The Inconvenient Truth of Modern Civilization’s Inevitable Collapse

19 Tuesday Feb 2019

Posted by xraymike79 in Climate Change, Ecological Overshoot, Environmental Degradation, Peak Oil, Pollution

Tags

"Renewable" Energies, 6th Mass Extinction, Abrupt Climate Change, Alternative Energy, Antarctic Ice Melt, Climate Change Denial, Climate Tipping Points, David Buckel, Donald Trump, Douglas Theobald, Ecocide, Food Shocks, Fossil Fuel Industry, Greenland Ice Sheet Melt, Lee Kump, Loss of Biodiversity, Micro-Plastic Pollution, Nate Hagens, Omnicide, Overpopulation, Permian-Triassic Mass Extinction, Runaway Climate Change, The Anthropocene Age, The Great Dying

“My early death by fossil fuel reflects what we are doing to ourselves.”
~ David Buckel

Today’s global consumption of fossil fuels now stands at roughly five times what it was in the 1950s, and one-and-half times that of the 1980s when the science of global warming had already been confirmed and accepted by governments with the implication that there was an urgent need to act. Tomes of scientific studies have been logged in the last several decades documenting the deteriorating biospheric health, yet nothing substantive has been done to curtail it. More CO2 has been emitted since the inception of the UN Climate Change Convention in 1992 than in all previous human history. CO2 emissions are 55% higher today than in 1990. Despite 20 international conferences on fossil fuel use reduction and an international treaty that entered into force in 1994, manmade greenhouse gases have risen inexorably. If it has not dawned on you by now, our economic and political systems are ill-equipped to deal with this existential threat. Existing international agreements are toothless because they have no verification or enforcement and do not require anything remotely close to what is needed to avoid catastrophe. The 20 warmest years on record have been in the past 22 years, with the top four in the past four years, according to the World Meteorological Organization (WMO). Ice loss from Antarctica has sextupled since the 1970s and Greenland’s pace of ice loss has increased fourfold since 2003. The Arctic ocean has lost 95% of its old ice and total volume of ice in September, the lowest ice month of the year, has declined by 78% between 1979 and 2012. With grim implications for the future, Earth’s air conditioner —the cryosphere— is melting away.

An article from a few months ago lays bare the reality that throughout the past two hundred years and with recent “alternative” or “renewable” energy sources, humans have only added to the total energy they consume without ever having displaced the old, polluting ones. An alternative energy outlook report by Wood Mackenzie foresees that even in a carbon-constrained future, fossil fuels would still make up 77% of global energy consumption in 2040. The world economy remains hopelessly tethered to fossil fuels. We are kidding ourselves if we think there will be any sort of orderly transition to sustainability with which modern civilization appears to be wholly incompatible. We are, as Nate Hagens says, energy blind.

Modern civilization has become so intertwined with petroleum-based products that their remnants are now found in our excrement. It seems no living thing can escape microplastics, not even the eggs of remote Arctic birds. This should come as no surprise if you look at the scale of the problem. Plastic production has grown from 2 million metric tons in 1950 to roughly 400 million metric tons today(more than 99% of plastics made today are with fossil fuels and only a tiny fraction of it recycled). There are five massive oceanic gyres filled with pelagic plastics, chemical sludge and other human detritus; one of the these gyres, named the Great Pacific Garbage Patch, is three times the size of France and growing exponentially. The health and environmental effects are grim; organized society may not even be around to examine the long-term effects of these persistent synthetic materials:

“Health problems associated with plastics throughout the lifecycle includes numerous forms of cancers, diabetes, several organ malfunctions, impact on eyes, skin and other sensory organs, birth defects” and many other impacts, said David Azoulay, a report author and managing attorney at the Center for International Environmental Law…”And those are only the human health costs, they do not mention impacts on climate, impacts on fisheries or farmland productivity.”

Making things more efficient and convenient has its limits, but humans keep trying to beat the consequences of Earth’s dwindling natural resources while ignoring the environmental costs. Jevons paradox be damned! To make matters worse, the fossil fuel industry has employed a well-financed and highly effective global disinformation campaign to confuse and sow doubt in the public mind about the reality of climate change. And to top it all off, we have a leader who reinforces the ignorance of climate change deniers:

It’s a cruel irony that this President’s emergency declaration for building a border wall comes at a time when migration from Latin America is near a 40-year low and the majority of those now seeking asylum are families fleeing climate change-related disasters. This President and the craven politicians who line up behind him are an abomination! At a time when compassion, cooperation, and scientific reasoning are needed to deal with the multiple crises we face, politicians are instead conjuring up xenophobia, racism, and conspiracy theories. As inequality grows and the once-stable climate continues to unravel, expect the super-rich to barricade themselves behind heavily fortified mansions while treating climate refugees and the most vulnerable among us with extreme prejudice. A new study shows increasingly severe weather events are fueling the number of ‘food shocks’ around the world and jeopardizing global security:

These “food shocks” —or, sudden losses to food production— are hitting local communities hard, in addition to impacting the global economy, with long-term implications. “Critically, shock frequency has increased through time on land and sea at a global scale,” the study notes. “Geopolitical and extreme-weather events were the main shock drivers identified, but with considerable differences across sectors.”

Douglas Theobald, in his study at Brandeis University, calculated that there is less than a 1 in 10^2,860 chance that all life did not arise from a common ancestor. In other words, humans are related to all life on Earth and share much of their DNA with other organisms. Despite earning the title of ‘superpredator‘, humans are dependent on intact and functioning ecosystems. Our chances for long-term survival are ultimately tied to the health of the planet, yet we are carrying out ecocide on a planetary scale. Being a mere 0.01% of all life on Earth, humans have managed to destroy 50% of wild animals in just the last fifty years and 83% since the dawn of civilization around 3,000 B.C.. Who knows how many plant species have gone extinct:

Hawaii is losing plant species at the rate of one per year, when it should be roughly one every 10,000 years. “We have a term called ‘plant-blindness’… People simply don’t see them; they view greenery as an indistinguishable mass, rather than as thousands of genetically separate and fragile individuals…”

The bedrock of our food, clean water and energy is biodiversity, but its loss now rivals the impacts of climate change. Without biodiversity, our food sources, both plants and animals, will succumb to diseases. Microbes and hundreds of different life forms interact to make soils fertile. Without them, soils will be barren and unable to support life. Monocultures can only be held together through artificial means(fossil fuels, inorganic fertilizer and toxic pesticides) and are highly vulnerable to diseases, yet industrial monoculture farming continues to dominate the globe. Most Worrisome are the recent studies indicating that biodiversity loss raises the risk of ‘extinction cascades’. Insect numbers, the base of the terrestrial food chain, are in steep decline and starfish, a common keystone species in coastal ecosystems, are facing extinction due to some sort of wasting disease likely caused by climate change:

“Many of these outbreaks are heat sensitive. In the lab, sea stars got sick sooner and died faster in warmer water… A warming ocean could increase the impact of infectious diseases like this one…We could be watching the extinction of what was a common species just 5 years ago.”

And here is Professor Stephen Williams discussing the recent mass death of Australia’s flying fox bats in which 30,000 —a third of their remaining population— died in a single extreme heat wave:

“A lot of tropical species are much closer to the edge of the tolerances, so they very much are the ‘canary in the coalmine’ for the world in what’s going to start happening with climate change…The fact that we’re now seeing things endangered occur in places that you would’ve thought to be pretty secure, that’s the scary bit…I suspect the next wave of extinctions is going to be mostly due to extreme events — extreme climate events like heatwaves.”

These disturbing headlines indicate to me that the Sixth Mass Extinction is gathering pace and the real stock market underlying our very existence and survival is crashing before our eyes!!! Four of the last five mass extinction events were preceded by a disruption of the carbon cycle. When renowned paleoclimatologist Lee Kump was asked whether comparisons to today’s global warming and that of past mass extinctions are really appropriate, he ominously said, “Well, the rate at which we’re injecting CO2 into the atmosphere today, according to our best estimates, is ten times faster than it was during the End-Permian. And rates matter. So today we’re creating a very difficult environment for life to adapt, and we’re imposing that change maybe ten times faster than the worst events in Earth’s history.” Humans are recreating the past extinction known as The Great Dying at a much faster pace and at many more human-forced levels that leave no ecosystem on Earth intact.

By orders of magnitude, the human endeavor has grown much too large for the Earth to support; climate change, plastic pollution, and biodiversity loss are just a few of the symptoms of this global ecological overshoot. The people who have studied this problem for years and from every angle have come to the same conclusion —technology simply won’t save us, but that won’t stop humans from experimenting. By far the most effective way to reduce future emissions and resource consumption is to reduce human birth rates, yet the global population is still increasing at about 90 million people per year despite the geographic shift in fertility rates.

Humans recognized decades ago the threats they are now facing, yet nothing was done due to political inaction and industry malfeasance which continues to this very day. The scientists who wrote The Limits to Growth decades ago were expecting our political institutions to take action back in the 1970s, but they were met with ridicule and now we stand at the doorstep of modern civilization’s collapse. Political inaction and regulatory capture by the fossil fuel industry appear to be intractable barriers that have condemned the human race to a hellish future. Anyone waiting for some sort of seminal climate change event that is going to galvanize the world’s leaders into action will be tragically disappointed. If seeing the world’s coral reefs dying, its glaciers disappearing, permafrost melting, and the steady uptick in extreme weather and wildfire events does not spur them to action, it is much too late to hope that any single event will ever do so. The time to act would have been before we were seeing all these environmental degradations and tipping points, not afterward. There is no way to put the CO2 genie back in the bottle. The Earth cannot even begin to reach a new climate state until humans stop emitting the roughly 40 to 50 gigatonnes of CO2 per annum and stop altering and destroying global ecosystems. This fact is our daily nightmare.

A myth that many uninformed people hold is that biospheric health will quickly bounce back after we humans get our act together. Nothing could be further from the truth. Much of the damage we are already seeing is irreversible on human time scales. Positive feedbacks were already occurring at less than 1°C of warming. Many carbon sinks are on the verge of becoming or have already become carbon sources. As we race toward a nightmarish future with no realistic way to stop, we leave behind a “forever legacy” that will haunt mankind for the rest of eternity.

Some Fun Facts for a Dystopic Future

02 Wednesday Nov 2016

Posted by xraymike79 in Capitalism, Climate Change, Corporate State, Ecological Overshoot, Environmental Degradation, Peak Oil, Pollution

≈ 62 Comments

Tags

6th Mass Extinction, Abrupt Climate Change, Antarctic Ice Melt, Arctic Blue Ocean Event, Arctic Sea Ice Melt, Capitalism, Donald Trump, Dr. James Orbinski, Geoengineering, Greenland Ice Sheet Melt, Hillary Clinton, James Hansen, Mass Coral Bleaching, Overpopulation, Planetary Boundaries, Professor Harold R. Wanless, Sea Level Rise, Techno-Fix, The Great Barrier Reef, The Limits to Growth

“When you cannot feed your children, you will do anything, even if it means going to war. This is the reality of climate change.” ~ Dr. James Orbinski

80% of the world’s productive agricultural land is in river deltas which are vulnerable to flooding from storm and tidal surges as well as salt penetration inland –as much as 20 km in some cases. Just 1 meter(3.28ft) of sea level rise(SLR) would threaten one third of this food-producing land and render nearly all the barrier islands of the world uninhabitable. (Overly-)Conservative estimates from the IPCC in 2013 predicted 1m of SLR rise by 2100, but the last two decades have seen global sea level increase more than twice as fast as it did in the 20th Century and only recently have scientists realized the true rate of SLR has been grossly underestimated(here and here). James Hansen (et al) has argued all along that 5 meters of sea level rise by the end of the century is possible, taking decades to happen rather than centuries. They conclude that glaciers in Greenland and Antarctica will melt 10 times faster than previous consensus estimates. The last time CO2 levels were at 400ppm was during the Pliocene Era when sea level was 5 to 40m higher (16-131ft); unfortunately, Earth is warming 50 times faster than when it comes out of an ice age. Professor Harold R. Wanless who has studied the geologic sedimentary record says that we are in for a nasty surprise within this century:

Most of the models projecting future sea level rise assume a gradual acceleration of sea level rise through this century and beyond as ice melt gradually accelerates. Our knowledge of how sea level rose out of the past ice age paints a very different picture of sea level response to climate change. At the depth of the last ice age, about 18,000 years ago, sea level was some 420 feet below present level as ice was taken up by large continental ice sheets. Subsequent ice melt was not a gradual acceleration and then deceleration process. Rather it was a series of very rapid pulses of sea level rise followed by pauses. These rapid pulses of rise, from three to thirty feet, were fast enough to leave drowned reefs, sandy barrier islands, tidal inlet deltas, and other coastal deposits abandoned across the continental shelf. That is what happens when climate change warms enough to destabilize some ice sheet sector. It rapidly disintegrates, resulting in a rapid rise.

We are already witnessing the demise of the Great Barrier Reef, the oldest and largest living organism on the planet, which continues to suffer the lethal effects of a warming and acidifying ocean. We’ve destroyed the planet’s air conditioner in the Arctic and set the stage for an impending Blue Ocean Event where 24 hours a day of summer sunlight penetrating the uncovered dark Arctic waters will create another tipping point for runaway climate change. The Arctic climate is changing so fast science can barely keep track of what’s happening or predict global consequences. On top of this, nature’s carbon sinks have been severely weakened over the last few centuries, hindering the ability of the planet to absorb ever-increasing greenhouse gases. And these things are happening before a large destructive pulse of SLR hits the planet.

History has proven considerably worse than the Club of Rome’s projections. The original report made only passing reference to some of the most critical environmental problems of today. In response to this, the Stockholm Resilience Centre identified a set of nine ecological processes regulating land/ocean/atmosphere and their accompanying boundaries within which humans must stay to avoid biospheric collapse. In 2015, researchers found that four of these planetary boundaries had already been breached: biodiversity loss, damage to phosphorous and nitrogen cycles, climate change and land use. None of these critical boundaries were picked up by the original Limits to Growth report. We have destroyed the stability of the Holocene Epoch and continue to wreak havoc with every passing day. In other words, there are many other environmental crises too numerous to list that are coming to a head, and catastrophic sea level rise is just the icing on the burned cake. The last time Earth had such a disruptive species, cyanobacteria altered the atmosphere and killed off all the anaerobic life forms including itself. Ironically, oxygen was the byproduct of the cyanobacteria that proved lethal to those ancient lifeforms and paved the way for the rise of photosynthetic organisms. The cyanobacteria had a 500 million year run, but modern man has only been around for 0.01% of that time. Our large brain has made it possible for us to destroy ourselves in record time.

Global warming is happening 5,000 times faster than a major food source can adapt. As the global monoculture food system breaks down and leaves vulnerable Third World countries to fend for themselves, I expect the last remaining vertebrates to be hunted to extinction in short order while wealthy nations carry out land grabs in an effort to keep their citizens fed. Humans are pushing all other life off the planet; the ‘Sixth Mass Extinction’ is not a metaphor.

So you would think that these stark facts laid out before us would be causing panic in the global markets and seats of power around the world because, clearly, no one is safe from this unfolding apocalypse. In what many call the ‘most powerful nation on Earth’, surely a leader must be on the verge of taking the helm of this sinking ship. In any rational world, they would be compelled to battle this planetary emergency with the war-time urgency it demands. In the election year of 2016 there are only two prospects in our corporatocracy, one of whom is so frightening that hundreds of the world’s scientists felt compelled to issue a warning against his possible election. The other candidate seems much more palatable on the surface, but her record and recent emails illustrate just how tortured her positions are on environmental issues. Anyone who has studied the numerous practices that make modern civilization truly unsustainable, the depths of corruption and waste in its global socio-economic system, and how predatory one has to be in order to survive and “succeed’ in it realizes in the end that it wouldn’t matter much who fills that figurehead position. Toeing the line of the dominant culture is a prerequisite for the job. That’s one reason why nations are building walls in response to climate change refugees and putting faith in unproven and unrealistic techno-fixes to save themselves while at the same time drilling for new oil, financing new coal plants, allowing climate goals for corporations to add up to only a quarter of the amount needed to limit warming to 2°C, and giving the shipping industry a pass on curbing its emissions(if shipping was a country it would be the world’s 8th biggest carbon polluter).

Meanwhile, CO2 levels continue to climb at breakneck speed and recent paleoclimate research indicates today’s greenhouse gas levels could produce a ‘game over’ warming of 7°C within our lifetime. We already have no carbon budget left for a 1.5°C warming limit from 2017 onwards. We’re betting our species’ future on vaporware, and no country on Earth is taking the 2°C climate target seriously. Celebrity breakups get more attention than real threats to the continuation of our species. Apocalypse tourism has become a ‘thing’.

The biosphere is collapsing under the weight of 7.5 billion people living off the combustion of a one time endowment of ancient carbon energy, from the factory-farmed produce they eat to the petroleum-based medical supplies that keep them alive. And global population growth may be accelerating at an even greater rate than recent predictions. As Germany has shown, “renewable energies” are nothing more than ‘fossil fuel extenders’ still wedded to fossil-fueled extraction processes for the production and maintenance of those technologies. It’s a shell game of sorts. Industrialized countries will say their carbon footprint has gone down without telling you they’ve moved their dirty industrial operations to Third World countries. Developing countries will make promises of “green growth” while their state-owned banks and companies expand fossil fuel production overseas. We’ve been fooling ourselves for a very long time about what is truly sustainable and will continue to do so as the system falls apart, geoengineering fixes are applied, interstellar space colonization fantasies are dreamed up, and wars are fought for what remains. Humans have constructed a reality incompatible with the well-being of the natural world and the stability of the biosphere, but we won’t be able to escape the rules of physics, chemistry, and biology. We’ve spent generations making the bed we’re going to be lying in, never realizing it’s also our death bed. Time is not on our side.

Most are not listening and our leaders are misleading, so it bears repeating: ‘The Oil Age’ made us all confident idiots with short attention spans. To both candidates: runaway, catastrophic climate change resulting in loss of habitat and mass starvation is our biggest threat.

Update 11-10-2016:

The proles have now elected a man who has put a climate science denier in charge of his EPA team, vowed to kill the Paris climate deal, end all efforts to help other countries deal with climate change, stop domestic climate action, reinvigorate coal, and zero out all climate science research & clean energy, but physics doesn’t really care who was elected.

Catastrophic Sea Level Rise within Three Generations

07 Tuesday Apr 2015

Posted by xraymike79 in Capitalism, Climate Change, Ecological Overshoot, Environmental Degradation

≈ 109 Comments

Tags

Antarctic Ice Melt, Climate Change, Collapse of Industrial Civilization, Doubling Time, Environmental Collapse, Exponential Growth, Freshwater Pulses, Greenland Ice Sheet Melt, IPCC, James Hansen, Nickolay Lamm, Nuclear Meltdown, Ocean Dead Zones, Oceanic Anoxic Events, Paul Beckwith, Salt Water Intrusion, Sea Level Rise, Warm Water Upwelling

What makes exponential growth so deceptive is that, no matter the growth rate, things always starts out with a period of slow growth, but then quickly change over to a rapid buildup with a characteristic doubling time. Before you know it, you are overrun with rodents, overwhelmed by bacteria, and surrounded by urban sprawl. As Albert Bartlett exclaimed, “The greatest shortcoming of the human race is our inability to understand the exponential function.” And so it goes with the effects of anthropogenic climate change. Within a few generations we will find ourselves inundated by rising oceans at the same time that surging temperatures are making large swaths of the planet uninhabitable. Various positive feedbacks are amplifying the exponential rate of ice melt, rendering useless the IPCC’s linear-model forecasting of global sea level rise(SLR). Upwelling of warm ocean waters are melting both polar regions from the bottom up, and the resulting large freshwater pulses are already slowing down ocean currents. The oceans are losing oxygen. Reflective Arctic sea ice is fast disappearing and a blue ocean event is just around the corner. Melting polar and glacial ice and thermally expanding ocean water have accelerated SLR to the highest rate in at least 6000 years, and an estimated 69 feet SLR has already been set into motion.

From recent satellite data and scientific studies, SLR appears to be in the beginning phase of an exponential growth pattern that will decimate thousands of coastal cities by 2070. Last year we learned that the ice mass loss rate from both Greenland and Antarctica has more than doubled in the past 5 years. Ominously, the West Antarctic ice sheet has been found to be less stable than originally thought. Warming ocean waters are infiltrating beneath the ice shelves and irreversibly melting West Antarctica from below. And more recently we learned that the stability of East Antarctica is being undermined in the same insidious way. In fact, Antarctic ice shelves have been thinning up to 70% faster than average in some spots. These ice shelves extend out over the polar waters and are what hold back and support all the land-based glacial ice. Once the ice shelves are eroded, land ice will have an open path to slide down into the ocean and melt, greatly accelerating SLR. Congruent with these disturbing trends is the revelation that SLR has been increasing much faster than we thought in the last couple decades. The rate of change per year has been 3.2mm since 1990 versus 1 to 1.4mm for the previous nine decades. That is a 100% to 200% increase in just the last couple decades. Adding to SLR is the frenzied pumping of groundwater by drought-stricken farmers and municipalities. In a cruel twist, SLR will only worsen fresh water scarcity by causing inland salt water intrusion, raising the fresh water table, and altering freshwater streamflow. SLR will reshape geography, changing coastal estuaries, wetlands, and forests. Radically altering such natural topographical features will inevitably change rainfall patterns. Permanent and intermittent flooding will allow for the expansion of tropical diseases such as cholera and malaria, and more frequent and intense hurricanes and monsoons will increase the number of cases and duration of exposure to pathogens and diseases.

Dr. James Hansen has argued all along that 5 meters of sea level rise by the end of the century is possible, saying:

“…IPCC treats sea level change basically as a linear process. It is more realistic, I believe, that ice sheet disintegration will be non-linear, which is typical of a system that can collapse.”

Hansen had posited a doubling time of ten years for land ice melt rates, but satellite data has revealed a doubling time that is occurring twice as fast. This would put those measurements more in line with the projections of physicist/climatologist Paul Beckwith who calculates we may be on track for a 7 meter(23 feet) SLR by 2070 if the doubling period of ice cap melt from both Greenland and Antarctica hold up over this century. Paul tells me that the recent developments described above support his views. Interestingly, there was a study published in 2013 that stated an eventual 23 foot SLR would be locked-in by the end of the century under BAU emissions based on best estimates of global temperature sensitivity to pollution and the finding that every degree Fahrenheit of global warming results in a global average long-term SLR of 4.2 feet. That study, however, did not take into account the exponential rate of ice melt now occurring.

What will 23 feet SLR look like? For some fairly accurate visuals, take a look at Nickolay Lamm’s work. In the U.S. alone, 1500 communities would be underwater at high tide. With its porous limestone substrate, South Florida would be completely lost:

Most nuclear plants are located along waterways for easy access to water for coolant purposes, making them vulnerable to storm surge flooding in a world of expanding oceans. Since decommissioning a nuclear power station is a long, expensive, and dangerous process, I can’t imagine we will have the time, money, or forethought to safely get rid of all these time bombs before most of them are swallowed up by the ocean and go Fukushima on the world. In addition, melting ice sheets and SLR can set off the most destructive of earthquakes and volcanoes. The toxic wreckage left behind by capitalist industrial civilization will linger around for millennia to haunt anyone who does manage to survive in this hellish future.

The year is now 2015 and the human population is still shooting skyward as if there is some sort of bright techno-utopian future on the horizon, the high priests of capitalism are still praising endless growth, fossil fuels are still the predominant energy source on the planet, and the masses still can’t get enough of celebrity gossip. No need to worry about the future. I’m sure if there’s a buck to be made by holding back the rising tides, we can count on some capitalist lurking in the shadows to fix the problem. Sea walls will do the trick, right? Humans are looking more and more like ants on a floating turd: “When the log turns over we will all be dead…”

Update May 8, 2015:

A new study shows another ominous jump in the rate of growth in SLR. Robert Scribbler blogs about the staggering 30% increase here:

…new findings paint an even starker picture. For a recent study, headed by Shuang Yi and published on April 30 in Geophysical Research Letters provides evidence that, since 2010, annual rates of global sea level rise have shown a strong uptick. The study, entitled An Increase in the Rate of Global Mean Sea Level Rise Since 2010, notes:

The global mean sea level (GMSL) was reported to have dropped 5 mm due to the 2010/11 La Niña and have recovered in one year. With longer observations, it is shown that the GMSL went further up to a total amount of 11.6 mm by the end of 2012, excluding the 3.0 mm/yr background trend. A reconciled sea level budget, based on observations by Argo project, altimeter and gravity satellites, reveals that the true GMSL rise has been masked by ENSO-related fluctuations and its rate has increased since 2010. After extracting the influence of land water storage, it is shown that the GMSL have been rising at a rate of 4.4 ± 0.5 mm/yr for more than three years, due to an increase in the rate of both land ice loss and steric change.

In short, the study finds an average rate of sea level rise of 4.4 mm per year, or 30% faster than the annual rate from 1992 to 2009, during the period of 2010 to 2013. For these, more rapidly rising, sea levels the study identifies clear causes. The first is an increasing rate of land ice loss. The second is what is termed as ‘steric change’ — a scientific phrase that both identifies ocean thermal expansion due to warming combined with changes in ocean salinity, which also impacts sea surface height.

I emailed this recent finding to Paul Beckwith and here’s what he had to say:

Update July 10, 2015:

The big story this week:

This post appears to becoming reality.

Update July 20,2015:

Update July 23, 2015:

James Hansen’s controversial sea level rise paper has now been published online

Update December 31, 2015:

Update January 1, 2016:

The Coming Reality of Sea Level Rise: Too Fast Too Soon

Update January 7, 2016:

Update January 11, 2016:

SLR has risen 8cm since 1992 and jumped by 1cm just in the last year:

Looking back over the last century, we see what looks like the beginnings of an exponential rise in recent times:

We already have 20 to 75 feet of SLR locked in. It’s just a matter of how fast it will happen and you can bet that it won’t be a gradual, linear rise. If you follow the news, glaciologists always seem to be amazed that things are happening much faster than expected. Here are a couple recent headlines:

Greenland’s Undercut Glaciers Melting Faster than Thought

GREENLAND’S MELTING ICE IS RUNNING OFF FASTER THAN WE THOUGHT

Government estimates of SLR over this century do not take into account rapid melt of polar ice sheets:

…Most of the models projecting future sea level rise assume a gradual acceleration of sea level rise through this century and beyond as ice melt gradually accelerates. Our knowledge of how sea level rose out of the past ice age paints a very different picture of sea level response to climate change. At the depth of the last ice age, about 18,000 years ago, sea level was some 420 feet below present level as ice was taken up by large continental ice sheets. Subsequent ice melt was not a gradual acceleration and then deceleration process. Rather it was a series of very rapid pulses of sea level rise followed by pauses. These rapid pulses of rise, from three to thirty feet, were fast enough to leave drowned reefs, sandy barrier islands, tidal inlet deltas, and other coastal deposits abandoned across the continental shelf. That is what happens when climate change warms enough to destabilize some ice sheet sector. It rapidly disintegrates, resulting in a rapid rise.

We have significantly warmed atmospheric climate and that is resulting in an accelerated ice melt of the surface of the Greenland Ice Sheet. Much of the surface of the Ice Sheet is darkening as the dust and black carbon in the ice concentrates on the melting surface. This accelerates heat adsorption further accelerating surface ice melt.

More importantly, warmed ocean water is accelerating ice melt in both polar regions. The warming North Atlantic Ocean and Arctic Ocean have been accelerating ice melt all around Greenland since about 1995 as this dense, ‘warm’ ocean water enters the deep outlet glacial fjords that penetrate far in under the Ice Sheet. ‘Warm’ water from upwelling because of increased wind shear around Antarctica is also penetrating in under outlet glaciers to the West Antarctic and East Antarctic Ice Sheets. Each of these ‘warm’ waters are only 2-4 degrees Celsius, but are doing a powerful amount of warming, and we are creating a basically unlimited supply of warmth to the oceans.

The beginnings of polar Ice Sheet melt are showing positive reinforcing feedbacks which are rapidly accelerating the rate of melt far beyond anything originally anticipated. Water on the melting ice surface adsorbs more heat accelerating surface melt; melt water percolating down through the ice lubricates the base permitting faster motion, which results in more extensive fracturing. Water percolating through the fractured ice accelerates ice melt and warms the ice resulting in softening of the ice and further acceleration. And so on. With the rapid melting of the Arctic Ocean pack ice and warming of the Arctic Ocean, release of additional carbon dioxide and methane from decaying organics in the melted permafrost and melting of methane hydrates on the Arctic continental shelf, this melt is accelerating and seems irreversible. We are most certainly witnessing the onset of a rapid pulse of sea level rise…

http://www.bio.miami.edu/arboretum/wanless.pdf

Storm surges will become exponentially more damaging as sea levels rise. Global warming will amplify and increase the frequency of super El Niños and anomalies like the “Blob”. This year’s record storms will be the new normal in coming years. If you live in Florida(aka the new Atlantis), sell your home while you can.

Update January 30, 2016:

Update February 6, 2016:

Glaciologist Jason Box expects ice melt from the West Antarctic to become the biggest contributor to sea level rise in the coming decades due to a feedback loop not in the climate models…

Nonlinear factors will likely bring unpleasant surprises.

Update February 10, 2016:

Update February 22, 2016:

Update February 24, 2016:

Update March 8, 2016:

Update March 14, 2016:

It appears that, unless societies make significant changes, we will see approximately 3 feet of sea level rise by 2100. That may not sound like a lot, but it’s enough to cause enormous economic and societal problems. What’s great about this paper is they also include a discussion on the limitations of their work. For instance, they state that their method cannot deal with processes that are independent of the warming rate (such as a sudden collapse of an ice sheet).

Update March 26, 2016:

Update March 31, 2016:

Nothing Hides Under the Sun

31 Wednesday Jul 2013

Posted by xraymike79 in Climate Change, Corporate State, Environmental Degradation, Pollution

≈ 204 Comments

Tags

Addiction to Fossil Fuels, Antarctic Ice Melt, Climate Change, Collapse of Industrial Civilization, Corporate State, Eco-Apocalypse, Environmental Collapse, Extinction of Man, Gas Flaring, Greenland Ice Sheet Melt, Inverted Totalitarianism, Mass Die Off, Mega-Fires, Methane Clathrate Gun, Runaway Climate Change

In keeping with what I said earlier, I’m taking a break for a couple weeks from in-depth blogging, but until then I will post or reblog articles that happen to catch my eye.

Has mankind triggered the trip switch for his own extinction? Looking at just the headlines below and the comment from the Chemist, I would say the answer is a resounding “Yes!” This conclusion brings me no pleasure, but immeasurable depths of angst and depression. The so-called “doomers” are perhaps the most humanistic amongst the population. They see things as they are, not what people hope them to be or what many idealize industrial civilization to be. Nothing hides under the Sun.

and

and finally…

…with the following noteworthy comment:

Runaway Climate Change in the Arctic is Just The Beginning

21 Tuesday May 2013

Posted by xraymike79 in Climate Change, Environmental Degradation, Pollution

≈ 45 Comments

Tags

Aerosol Effect, Arctic Ice, Climate Change, Climate Feedback Loops, Climate Tipping Points, Collapse of Industrial Civilization, David Wasdell, Environmental Collapse, Envisionation, Global Dimming, Global Famine, Greenland Ice Sheet Melt, Methane Release from Thawing Permafrost, Release of Ocean Methane Hydrates, Runaway Climate Change, The Apollo-Gaia Project, West Antarctic Ice Sheet Melt

An astute reader has directed me to a couple of brilliant, just-released videos done by David Wasdell (produced by Envisionation) which bring into focus the rapid changes that are occurring in the Arctic and what the horrific implications are for the rest of the planet. I have watched both videos and posted an abbreviated version of them below. The original transcript of the two videos is here. We can see that even the worse case scenarios plotted by mainstream climate models have grossly underestimated what is happening in the Arctic. As Mr. Wasdell states, “The Arctic… is the fastest moving response to global warming and climate change anywhere on the planet.”

One of the reasons for the Arctic’s rapid temperature increase is that it is not being shielded by industrial pollutants that once came from the Northern Hemisphere. The aerosol effect is now coming primarily from the burning of poor quality coal in Asia(China and India). From roughly 1940 to 1980 there was a massive increase in power production during the Great Acceleration of the West. Remember the acid rain and smog from the 50’s and 60’s? In 1970, the U.S. Congress imposed acid emission regulations through the Clean Air Act which was strengthened two decades later in 1990. Sulfate and nitrate levels in precipitation decreased by some 40 percent since that time. This lifted the manmade protective aerosol shield, also called “global dimming”. Temperatures then started to rise again, but have leveled off since 1997 due to the recent industrialization of China and India, the effect of which has been to artificially cool down global temperature once more.

The effects of global dimming have been enhanced during this period [Asian Industrialization] by the mixing of more surface heat down to deeper ocean water, by the dominance of La Nina (cooler) conditions in the Pacific, and by a prolonged period of minimal solar radiation. The absence of temperature increase has also blocked all amplification from the temperature-dependent feedback mechanisms.

All of these eras(The Great Acceleration, The Clean Air Act, and Asia’s Industrialization) and their effect on global temperature are shown in the chart below:

Climate-change deniers are of course crowing and saying “Although carbon dioxide concentrations have gone on increasing, and emissions are running at a higher rate than when temperature was still rising, temperature has not changed. So obviously it is independent of carbon dioxide. So we can forget all about climate change and continue to use fossil energy without any worry about contributing to global warming!” That is a complete and utter myth!

Remember what happened after the Second World War? The same thing is happening today.

So what happens when Asia, specifically China, cleans up and improves its air quality? Global temperatures will rise again.

The Arctic Meltdown

Free from the effects of global dimming that heavy post WW II industrial activity produced in the northern hemisphere, the Arctic air is relatively clean, as compared to the rest of the world right now. The greenhouse effect from CO2 is therefore allowed to occur uninhibited at a much faster rate, setting off numerous positive feedback loops:

– increased Arctic temperature raises water-vapor concentration which in turn elevates the heating

– floating ice and land-based ice begin to melt and more sea and land surface is exposed to the sun’s rays, inducing further ice melt from the diminishing Arctic albedo effect

– the sea heats up from the disintegration of floating ice and the land heats up from diminishing ice cover

Hyper-exponential Increase of Temperature in the Arctic Area

The worst-case prediction by current climate models of an ice-free Arctic by about 2075 are way off mark because they employ crude linear extrapolations that do not account for complex, self-reinforcing feedback loops. the Arctic will actually experience its first occurrence of zero ice area at the end of September 2015 according to Wasdell’s studies.

Through the use of submarine-based sonar measurements and satellite data, a PIOMASS graph of yearly minimum Arctic ice volume or mass has been constructed which also shows the first occurrence of no floating Arctic sea-ice in 2015.

Another graph, known on the internet as the Arctic Death Spiral, shows the collapse in the total volume of Arctic ice measured in thousands of cubic kilometers. The center of the graph is zero and the values increase up to 30km³ as you move out from the center. Each year is represented from 1979 up to 2013 in a clockwise orientation. Each month of the year has its own color and is plotted in a clockwise fashion as well. Being the month with the least amount of ice cover, September is the innermost line represented by the color black.

You can see that September ice volume plunged from 7km³in 2009 down to 3.3km³in 2012. Indeed all months of each successive year are pulling downwards towards the center of zero ice volume. According to these calculations of total ice volume melt, the first year of an ice-free September moves up one year earlier to September 2014.

In the 1980’s, the mass of floating Arctic sea ice at the end of September was staying roughly stable. By the 1990’s it was losing about 4.5 thousand cubic kilometres per decade. In the 2000’s that moved up to about 7.8 thousand cubic kilometres per decade, while in the last three years the decadal rate has surged to around 13.8 thousand cubic kilometres. So we have another of these behaviours in which the smaller the mass becomes, the faster the rate of loss. The behaviour is not linear, it is represented by an exponential curve…

…And then there is one other thing to take into account:

Ice does not just melt and thin gradually to a wafer as would be implied in these projections. When it reduces to about 45 centimetres thick it begins to break up under the impact of waves and tides and storms. The result is a lot of brash, smaller broken pieces of ice. Now broken ice of this nature melts very much faster because warmer water and warmer air and solar energy can get round to its exposed surfaces. The melt-rate increases dramatically. These curves that we have been exploring take no account of this final break-up.

So, while we would expect the first occurrence of zero ice by the end of September 2014, there is a distinct possibility that under the impact of ice break-up (of which interestingly we were already seeing signs in March 2013) the Arctic Ocean could be ice free at the end of September in 2013.

Consequences and Implications

– Runaway Climate Change in the Arctic: The CO2 trigger has set off multiple factors such as the water-vapour feedback, the ice-albedo feedback and other positive feedback loops to exponentially accelerate ice loss in the Arctic as shown in the above graphs.

– Increasing Ice-Free Window: As mentioned earlier, September is the month with the least amount of ice and each successive year has seen a smaller and smaller volume of ice at that time. We are approaching the year when September will be ice-free, leaving the door open for the sun’s rays to heat up the ocean and further accelerate ice loss in the Arctic. This is like a burglar getting a foothold in a door that has been cracked open, allowing him to use his crowbar to fully pry open up the door that was once safely closed. An ice-free month of September that will soon open up in 2014 or 2015 will allow the sun’s solar energy to expand that ice-free window year after year after year.

– Accelerating Temperature: The expanding ice-free window described above will accelerate average temperatures upwards year after year after year, intensifying all feedback loops.

– Tundra Impact: Warmer Arctic temperatures flow over the land, melting tundra permafrost and releasing methane as well as activating bacteria which feed on exposed dead vegetation which in turn release even more CO2 and methane. The melting Tundra takes longer to refreeze in Autumn which further decreases snow cover. Melting Tundra releases warm waters which runs off into the northern seas, warming and desalinating shallow coastal surface waters.

– Methane Release: Wave energy, tidal behaviour and storm effects from a warming and increasingly ice-free Arctic are acting to disturb ancient methane deposits at the sea floor. These methane deposits are called “clathrates”, a combination of methane and ice crystals. The warmer the water gets, the more methane is allowed to reach the water’s surface and escape into the atmosphere. Fossil ice filled with ancient plant matter and detritus is also beginning to melt and release methane. The combination of Tundra methane and deep-sea methane escaping into the atmosphere further increases the greenhouse effect, enabling methane release to speed up and create an even more potent greenhouse effect. Thus another runaway feedback process has been activated.

– Melting Greenland Ice-Cap: The melting is accelerating and releasing water into the glacial cracks and down into the base of the ice sheet, enabling the calving of glaciers and discharge of icebergs into the sea.

…So the collapse of the ice-sheet could become exponential and could happen quite quickly. As that occurs, large quantities of cold fresh water are discharged into the North Atlantic and that can have significant effects on the drivers of the Gulf Stream, the thermohaline circulation. As that slows down (and we would expect it to under these conditions) then the heat that at presently comes via ocean currents to the north- western seaboard of Europe begins to decline. In a strange anomaly, the rate of change of temperature in north-west Europe will slow down as Arctic temperatures climb.

– Sea-Level Rise: The melting of the Greenland ice-cap would have catastrophic consequences for civilization and its large percentage of coastal urban centers. Up to about seven metres of global sea-level change could happen on a decadal basis. The West Antarctic ice field is also subject to melting and disintegration, although at a much slower pace than Greenland, which would act to raise sea levels even higher.

– Jet-Stream Behaviour: The energy of the Jet Stream is driven by the difference in temperature between the Arctic and the warm sub-tropical air of lower latitudes. As the Arctic warms and the temperature difference decreases, the jet stream around the North Pole begins to slow down and get sluggish or mangled. Colder northern air is being pulled south and warmer tropical air is being sucked up north to the Arctic, further warming the Arctic. This change in the jet stream causes “blocking patterns of extreme drought, extreme rain, extreme cold, extreme heat, and extreme unpredictability.”

And that is where the nub comes. With extreme unpredictability food production is disrupted in the bread-baskets of the northern hemisphere. We are talking about the corn and wheat-producing areas of North America and Europe, of Russia and the Ukraine, and across to the wheat and rice producing areas of northern China. We have already seen major loss of food production capacity in the northern hemisphere as a result of what has already taken place. Over the next few years that will accelerate significantly. There are economic issues; there are humanitarian issues; there are political issues that all stem from that instability. We are already seeing hedge funds and pension and other investment funds buying up future food in anticipation of future shortages and high prices that all stem from this phenomenon. That means it is going to be very difficult for the poorer countries of the world to buy food on the open market to enable their populations to survive. It will be even more difficult for the Aid agencies to buy up surplus food (which is in short supply and much more expensive) for distribution in conditions of humanitarian disaster. Because of the economic spin-off there will be financial destabilization in the wake of food shortages. That leads inevitably to political destabilization. So we have some really important issues to deal with that all stem from the implications of the phenomena we are now understanding in the terms of Arctic Dynamics.

– Impact on Global Dynamics: What we see in the Arctic – runaway climate change – could be in store for the rest of the planet which, at the moment, is still in stasis. Once the “aerosol effect” or “global dimming” of industrial pollution is removed, we will see further temperature increases. Other positive feedback loops which are specific to various regions of the world could come into play like they have in the Arctic.

The implications of jet-stream behaviour and Arctic dynamics could spin-off into our economics, into our food production, into abandonment of the poor, into the inability to sustain a population of 8, 9 or even 10 billion people, into our survival as a species. All this will inevitably follow unless we are able to intervene, to slow it down, to bring it to a halt and reverse it. Without that intervention, global dynamics hold a dark future for humanity and a dark future for the biosphere of which we are a part. It is time to take action, not only for the Arctic but for the whole global crisis in which we are all involved.

Permian Extinction Redux and an Update on Climate Tipping Points

05 Sunday May 2013

Posted by xraymike79 in Climate Change, Ecological Overshoot, Environmental Degradation, Pollution

≈ 14 Comments

Tags

Addiction to Fossil Fuels, Amazon Destruction, Anthropocentrism, Arctic Ice Melt, Bark Beetle Infestation, Boreal Forest Destruction, Climate Change, Climate Tipping Points, Collapse of Industrial Civilization, Eco-Apocalypse, Ecological Overshoot, Environmental Collapse, Extinction of Man, Global Die-Off of Forests, Greenland Ice Sheet Melt, Inverted Totalitarianism, Jay Hanson of DieOff.org, Mass Die Off, Methane Clathrate Gun, Methane Release from Thawing Permafrost, Runaway Climate Change, Sam Carana of Arctic-News.blogspot.com, The Atlantic Thermohaline Circulation (THC), The Indian Summer Monsoon, The Sahara and Sahel in Africa, The THOR Project, Under a Green Sky: Global Warming - the Mass Extinctions of the Past - and What They Can Tell Us About Our Future, West Antarctic Ice Sheet Melt

The extinction event which I talked about in ‘Free Markets, Corporate Profits and Mass Extinctions‘ looks by all unbiased scientific accounts to be happening again. Instead of volcanoes inducing climate change, today it is man’s industrial activities, specifically the burning of stored ancient sunlight, that is bringing about the end of the world as we know it. We will soon breach 400 ppm of atmospheric CO2 levels:

The ratio of carbon dioxide in Earth’s atmosphere is flirting with 400 parts per million, a level last seen about 2.5 million to 5 million years ago, according to the Scripps Institution of Oceanography at UC San Diego….

…The speed at which Earth’s atmosphere has reached that density of carbon dioxide, a known greenhouse gas, has scientists alarmed.

Scientists estimate that average temperatures during the Pliocene rose as much as 18 degrees Fahrenheit. Sea levels during that 2.8-million-year epoch ranged between 16-131 feet higher than current levels, according to Richard Norris, a Scripps geologist.

“I think it is likely that all these ecosystem changes could recur, even though the time scales for the Pliocene warmth are different than the present,” Norris said. Heating the ocean probably will cause sea level rises and change the Ph balance of the ocean, affecting a wide array of marine life, he said. “Our dumping of heat and CO₂ into the ocean is like making investments in a pollution bank,” he said…

Let’s go over and update the major tipping points again(covered earlier here and here) which are currently in play:

1.) Disintegration of the Arctic Ice Sheet:

2.) Disintegration of the Greenland Ice Sheet:

Jason Box speaks the language of Manhattans. Not the drink—the measuring unit.

As an expert on Greenland who has traveled 23 times to the massive, mile thick northern ice sheet, Box has shown an uncanny ability to predict major melts and breakoffs of Manhattan-sized ice chunks. A few years back, he foretold the release of a “4x Manhattans” piece of ice from Greenland’s Petermann Glacier, one so big that once afloat it was dubbed an “ice island.” In a scientific paper published in February of 2012, Box further predicted “100 % melt area over the ice sheet” within another decade of global warming. As it happened, the ice sheet’s surface almost completely melted just a month later in July—an event that, in Box’s words, “signals the beginning of the end for the ice sheet.”

Box, who will speak at next week’s Climate Desk Live briefing in Washington, D.C., pulls no punches when it comes to attributing all of this to humans and their fossil fuels. “Those who claim it’s all cycles just don’t understand that humans are driving the cycle right now, and for the foreseeable future,” he says. And the coastal consequences of allowing Greenland to continue its melting—and pour 23 feet’s worth of sea level into the ocean over the coming centuries—are just staggering. “If you’re the mayor of Hamburg, or Shanghai, or Philadelphia, I think it’s in your job description that you think forward a century,” says Box. “They’re completely inundated by the year 2200.”…

3.) Unleashing of Tundra methane clathrates and sub-sea methane deposits from (1) and (2):

Courtesy of the work by Sam Carana, the multitude of reinforcing feedback loops from the loss of the Arctic Ice Sheet are listed below:

Albedo feedback: Accelerated warming in the Arctic speeds up the decline of ice and snow cover, further accelerating albedo change.
Methane feedback: Methane releases in the Arctic further add to the acceleration of warming in the Arctic, further contributing to weaken Arctic methane stores and increasing the danger that methane releases will trigger runaway global warming.
Currents feedback: Sea ice loss can cause vertical sea currents to weaken, reducing the cooling effect they had on the seabed. This can thus further cause sediments to warm up that can contain huge amounts of methane in the form of free gas and hydrates.
Storms feedback: Increased frequency and intensity of storms can cause substantially more vertical mixing of the sea water column, causing more warming of the seabed, thus further contributing to the warming of sediments, as above.
Storms feedback: Accelerated warming in the Arctic can result in more storms, causing mixing of cold Arctic air with warmer air from outside the Arctic. The net result is a warmer Arctic.
Storms feedback: More open waters can result in more storms that can push the ice across the Arctic Ocean, and possibly all the way out of the Arctic Ocean.
Storms feedback: Storms also cause more waves that break up the sea ice. Smaller pieces of ice melt quicker than large pieces. A large flat and solid layer of ice is also less susceptible to wind than many lighter and smaller pieces of ice that will stand out above the water and capture the wind like the sails of yachts.
Storms feedback: Storms cause waters to become more wavy. Calm waters can reflect much sunlight back into space, acting as a mirror, especially when the sun shines under a low angle. Wavy waters, on the other hand, absorb more sunlight.
Fires feedback: More extreme weather comes with heatwaves and storms. Thus, this is in part another storms feedback. The combination of storms and fires can be deadly. Heatwaves can spark fires that, when fueled up by storms, turn into firestorms affecting huge areas and causing huge amounts of emissions. Storms can whip up particles that when deposited on ice, snow or the bare soil, can cause more sunlight to be absorbed.
Open doors feedback: Accelerated warming in the Arctic causes the polar vortex and jet stream to weaken, causing more extreme weather and making it easier for warm air to enter the Arctic.

4.) Disintegration of the West Antarctic Ice Sheet(covered here earlier):

Two papers released last week in the journal Nature Geoscience provide evidence that warming and melt in West Antarctica are occurring at levels that are highly unusual compared to natural variability.

The West Antarctic Ice Sheet contains about 2.2 million cubic kilometers of ice; enough to raise global sea levels by 3 to 4m. What’s making glaciologists nervous is that the ice rests on bedrock which is below sea level; this makes it vulnerable to attack from below by a warming ocean as well as attack from above by increasing air temperatures.

5.) Destruction of the Amazon Rain Forest, and indeed all forests of the planet:

As some of us were heading off for the Easter holiday weekend, the Brazilian government was quietly releasing deforestation trends showing an increase in deforestation for the first time in five years.

These numbers use the DETER rapid response satellite system, a system that provides estimates of deforestation rates every month. Over the time period documented, August 2012 to February 2013, the rates increased an estimated 26.82% and an area of the Amazon larger than the size of the city of London disappeared.

In absolute numbers, that means 1,695 square kilometers (654 square miles) of forest have disappeared. That equals an area the size of 237,000 soccer fields…

…The increase in deforestation rates can be directly attributed to the Brazilian government’s systematic dismantling of the laws and agencies that protect the Amazon…

…President Dilma Rousseff’s approval of a new Forest Code, a law that provides amnesty for crimes committed after 2008 in the Amazon and reduces large areas of protected land, paved the way for the increase in deforestation. The president also structurally weakened government agencies like IBAMA, the federal environmental enforcement agency, so unfortunately it won’t be a surprise if deforestation continues to rise in the Amazon…

6.) Die-Off of Boreal Forests:

After more than a decade, the mountain pine beetle epidemic that surged through British Columbia appears finally to be in remission. Having devastated the province’s lodgepole pine forests, the insect is running out of food.

But forest managers now see new beetle infestations appearing at the edge of the Boreal Forest, in Alberta, and in the Yukon and Northwest Territories — areas well outside the insect’s historical range. As a warming climate lifts the temperature limitations that once kept the beetle in check, scientists fear it may continue its push across the continent, perhaps as far as the Atlantic Coast…

…Without debating the causes of global climate change the effects of forest dieback can be viewed factually. The earth is warming and droughts are increasing in severity and magnitude. Temperature and drought are major contributing factors to forest dieback, so more trees will be dying in the future. As more carbon is released from dead trees, especially in the Amazon and Boreal Forests, more greenhouse gasses are released into the atmosphere. Increased levels of greenhouse gasses increase the temperature of the atmosphere. The negative feedback loop is reinforced and the biological adaptations of the species determine its survival. Projections for dieback vary, but the threat of global climate change only stands to increase the rate of dieback. The issue is complex and models are intricate, so scientists have serious work ahead of them.^[8]

Scientists do not know the tipping points of climate change and can only estimate the timescales. When a tipping point, the critical threshold, is reached a small change in human activity can have long-term consequences on the environment. Two of the nine tipping points for major climate changes forcast for the next century are directly related to forest diebacks. Scientists are worried that forest dieback in the Amazon^[9] rain forest and the Boreal^[10] evergreen forest will trigger a tipping point in the next 50 years.^[2]… – source

7.) The Sahara and Sahel in Africa

It is difficult to estimate the overall ability to increase food production, but a recent analysis suggests that human consumption may be approaching the limits of the net primary plant production (NPP) — that is, the maximum photosynthetic production that is possible on the planet.

It is “not whether humans will reach the global NPP boundary but when they will do so.” It seems probable that the developed countries will continue their excessively high levels of consumption. The emerging economies are likely to continue to eat more protein and a larger slice of grain production in countries with an appropriate climate for grain production will be diverted to feeding animals, or ethanol to drive automobiles. A child born in the Sahel today could belong to the first generation to come to maturity in the contemporary world where the ability to feed large numbers of ecological refugees may well diminish. It is also possible that the secondary effects of the collision of population growth and climate change could create what scientists call an “asymmetrical uncertainty.” The possible consequences of this asymmetrical uncertainty on political processes and violence could range from a slow worsening of the current situation to extremely serious conflict over resources and threats to security. Biologically, adverse factors can interact in ways that can cause a rapid downward spiral. For example, as noted above, ambient temperatures over 29°C (84°F) lead to a rapid decline in crop yields.

[At least 95% of the food production in the Sahel is based on rain-fed agriculture. The agricultural sector employs, directly or indirectly, more than half of the Sahel’s population…Global warming will mean that in temperate lands, where much of the global crop production occurs, the most productive regions will migrate away from the equator. While the net aggregate change as a result of climate change at a global level may be slow, the regional effects in the Sahel will be more rapid, significant, and adverse.] – source

8.) The El Nino Southern Oscillation(ENSO):

Climate models appear to be unable to accurately predict ENSO changes. Although scientists can predict some large-scale and long-term effects of anthropogenic global warming, there remains a lot of unknowns about specific regional effects.

The problem may lie in the models’ inability to reproduce the cycling between the ENSO’s El Niño and La Niña phases, especially given that many scientists think that La Niña is the major driver of drought in the southwest. The ENSO “behaves much messier in the real world than in climate models”, says Jessica Tierney, a climate scientist at the Woods Hole Oceanographic Institution in Massachusetts who has investigated the role of the ENSO in East African rainfall variability². “We’re not sure how it has varied in the past, and we don’t know how it might change in response to climate change. This is really one of the big uncertainties we’re facing.”

In addition to their failure to reproduce El Niño and La Niña, existing models do not fully capture other factors that influence rainfall, such as clouds and vegetation. But Smerdon adds that the atmospheric and oceanic dynamics that inhibit rainfall and favour prolonged drought may be essentially random and so almost unpredictable.

Last week’s findings highlight the broader challenge of predicting how precipitation patterns will change as the global climate warms. Models are often at odds over the very direction of regional changes. For example, different projections prepared for the Colorado Water Conservation Board disagree on whether mean precipitation in the state will increase or decrease by 2050 (ref. 3).

But the uncertainties don’t change the larger picture, scientists say. “Climate models are not perfect, but they do the big things really well,” says Tierney. “We can be pretty confident that the southwest will warm and that water will become scarcer.

However, new research indicates La Nina instead of El Nino conditions in a warming planet: [La Niña conditions are “mostly the opposite of those of El Niño.“]

…since the 1970s the atmospheric circulation patterns over the Pacific have tended to favor La Nina conditions over El Nino ones. And, they write: “The overall trend towards a stronger, La Niña-like Walker circulation is nearly concurrent with the observed increase in global average temperatures.”

9.) The Atlantic Thermohaline Circulation (THC):

From the THOR project…

We know from historical data that from these two climatic events – the Medieval Warm Period(the long stable warming period over Europe) and the Little Ice Age(a well-known described historical event) – that the temperature changed, and our big question is, “Does the ocean also respond in this very short time scale?”

And one of the major results and maybe one of the biggest prices is that the ocean and the thermohaline circulation(THC) respond to these thermal drivers within just a decade.

…What we are mostly concerned about is that there is a certain threshold which is then reached, a certain point of no return more or less. So we will have a trend where it’s getting warmer and warmer and warmer, and there will be no return from this warming… and that will change the whole system, the whole flow of the system, and the thermohaline circulation may be changed…

The major threats we see right now to the thermohaline circulation mainly derive from the Arctic region. We see increased melting from the Greenland Ice Sheet. We see a retreat of Arctic See Ice. We see large reorganizations in the Arctic ocean system which accumulate fresh water. All of these things are components which may affect the thermohaline circulation.”

The most important factors affecting changes in the conditions of the thermohaline circulation are:

1.) Global warming itself caused partly by greenhouse gases from human activity.

2.) From AGW, there will be more rainfall in the higher latitudes causing glacial melt.

Density in the water is a key factor for the THC driver mechanisms. Cold surface water temperatures make the water denser and high ocean salinity cause these waters to sink. These are the main engines that run the THC, but now more fresh water is entering the ocean through the melting of the Arctic and Greenland ice sheets.

When this is integrated into the models, a new development of the engines is revealed. In a warmer climate state, the engine of the Labrador Sea seems to simply collapse…

10.) The Indian Summer Monsoon:

…Writing in the journal Environmental Research Letters, researchers at the Potsdam Institute for Climate Impact Research and Potsdam University in Germany said increasing temperatures and a change in strength of a Pacific Ocean circulation pattern known as the Pacific Walker circulation in spring could cause more frequent and severe changes in monsoon rainfall.

The Walker circulation usually brings areas of high pressure to the western Indian Ocean but in El Nino years this pattern gets shifted eastward, bringing high pressure over India and suppressing the monsoon, they said.

Computer simulations show that with future global warming the Walker circulation is likely to bring more high pressure over India even without an increase in El Nino events.

These failures of the monsoon system suggested by the simulation, defined as a 40 percent to 70 percent reduction in rainfall below normal levels, were unprecedented in the researchers’ observational record, taken from the India Meteorological Department dating back to the 1870s.

“Our study points to the possibility of even more severe changes to monsoon rainfall caused by climatic shifts that may take place later this century and beyond,” lead author Jacob Schewe said. – source

Yesterday at the site “America 2.0”, Jay Hanson of DieOff.org quoted from the book “Under a Green Sky: Global Warming – the Mass Extinctions of the Past – and What They Can Tell Us About Our Future” (with his own comments at the end):

Indeed if humans were able to set aside their anthropocentric view of the world, we would be frantically changing our behavior and rearranging our economic and social activities in order to prevent our own demise. But alas, if things aren’t right between one’s ears, then everything else is moot.

(Edit on 3-9-2015: The following video has been made “private”, but it can be viewed in its entirety here.)

Tipping Points for Runaway Climate Change: West Antarctic Ice Sheet

28 Friday Dec 2012

Posted by xraymike79 in Capitalism, Climate Change, Ecological Overshoot, Environmental Degradation, Pollution

≈ 3 Comments

Tags

A Perfect Circle, Arctic Ice Melt, Capitalism, Climate Change, Climate Chaos, Climate Feedback Loops, Climate Tipping Points, CO2 Emissions, Collapse of Industrial Civilization, Ecological Overshoot, Environmental Collapse, Extinction of Man, Faulty Climate Models, Global Famine, Greenland Ice Sheet Melt, Inverted Totalitarianism, James Hansen, Makiko Sato, Mass Die Off, Methane Time Bomb, Resource Wars, Runaway Climate Change, Sea Level Rise, West Antarctic Ice Sheet Melt, Zombification of the Planet

Amongst all the drama of the fiscal cliff, the story that should have gotten front page space this week is that the Antarctic is melting much faster than previously thought. In my post ‘Burning the Candle at Both Ends‘, the recent finding that the Antarctic was indeed losing ice came as a revelation to many and dispelled the popular belief amongst the global warming ‘denialist’ crowd that the South Pole ice sheet was increasing. The situation has now gotten more dire:

What are the ramification of this? We’ve released another ticking methane time bomb and opened up one more pandora’s box of known and unknown feedback loops:

…Half the West Antarctic ice sheet and a quarter of the East Antarctic sheet lie on pre-glacial sedimentary basins containing around 21,000bn tonnes of carbon, said the scientists, writing in the journal Nature.

British co-author Prof Jemma Wadham, from the University of Bristol, said: “This is an immense amount of organic carbon, more than 10 times the size of carbon stocks in northern permafrost regions.

“Our laboratory experiments tell us that these sub-ice environments are also biologically active, meaning that this organic carbon is probably being metabolised into carbon dioxide and methane gas by microbes.”

The amount of frozen and free methane gas beneath the ice sheets could amount to 4bn tonnes, the researchers estimate…

guardian.co.uk, Wednesday 29 August 2012 13.00 EDT

And what will happen to coastal communities? If one were to perform a linear projection of sea level rise from recent records, then you would get the following results:

…Currently, sea level is rising at the rate of 3 mm each year. Given 1″ = 25 mm, this means by the end of the century a rise of 87 (yrs) x 3 mm / yr. = 261 mm or (261 mm/ 25 mm/in) = 10.44 inches – enough to wash away roughly one third of S. Florida and most of the sea level areas of the Atlantic coast…

But this year’s shocking display of rapid ice melt in the Arctic and Greenland, in addition to new findings of the Antarctic warming at twice the rate as was previously thought, should be enough to tell you that future trends involving systemic changes in the environment will most certainly be exponential in nature, not linear. In other words, such effects as sea level rise will be orders of magnitude greater than what has been predicted:

…IPCC (2007) suggested a most likely sea level rise of a few tens of centimeters by 2100. Several subsequent papers suggest that sea level rise of ~1 meter is likely by 2100. However, those studies, one way or another, include linearity assumptions, so 1 meter can certainly not be taken as an upper limit on sea level rise…

…Hansen (2005) argues that, if business-as-usual increase of greenhouse gases continue throughout this century, the climate forcing will be so large that non-linear ice sheet disintegration should be expected and multi- meter sea level rise not only possible but likely. Hansen (2007) suggests that the position reflected in IPCC documents may be influenced by a “scientific reticence”…

…Perceived authority in the case of ice sheets stems from ice sheet models used to simulate paleoclimate sea level change. However, paleoclimate ice sheet changes were initiated by weak climate forcings changing slowly over thousands of years, not by a forcing as large or rapid as human-made forcing this century. Moreover, in a paper submitted for publication (Hansen et al., 2013) we present evidence that even paleoclimate data do not support the degree of lethargy and hysteresis that exists in such ice sheet models…

…The increasing Greenland mass loss in Fig. 1 can be fit just as well by exponentially increasing annual mass loss, a behavior that Hansen (2005, 2007) argues could occur because of multiple amplifying feedbacks as an ice sheet begins to disintegrate. A 10-year doubling time would lead to 1 meter sea level rise by 2067 and 5 meters by 2090. The dates are 2045 and 2057 for 5-year doubling time and 2055 and 2071 for a 7-year doubling time.

However, exponential ice loss, if it occurs, would encounter negative (diminishing) feedbacks. Our simulations (Hansen and Sato, 2012) suggest that a strong negative feedback kicks in when sea level rise reaches meter-scale, as the ice-melt has a large cooling and freshening effect on the regional ocean. Such a slowdown in the rate of sea level rise would be little consolation to humanity, however, as the high latitude cooling would increase latitudinal temperature gradients, thus driving powerful cyclonic storms (Hansen, 2009), and coastlines would be continually moving landward for centuries.

West Antarctic ice is probably more vulnerable to rapid disintegration than Greenland ice, because the West Antarctic ice sheet rests mainly on bedrock below sea level (Hughes, 1972). The principal mechanism for mass loss from West Antarctica is warming of the ocean, melting of West Antarctic ice shelves, and thus increased flux from the ice sheet to the ocean.

The several analysis methods compared by Shepherd et al. (2012) concur that the West Antarctic ice sheet mass imbalance has grown since 2005 from an annual mass loss of 0-100 Gt ice to a recent annual mass loss of 100-200 Gt ice (Fig. 4 of Shepherd et al.)…

There are roughly seven billion humans on Earth at this time, all of whom have a death sentence hanging over their head via anthropomorphic climate change. Perhaps this partly explains the recent popularity of zombies and the ‘walking dead’ in our culture. Forthright thoughts on this subject from a scientist commenting at the Arctic Sea Ice Blog:

The first signs have appeared of what will be a mass culling of the human population by way of famine in the decades to come:

…According to the Food and Agriculture Organisation in Rome, global wheat production is expected to fall 5.2% in 2012 and yields from many other crops grown to feed animals could be 10% down on last year.

“Populations are growing but production is not keeping up with consumption. Prices for wheat have already risen 25% in 2012, maize 13% and dairy prices rose 7% just last month. Food reserves, held to provide a buffer against rising prices, are at a critical low level. It means that food supplies are tight across the board and there is very little room for unexpected events,” said Abdolreza Abbassian, a senior economist with the FAO…

My youngest son, who is eight years old, shocked me last week with a certain question. I don’t talk about the subject matter of this blog to him for obvious reasons. He asked me whether in the future the world would become a sort of technological paradise or a destroyed planet. I couldn’t answer his question. I didn’t even want to try.

Burning the Candle at Both Ends

01 Saturday Dec 2012

Posted by xraymike79 in Capitalism, Climate Change, Corporate State, Ecological Overshoot, Environmental Degradation, Peak Oil, Pollution

≈ 4 Comments

Tags

Addiction to Fossil Fuels, Antarctic Ice Melt, Capitalism, Climate Change, Collapse of Industrial Civilization, Corporate State, Ecological Overshoot, Environmental Collapse, Evolutionary Dead End, Extinction of Man, Fossil-Fuel Based Economy, Greenland Ice Sheet Melt, Ice Sheet Mass Balance Inter-comparison Exercise (IMBIE), Inverted Totalitarianism, Mass Die Off, Runaway Climate Change

The claims of near term extinction for mankind are getting stronger and stronger as new scientific evidence is released. Sometime before the end of this century, we’ll all be toast, so any measures we take now at “building resilience” will only be short-lived exercises in self-preservation. That’s how short-sighted we humans are: no consideration for the children and future generations. As long as we can stay comfortably cocooned within the wasteful amenities and faux culture distractions of industrial civilization, we’ll keep sucking on the great ‘carbon energy’ cigar to keep the illusion going, despite the fact that we’re committing species suicide. We are like the domesticated animal that can no longer survive in the natural world. Our addiction to fossil fuels has literally become an ingrained trait, selectively advantageous in the short-term but ultimately leading to our own evolutionary dead end.

If you missed it, the latest news is that, contrary to the propaganda put out by climate change deniers, the Antarctic is not gaining ice, but losing ice:

Global warming is melting Greenland and Antarctic ice and …

This is not good news. A new international study—done by 47 experts using data from multiple satellites and aircraft—shows that the Earth is losing ice at an ever-increasing rate from both poles. We’ve known for years that the Arctic has been suffering massive ice loss, with the record low broken more than once in recent years. What’s devastating about this new report is that it shows unequivocally and quantitatively that the Antarctic is also losing land ice, with the critical West Antarctica ice sheet losing on average 65 billion tons of ice every year.

Measuring ice is difficult to do and uncertainties are generally pretty big. By combining several different methods from several different sources, the scientists were able to get the best, most accurate measurements ever made. These new data show that the ice loss from both poles has increased by a factor of three since the 1990s. Just Greenland—the largest source of fresh water ice in the Northern Hemisphere—is losing ice at a rate five times what it did just in the 1990s: about 142 billion tons per year.

Together, since 1992, this ice melt has added over a centimeter (about a half inch) to sea level rise. That may not sound like much, but it doesn’t take much rise in sea levels to start causing catastrophic changes in erosion, storms, and flooding. Worse, this accounts for only about one-fifth of the total amount of sea level rise. Much of the rise is due to the water in the oceans expanding due to warming and other sources.

There’s a double whammy for you: Global warming is increasing the amount of water in the oceans from melting ice, and also increasing the sea level rise by heating up the water itself…

…This new study wipes out yet another false claim from climate change deniers, too. A common refrain from them is that Antarctic ice is increasing, not decreasing. However, this is not true for two reasons. The first is that they count sea ice in that measure. However, Antarctic sea ice tends to melt away completely every year in the spring and summer, and then it reforms in the winter. It therefore on average does not contribute to sea level rise or to the heat budget of the Earth. Second, this new study shows the claim is wrong anyway. We are losing ice from Antarctica every year, and it’s the critical land ice…

I’m sorry to say this, but all the ghastly visions of runaway climate change may very well come to fruition, wiping any trace of humans off the face of the Earth. In the end, man wasn’t really any different from lowly bacteria overwhelming the confines of a petri dish and extinguishing themselves. I’m sure we’ll have amassed an amazing trove of video, literature and other media documenting the horrors to come so that when some alien race visits the planet in the future, they will be able to watch bemused at how humans killed themselves off in the name of “progress” and a dollar.

World’s Youth Call for Urgent Action at U.N. … – Democracy Now!

Michael Sandmel:
“We make up half the world’s population, and frankly, we’re being screwed. We’re being denied a future by a lack of ambition, a lack of vision, and governments that are far too beholden to the interests of big fossil fuel companies, big coal companies, the banks that fund them.”

Capitalist Carbon Man

28 Friday Sep 2012

Posted by xraymike79 in Capitalism, Climate Change, Corporate State, Ecological Overshoot, Environmental Degradation, Pollution

≈ 1 Comment

Tags

Addiction to Fossil Fuels, Arctic Sea Ice Melt, Fossil-Fuel Based Economy, Greenland Ice Sheet Melt, Greenwashing, Mass Die Off, Resource Exploitation

Sometime next week I’ll post part two of climate tipping elements, but I want to emphasize right now that industrial civilization’s undoing will be its transgression of environmental elements which will cause dramatic and worsening rates of climate change. The delusion that there will be nice, slow and predictable changes from anthropogenic climate change has already been destroyed by the first tipping point of the melting Arctic sea-ice sheet and its multiple, concomitant feedback loops. The Arctic is now irreparably altered, never to recover from the clumsy tinkering and meddling of human hands. Arctic animal species face mass extinction not only from the loss of their habitat but also from hybridization and competition from southern species migrating northward as well as the spread of diseases. Bid adieu to those disappearing glacial Arctic landscapes once designated as World Heritage sites.

Concerning rapid development of climate chaos:

The consequences for the biosphere of accelerating climate change are discussed by Baronsky et al in the following terms:

Localized ecological systems are known to shift abruptly and irreversibly from one state to another when they are forced across critical thresholds. Here we review evidence that the global ecosystem as a whole can react in the same way and is approaching a planetary-scale critical transition as a result of human influence.

Climates found at present on 10–48% of the planet are projected to disappear within a century, and climates that contemporary organisms have never experienced are likely to cover 12–39% of Earth. The mean global temperature by 2070 (or possibly a few decades earlier) will be higher than it has been since the human species evolved.

At 400ppm CO2, potential climate conditions have reached levels which last existed in the peak Pliocene epoch (5.3-2.6 million years ago). Given an increase in extreme weather events under conditions of +0.8C, an even higher rate of extreme events is expected under conditions of +2.0C currently shielded by industrially emitted sulphur aerosols.

Like 99.999% of the population, I do have to generate a living which means coercive participation in the predominant economy. This forced inclusion in the globalized capitalist model is illustrated quite well in the following article. If you’re in a hole, quit digging. But if you are capitalist carbon man, then you can’t help but keep digging:

KANGERLUSSUAQ, Greenland – President Lee Myung-bak said Sunday Korea wants to help Greenland pursue economic development in an environmentally friendly way, expressing sadness and concern after seeing the Arctic glaciers that are melting due to global warming…

‘Development’ is the code word for supplanting nature with the money-generating schemes of capitalist carbon man.

Lee arrived in Greenland earlier in the day to take a first-hand look at problems resulting from climate change and to hold talks with Premier Kuupik Kleist of the Danish autonomous territory about green growth, resource development and Arctic shipping routes…

There’s that oxymoron again – “green growth”. Development and growth by industrial civilization is neither green nor sustainable. It’s simply another nail in the coffin for the natural world and all other species that don’t have an opposable thumb, walk upright, and trade shares on Wall Street.

Upon arrival at the airport in the small town of Kangerlussuaq, Lee flew on a light plane to Ilulissat, a Unesco World Heritage site known for its famous icefjord, one of the best locations to observe melting Arctic glaciers, icebergs and ice sheets…

Was that “light plane” another product of “green growth” and “sustainable development”? Perhaps it was buoyed in the air by magical green technology.

Premier Kleist and Danish Crown Prince Frederik traveled together with Lee.

“This is a tragic site,” Lee said aboard an icebreaker while touring the ice-floating sea, apparently meaning that global warming, caused by economic development, is having serious impacts on the environment…

…Increasingly warm weather has led to Arctic ice melting dangerously…

No shit, it’s caused by “economic development”! But these twits think attaching the word ‘green’ to the word ‘development’ will make everything all better. Capitalist carbon man is apparently no smarter than yeast in a petri dish. Yeast in a petri dish never choose degrowth over reproducing and consuming ever more.

Melting occurred on about 40 percent of the surface of Greenland’s ice sheets on July 8, but it expanded to 97 percent only four days later. A massive glacier twice the size of Manhattan broke off from Greenland recently, officials said.

Lee’s entourage also included three special members: prominent Korean climber Um Hong-gil, who is the world’s first to scale the globe’s 16 tallest mountains; famous cartoonist Hur Young-man; and Shin Soo-min, a college student chosen for his enthusiasm about green growth.

Carbon dioxide and other heat-trapping gases are blamed for warming the globe.

In an effort to tackle the issue, Lee has championed what is dubbed the “low carbon, green growth” policy, one of Lee’s trademark policies that calls for seeking economic growth through environmentally friendly technologies and industries without releasing greenhouse gases…

Oh, so now we will also attach the words ‘low carbon‘ to the word ‘development’. Sugar and spice and everything fucking nice!!!

Greenland is also rich in oil, rare earth materials and other resources. According to the U.S. Geological Survey, about 17 billion barrels of oil are estimated to be buried along Greenland’s western coast, with another 31.4 billion barrels along the northwestern coast.

Greenland is also believed to be holding the world’s largest reserves of rare earth materials. At least 10 regions have been confirmed to be holding the increasingly important resources, with the southern region holding enough reserves to meet 25 percent of global demand, officials said.

During the flight to Ilulissat, Prince Frederik told Lee that he hopes countries like Korea will help develop Greenland while preserving its environment. Lee said in response that he came to Greenland with “the spirit of green growth.”

Later in the day, Lee held talks with Kleist about ways to boost cooperation in green growth and resources development, saying Korea is willing to work actively together to transform “environmental crisis” into “economic opportunities.”

The two sides also signed four memoranda of understanding calling for cooperation in resources development, geological survey and Arctic science and technology. The agreements are expected to serve as a foothold for Korea’s participation in Greenland’s development.

“South Korea wants to seek economic development in a way that Greenland remains green,” Lee said during the signing ceremony. “I hope Greenland will be preserved as Greenland forever. In this sense, South Korea can be a good partner.

So now the truth comes out from under the cloak of feel-good greenwashing. We just can’t wait to get our hands on all that newly revealed, CO₂-polluting carbon energy. How else would we be able to run our fossil fuel-based economies? Oh boy, we really do have more than enough fossil fuels to destroy every living thing on Earth, and like a moth’s fatal attraction to a flame, we just can’t stop ourselves. A few types of heat-loving bacteria will be the last remaining survivors in this brave new world of our own creation.

Tipping Points for Runaway Climate Change, Part One

23 Sunday Sep 2012

Posted by xraymike79 in Capitalism, Climate Change, Corporate State, Ecological Overshoot, Environmental Degradation, Pollution

≈ 3 Comments

Tags

Amazon Rain Forest Drought, Arctic Sea Ice Melt, Boreal Forest Destruction, Geneticist Andrea Manica, Greenland Ice Quakes, Greenland Ice Sheet Melt, Hans Joachim Schellnhuber, Professor Tim Lenton, Runaway Climate Change, Tipping Elements in the Climate System

Coronal Mass Ejection from August 31, 2012. And the associated 4096×4096 (!) video.

What force, more than anything else, has regulated the evolution and expansion of mankind throughout history? A new study with climate models by geneticist Andrea Manica at the University of Cambridge, UK, and his colleagues shows how sensitive the human species has been to climate over the past 120,000 years and continues to be to the present day. The rise and fall of ice sheets and sea levels and the desertification of continents acted as road blocks to control the migration and settlement of humans across the planet.

…To see just how sensitive our species has been to changes in climate over the ages, Manica ran the model several times, varying the strength of climate’s effect on populations.

In parallel, he also modelled the history of human genetic variation, and compared that with real data on the genetic makeup of modern populations. Strikingly, he was only able to reproduce the known timings of migrations, and the real-world genetic data, if the human populations in his model were highly sensitive to the climate.

It’s the first time anyone has been able to explore climate’s power to facilitate human expansion, says Rick Potts of the Smithsonian National Museum of Natural History in Washington DC. “The study fills in many of the links that have only been assumed or guessed at,” he says…

…Stewart has proposed that earlier bouts of climate change helped the many hominin species to evolve, by forcing them into isolated refuges where they evolved separately (Science, doi.org/jcz). If that’s correct, climate has been determining our fate for even longer than Manica’s model suggests.

Manica argues that modern civilisation is still highly dependent on the climate. Many societies have declined or collapsed when faced with climate change, for example.

While agriculture produces more food than hunting and gathering, and so supports more people, ultimately climate’s effect on food production still limits our population. “We are very much governed by climate,” he says.

With the discovery of oil, coal, and other fossil fuels we were able to vastly increase our numbers. Our entire transportation system, industrialized agricultural system, globalized economy of trade, and modern medical system would not exist without fossil fuels. Even so, humanity could have dealt with the painful problem of peak oil by powering down to a less energy intensive way of life, but something much more insidious developed which would throw modern civilization for a loop. Professor Tim Lenton and Hans Joachim Schellnhuber wrote a paper in 2007 identifying 9 specific tipping elements for the Earth’s climate:

Click to Enlarge…

1.) The Arctic sea ice is considered a “highly sensitive” tipping point with low uncertainty and is expected to disappear completely in summer within a decade, leaving behind open and dark waters which will absorb more of the sun’s heat that once was reflected by white ice.

In figure below, global emissions cause warming, especially in the Arctic, where warming is further accelerated by feedbacks, in particular sea ice loss and methane releases, threatening to lead to runaway global warming.

From the following graph, you can see Lenton’s and Schellnhuber’s tipping points (8 of 14) which are sensitive(yellow/red) to just a few degrees of warming:

Several positive feedbacks have been identified within the first tipping point of disappearing Arctic sea ice:

There are at least three positive feedbacks working together to reinforce one another – and now a fourth on salinity:

The albedo flip effect as sea ice is replaced by open water absorbing more sunlight, warming and melting more sea ice.

As the sea ice gets very thin, it is liable to break up easily and get blown into open water where it will melt more easily.

The open warmer water is allowing increased strength of storms, which break up the ice to make for more open water.

The storms are churning up the sea to a depth of 500 metres, producing salinity at the surface that will mean slower ice formation in winter and more open water next year.

These feedbacks are dangerous for methane. AMEG has been warning that, as the sea ice retreats, storms will warm the sea bed, leading to further release of methane. In ESAS, we only need mixing to a depth of 50 metres – so a storm capable of mixing to 500 metres will really stir things up.

Another feedback is the pollution and soot resultant from increased shipping traffic, oil drilling activity, and other exploitive ventures by our ravenous and wrong-headed culture. Like arsonists taking pleasure in their destructive activities, industrial civilization simply throws more fuel into the bonfire of anthropogenic climate chaos. You can see plainly from the current Arctic resource grab that “THE MARKET” is a soulless, nihilistic, and sapient-less entity with a one-track mind of commodification and exploitation.

2.) The Greenland ice sheet is considered a “highly sensitive” tipping point with low uncertainty and a decay time of approximately 300 years as cycles of degradation and regrowth tip toward melting. A rise in sea levels of more than 20 feet is estimated from the melting of the Greenland ice sheet.

As with other underestimations of mankind’s effect on nature, we have done the same with the destruction of the Greenland ice sheet:

The Greenland ice sheet is likely to be more vulnerable to global warming than previously thought. The temperature threshold for melting the ice sheet completely is in the range of 0.8 to 3.2 degrees Celsius of global warming, with a best estimate of 1.6 degrees above pre-industrial levels, shows a new study by scientists from the Potsdam Institute for Climate Impact Research (PIK) and the Universidad Complutense de Madrid. Today, already 0.8 degrees of global warming has been observed. Substantial melting of land ice could contribute to long-term sea-level rise of several meters and therefore it potentially affects the lives of many millions of people.

The time it takes before most of the ice in Greenland is lost strongly depends on the level of warming. “The more we exceed the threshold, the faster it melts,” says Alexander Robinson, lead-author of the study now published in Nature Climate Change. In a business-as-usual scenario of greenhouse-gas emissions, in the long run humanity might be aiming at 8 degrees Celsius of global warming. This would result in one fifth of the ice sheet melting within 500 years and a complete loss in 2000 years, according to the study. “This is not what one would call a rapid collapse,” says Robinson. “However, compared to what has happened in our planet’s history, it is fast. And we might already be approaching the critical threshold.”…

And the surprises just keep on coming(click on pic to go to story):

…and unprecedented ‘Ice Quakes'(click on pic to go to story):

3.) The Boreal Forest, which rings the northern latitudes and provides habitat for migratory bird species and other wildlife, could die back within 50 years as trees succumb to summer heat stress, increased diseases and other threats. This is considered an “intermediately sensitive” tipping point with large uncertainty.

The most noteworthy destruction of boreal forests is the extraction of Canadian tar sands:

-Oil sands mining is licensed to use twice the amount of fresh water that the entire city of Calgary uses in a year.
-At least 90% of the fresh water used in the oil sands ends up in ends up in tailing ponds so toxic that propane cannons are used to keep ducks from landing.
-Processing the oil sands uses enough natural gas in a day to heat 3 million homes.
-The toxic tailing ponds are considered one of the largest human-made structures in the world.
-The ponds span 50 square kilometers and can be seen from space.
-Producing a barrel of oil from the oil sands produces three times more greenhouse gas emissions than a barrel of conventional oil.

PDF of report here via ::DeSmogBlog

As if the hellish blight of tar sands operations was not enough of a sacrifice zone for our unsustainable lifestyles, plans are being laid to duplicate the process for America’s own oil sands project in Utah.

Inside Climate News reports:

An administrative law judge in Salt Lake City has ruled against two environmental organizations that are trying to block a Canadian company’s plan to open the first large-scale oil sands mine in the United States.

Judge Sandra Allen sided with U.S. Oil Sands and Utah’s Division of Water Quality in deciding that the state rightfully granted the Calgary-based company permission to mine and process oils sands without requiring a pollution permit or water monitoring at the PR Spring mining site in eastern Utah. The judge agreed with the Water Quality Division’s opinion that there is so little ground water within 1,500 feet of the surface of the proposed mine that additional safeguards weren’t needed.

Greenpeace reports:

The northern boreal forests comprise almost one third of the Earth’s forest systems, covering 1.5 billion hectares. Along with the temperate forest of the mid-latitudes, and tropical forest near the equator, it is one of the three great forest ecosystems of the world, supporting a rich diversity of wildlife, endangered species, and extremely valuable timber…

…There is general consensus that climatic changes will have the greatest impact on boreal forests; their unique adaptation makes them more sensitive to temperature fluctuations than temperate or even tropical forests. Indeed, fossil pollen and macro fossil records demonstrate that North American boreal forests expanded and receded in response to temperature changes over the past 10,000 years. Even a slight increase in mean annual temperature is enough to affect many species’ growth and regeneration…

…The rate of climate change — and not the change itself — is perhaps the biggest threat to the boreal forest. With rapid change, conditions may become unsuitable for trees to complete their life cycle. Seedlings are especially sensitive to short-term drought, saplings to varying levels of sunlight, and mature trees to soil moisture during the growing season. Thus, in a kind of “arrested development,” healthy-looking tree populations may not ever mature to the point of reproduction. Entire remnant stands of forest may no longer sustain themselves, or their resident animal and plant communities. A temperature rise of only 2 degrees C could, for example, eliminate up to half of the animals currently inhabiting boreal mountain ranges from the Rocky Mountains to the Sierra Nevada…

4.) The West Antarctic Ice Sheet could collapse within 300 years, leading to a sea level rise of as much as 15 feet worldwide. This is considered an “intermediately sensitive” tipping point with large uncertainty.

A new study sheds light on the vulnerability of the Antarctic to climate change(clink on the pic to go to story):

5.) The Amazon rainforest could die back significantly within 50 years due to a combination of deforestation and global warming, which could trigger a 30% decrease in rainfall. This is considered an “intermediately sensitive” tipping point with large uncertainty.

The Amazon Rainforest is expected to be reduced by 40% by 2030 at the current rate of deforestation, despite recent reductions. A current scientific paper states that due to deforestation, the Amazon is becoming a net CO2 emitter rather than a sink for the world’s carbon dioxide. When we take into account the uncertainties of climate change-induced droughts, the prospect of losing one of the earth’s major lungs becomes a near certainty:

…One of the scarier possibilities to emerge from this body of work is worth dwelling on a bit, simply because it would be so devastating if it came to pass: the so-called Amazon dieback scenario. Many scientists were deeply skeptical of the idea when it was first published, but events in the last few years have made them less dismissive.

The scenario emerged most clearly in computer analyses in Britain led by Peter M. Cox of the University of Exeter and published in 2000 as a paper in the journal Nature. Running a large-scale computer simulation in which forests interacted with a changing global climate through the course of the 21st century, the Cox group found that forests would continue to take up carbon until about 2050.

But then, their computer predicted, warmer temperatures and water stress would cause a huge dieback of the Amazon forest, which would stop absorbing carbon and start emitting it as a result.

That was a startling possibility for many reasons, not the least being that the Amazon is the richest single ecosystem left on the planet, and functioning as a major carbon sponge is only one of the critical roles it plays. Might the Amazon really die as a direct consequence of human-induced climate change?…

…[That question] took on a new urgency in 2005, however, when a severe drought hit the Amazon region, killing many large trees. In 2010, there was an even larger drought with potentially worse damage — two “once a century” droughts just five years apart. The 2010 drought is still under study; some evidence suggests that the 2005 drought was linked to high Atlantic Ocean temperatures that may in turn be linked to human emissions of carbon dioxide.

The droughts raise a disturbing question: Could the great dieback predicted for midcentury already be starting?

Scientists do not know. They say the effects of the two droughts are likely to be transient, but only if similar events do not recur anytime soon. Oliver L. Phillips, a researcher at the University of Leeds, led a team that documented a huge loss of carbon in the Amazon because of the 2005 drought. “The most likely outcome is that the forest will gain all that carbon back, and then some,” he said in an interview.

But he and other scientists say that if the Amazon starts experiencing such droughts every few years, all bets are off.

“It’s a worrisome moment for the Amazon,” said Daniel C. Nepstad, an American scientist working at the Amazon Environmental Research Institutein Brazil to understand the pressures on the forest. “This is either just a big coincidence that we had these two severe droughts in close sequence, or it is a sign of things to come.”…

Satellite view of deforestation in Rondônia, Brazil, 1975 and 2012

Despite recent efforts by Brazil to curb deforestation, it continues at a ferocious pace outside Brazil’s borders:

Amazon deforestation grows outside Brazil – SFGate

…In Brazil, the enforcement of land-use laws reduced deforestation by 76 percent in eight years, from 10,424 square miles in 2004 – when a swath bigger than Maryland was cleared of jungle – until last year, when the country’s National Institute for Space Research reported that 2,471 square miles had been destroyed.

But more than 40 percent of the Amazon jungle is beyond Brazil’s borders, spread across eight countries in a carpet of green six times the size of California. These countries are poorer and less stable than Brazil, with less capacity to control clear-cutting of trees. Government agencies that regulate land use are spread thin, and some of those countries, including Bolivia, actively promote development in the jungle.

Satellite data and field work by environmental and forestry ministries in the region show that deforestation in the non-Brazilian Amazon rose from an annual average of 1,930 square miles in the 1990s to 2,779 square miles last year.

“There’s more deforestation going on in the Andean Amazon than in the Brazilian Amazon,” said Timothy Killeen, an ecologist and geographer in Bolivia who works with environmental groups and has been studying deforestation in the Amazon for 25 years. “Before, Brazilian deforestation was four times as great as in the Andean Amazon. Now the Andes has more. We’re winning the battle in Brazil but losing the battle in the Amazon.”

Environmentalists say the destruction of the Andean Amazon is particularly worrisome because it affects the lifeblood of the entire Amazon, the rivers flowing down from the Andes.

This post is part one of a three-part series. In the second part I will talk about the other climate change tipping points as described by Professor Tim Lenton.

I imagine a child born today would look at all adults as grotesque monsters. With the world we are leaving them, how could they see us otherwise…