"In a time of universal deceit telling the truth is a revolutionary act." -George Orwell

Posts Tagged ‘Antarctic Ice Sheet’

“We are underestimating the speed at which these things are beginning to happen.”: Prominent Climate Scientist Warns Sea Levels Are Rising Faster Than We Thought

In Uncategorized on July 21, 2015 at 2:49 pm

Half the world’s population lives within 60 km of the ocean.

Oldspeak:High emissions will make multi-meter sea level rise practically unavoidable and likely to occur this century, It is not difficult to imagine that conflicts arising from forced migrations and economic collapse might make the planet ungovernable, threatening the fabric of civilization….The research explains that there is an “amplifying feedback” as polar ice melts, because as more freshwater enters the ocean, it traps warmer sea water, which melts more ice. The effect is not included in the current Intergovernmental Panel on Climate Change (IPCC) modeling but “extensive data indicate [it] is already occurring…-Samantha Page

“There goes that phrase again. “faster than we thought.” my response? No shit. In the context of news like this, this, and this. This is entirely predictable. Yes sea level is rising faster than predicted, because polar melting has gone non-linear and unpredictable.  Conflicts, forced migrations, economic collapses, portions of the planet that are ungovernable; in progress. But even this esteemed and well-regarded climate scientist in the face of all this dire evidence of the current state of affairs, believes this “problem” can be solved with market based “solutions” like a “carbon tax”. As if the utter futility and duplicity of that “fix” has not been understood by Hansen himself years ago!!! This man is literally on record saying “Because cap and trade is enforced through the selling and trading of permits, it actually perpetuates the pollution it is supposed to eliminate. If every polluter’s emissions fell below the incrementally lowered cap, then the price of pollution credits would collapse and the economic rationale to keep reducing pollution would disappear…. It merely allows polluters and Wall Street traders to fleece the public out of billions of dollars.” I wonder who got to him to get him to change his tune? Profit Is Paramount. Meanwhile, half the world lives within 60km of a sea.” -OSJ

 

Written By Samantha Page @ Think Progress:

Limiting climate change to 2°C is not going to protect us from devastating sea level rise, a new report has found.

According to the research, freshwater from land-based ice sheets melting into the oceans is inducing feedback that is accelerating the melting of ice shelves — a loop that indicates sea level rise will continue and could be devastating at much lower temperature changes than previously thought.

The study, authored by well-known climate scientist James Hansen and 16 other researchers, will be published in Atmospheric Chemistry and Physics this week. The research explains that there is an “amplifying feedback” as polar ice melts, because as more freshwater enters the ocean, it traps warmer sea water, which melts more ice. The effect is not included in the current Intergovernmental Panel on Climate Change (IPCC) modeling but “extensive data indicate [it] is already occurring,” according to the report.

“We are underestimating the speed at which these things are beginning to happen,” Hansen, head of the Climate Science, Awareness and Solutions Program at Columbia University’s Earth Institute, said Monday on a call with reporters.

This feedback loop is separate from other accepted science, such as the ice-albedo feedback loop, in which dark-colored water and exposed ground absorb more heat than the white, reflective ice and snow they have replaced.

The implications of this feedback loop are significant, Hansen said.

“This is substantially more persuasive than anything previously published about just how dangerous 2°C will be,” Hansen said on the call Monday.

The study has not been peer-reviewed. Instead, it is being published in a discussion journal, which means will be published in full and made available to the public. Peer review and revisions will be made publicly. The scientific community is sure to weigh in.

Michael Mann, director of the Earth System Science Center at Penn State University, told ThinkProgress that he was “skeptical about some of the specifics” of the paper — for instance, the ocean current modeling and meltwater assumptions. But, overall, Mann supported the discussion the article will prompt.

“Hansen and colleagues make a plausible case that even 2°C planetary warming (something we commit to in just a few years given business as usual fossil fuel burning) could indeed be very bad,” Mann wrote in an email. He pointed to the predicted collapse of the west Antarctic ice sheet and the substantial rise in sea level that would result.

“On that basis alone, the article serves as a sobering wake-up call to those who still dispute the threat posed by our ongoing burning of fossil fuels,” Mann wrote.

In fact, Hansen said it’s the urgency of the issue that prompted him to submit the study to a discussion journal, rather than undergoing peer review, which might have taken too long.

Instead, the study is appearing months in advance of the United Nations’ climate talks in Paris at the end of the year. Governments have already begun outlining their potential commitments to carbon emissions reductions, but Hansen suggested that current goals may not be sufficient to adequately address sea level rise. Other scientists have also criticized the 2°C limit, saying that it will not be sufficient to avoid catastrophic drought, flooding, and other climate impacts.

And the stakes could not be higher, according to the authors. “High emissions will make multi-meter sea level rise practically unavoidable and likely to occur this century,” they write. “It is not difficult to imagine that conflicts arising from forced migrations and economic collapse might make the planet ungovernable, threatening the fabric of civilization.”

Three-quarters of large cities worldwide are located on the coast, making sea level rise a significant climate change risk. In order to prevent this process, we need to curb carbon emissions by 3 percent a year and increase carbon capture through agricultural and forestry practices, Hansen said. Putting a price on carbon is the most effective — and likely only effective — way to address climate change and sea level rise, Hansen told reporters.

“The situation is more urgent than many politicians seem to realize,” he said. “What is really needed to happen requires that the major power decide we want to do this and we want to solve the problem and not just fiddle around the edges.”

At a meeting last month, leaders of the Group of Seven — a coalition of the world’s largest economies — agreed to limit warming to 2°C, but they did not announce a plan or mechanism for reducing emissions. China recently pledged to cut its carbon intensity — its greenhouse gas emissions per unit of GDP — by 60-65 percent from 2005 levels by 2030.

The negotiations of the Conference of Parties (COP) in Paris later this year are broadly structured around an attempt to limit global warming to 2°C through voluntary, agreed-upon carbon emission reductions. Hansen and his colleagues believe that goal is a chimera.

“We conclude that 2°C global warming above the preindustrial level, instead of being a safe ‘guardrail’, is highly dangerous,” the authors write.

World’s Largest Ice Sheets Melting At Fastest Rates In Recorded History

In Uncategorized on August 29, 2014 at 7:31 pm

Oldspeak: “Our planetary thermostats are melting. This trend is irreversible. And with sociopathic corporocratic governments jockeying for position and engaging in all varieties of proxy and direct resource wars to secure and exploit any and all remaining fossil fuels; we can expect warming and melting to increase.  The more ice melts, the more climate refugees are created. The more coastal cities and islands go underwater. The more and more catastrophic damage will be done by ever more powerful and extreme weather events. The more life extinguishing, climate altering greenhouse gasses are released. Sooner rather than later, the conditions necessary for sustaining life will be no more.  We are bearing witness to earths 6th and quickest developing mass extinction. Enjoy the show! Tick, tick, tick, tick, tick, tick, tick, tick…” -OSJ

By John Queally @ Common Dreams:

The world’s two largest ice sheets in Greenland and Antarctica are melting at the fastest rates ever recorded, according to a new study based on detailed satellite imagery.

Presented by scientists at the Germany-based Alfred Wegener Institute, the new research was conducted with the help of sophisticated mapping technology and the use of an ESA satellite (called CryoSat-2) which used radar technology to generate highly accurate elevation measurements of the ice sheets.

What the detailed look at the ice shows is devastating.

“The volume loss in Greenland has doubled since the [year 2000],” explained AWI glaciologist and co-author of the report Prof. Dr. Angelika Humbert. “The loss of the West Antarctic Ice Sheet has in the same time span increased by a factor of three. Combined the two ice sheets are thinning at a rate of 500 cubic kilometres per year. That is the highest speed observed since altimetry satellite records began about 20 years ago.”

Speaking with the BBC, Humbert went further, stating: “The contribution of both ice sheets together to sea level rise has doubled since 2009,” she said. “To us, that’s an incredible number.”

The Huffington Post reports:

The glacier melting the fastest among those measured was the Jakobshavn Glacier in Greenland and the Pine Island Glacier in West Antarctica. The Jakobshavn Glacier is descending into the ocean at a rate of 46 meters — or half a football field — each day. Last year, a chunk of ice twice the size of Detroit broke off the tip of the Pine Island Glacier.

Robert Bindschadler of NASA’s Goddard Space Flight Center recently contributed to a similar study for the Potsdam Institute for Climate Impact Research. “Rising sea level is widely regarded as a current and ongoing result of climate change that directly affects hundreds of millions of coastal dwellers around the world and indirectly affects billions more that share its financial costs,” he said in a press release. By 2100, ice melt from Antarctica alone could add up to 37 centimeters, or more than 14 inches, to global sea levels.

Another study published in the journal Science this month shows that in the last 20 years, human-caused climate change has become the primary driver of glacial melt.

 

 

 

 

Massive, Abrupt Acrtic Ice Shelf Collapses Happening Faster Than Ever Seen; West Antarctic Ice Sheet Irreversibly Unstable

In Uncategorized on January 23, 2014 at 3:41 pm

https://i2.wp.com/pigiceshelf.nasa.gov/img/poster-lg.jpg

Oldspeak:” Pine Island Glacier (two-thirds the size of the UK), 1.2 miles thick, represents 10% of the West Antarctica Ice Sheet… Scientists have an especially keen eye on Pine Island Glacier because it has a greater net contribution of ice to the sea of any other ice drainage basin in the world. Alone, the loss of Pine Island might raise sea levels by less than half an inch, but if the entire West Antarctic Ice Sheet retreated, this would raise sea levels by more than 10 feet… Here’s the problem: Scientists fear a cascading Pine Island Glacier could lead to eventual destabilization of the entire West Antarctic Sheet… On the other hand, the massive Antarctic Ice Sheet, which covers an area bigger than the continental U.S. contains 85%-90% of the world’s ice and could raise sea levels by over 200 feet, which (fortunately) would likely take centuries to collapse….According to the British Antarctic Survey (BAS), Pine Island has “…reached a point of no return….all models suggest Pine Island Glacier has become unstable and even irreversible. The unstable condition is driven, not by higher air temperatures, but rather by a warming ocean at the bottom-waters, eroding the ice shelf.” –Robert Hunziker

Things that normally happen in geologic time are happening during the span of a human lifetime… From the Arctic to Peru, from Switzerland to the equatorial glaciers of Man Jaya in Indonesia, massive ice fields, monstrous glaciers, and sea ice are disappearing, fast.” -Daniel Fagre, U.S. Geological Survey Global Change Research Program

“Short version = WE’RE SOOO  FUCKED.  The thing i don’t get about this piece, is how the author could write something saying an enormous glacier in Antarctica is melting, has reached the point of no return, is irreversibly unstable, that it is feared it will lead to the disintegration of the ENTiRE west antarctic ice sheet which will raise sea level by 1o feet globally; and then spend the last part of the piece talking about “realistic and practical solutions to stopping climate change.”  “Hopeful signs on the horizon worldwide, principally because of human ingenuity combined with science and technology…” There are NO realistic nor practical solutions! They needed to be implemented 30 to 40 years ago.  Irreversible means IRREVERSIBLE! Human ingenuity, science and technology (and I would add sociopathy) are what brought us to Earths 6th mass extinction!!! This shit is happening whether we choose to acknowledge it or not. 10 feet of sea level rise, in addition to the already predicted 3 feet of sea level rise from already emitted human fossil fuel expenditure and another 23 FEET of sea level rise expected from our EVER INCREASING global carbon emmissions means all present day coastlines will be under will be underwater.  Human activity has caused  Multiple, IRREVERSIBLE non-linear positive feedback loops to begin and human activity will no longer mitigate them. Geoengineering is only making things worse. Earth will become uninhabitable by humans and most other forms of life. This is a certainty. There is no fixing this. Our mother is melting, and there is nothing we can do about it.” -OSJ

By Robert Hunziker @ Dissident Voice:

Imagine a 1,160 square mile ice sheet (equivalent in size to Los Angeles, Dallas plus Chicago), which had been stable for thousands of years, suddenly collapsing and crumbling into thousands of icebergs within weeks.

It happened in Antarctica, and the message therein challenges humankind to beware of its own devices, i.e., burning fossil fuels for energy.

A team of researchers from the University of Chicago and Princeton lead by Alison Banwell,1 may have cracked the code to what happened over a decade ago.

It was “like the smashing of glasses at the throw of a stone,” said University of Chicago geophysicist Douglas MacAyeal, co-researcher of the project, at an International Glaciological Society meeting in Beijing.2

What happened at Larsen B Ice Shelf is the warming atmosphere formed thousands of lakes on the surface, and as a result, here’s what the Banwell/MacAyeal’s study found: The disappearance (drainage) of one lake (only one lake) resulted in fractures under all the others: “An effect that can spread rapidly throughout the ice shelf.” Boom! Collapse! All of a Sudden! Abrupt climate change.

Their study begs numerous serious, daunting questions about abrupt climate change as a threat to major coastal cities of the world, if only because 85%+ of the world’s ice resides at the South Pole in Antarctica. And, as for starters: Is the Larsen B Ice Shelf collapse a renegade circumstance, or is it a nasty, threatening harbinger of more to come?

According to NASA, Earth Observatory, World of Change/larsenb: “The collapse of the Larsen appears to have been due to a series of warm summers on the Antarctic Peninsula… nor was the Larsen B the last Antarctic ice shelf to disappear. Farther down the peninsula to the southwest, the Wilkins Ice Shelf disintegrated in a series of break up events that began in February 2008 (late summer) and continued throughout Southern Hemisphere winter… It was the tenth major ice shelf to collapse in recent tines.”

So, it does not appear Larsen B was a renegade at all. It was just stupendously large, as “scientists monitoring daily satellite images… watched in amazement as almost the entire Larsen B Ice Shelf splintered and collapsed in just over one month. They had never witnessed such a large area… disintegrate so rapidly,” Ibid.

Pine Island Glacier

There’s a new kid on the block.

Pine Island Glacier (two-thirds the size of the UK), 1.2 miles thick, represents 10% of the West Antarctica Ice Sheet. It is the most closely watched glacier in the world and also the most treacherous with crevasses underfoot throughout.

Scientists have an especially keen eye on Pine Island Glacier because it has a greater net contribution of ice to the sea of any other ice drainage basin in the world. Alone, the loss of Pine Island might raise sea levels by less than half an inch, but if the entire West Antarctic Ice Sheet retreated, this would raise sea levels by more than 10 feet.

Here’s the problem: Scientists fear a cascading Pine Island Glacier could lead to eventual destabilization of the entire West Antarctic Sheet.

On the other hand, the massive Antarctic Ice Sheet, which covers an area bigger than the continental U.S. contains 85%-90% of the world’s ice and could raise sea levels by over 200 feet, which (fortunately) would likely take centuries to collapse.

According to the British Antarctic Survey (BAS), Pine Island has “…reached a point of no return. The Pine Island Glacier, if it is unstable may have implications for the entire West Antarctic Ice Sheet.”3

Dr. Gael Durand (glaciologist at Grenoble Alps University, Fr.) warns that all models suggest Pine Island Glacier has become unstable and even irreversible. The unstable condition is driven, not by higher air temperatures, but rather by a warming ocean at the bottom-waters, eroding the ice shelf.

As such, the ocean has been absorbing 90% of the planet’s heat.

By its very nature, it is important to digest the horrid consideration behind the unannounced crumbling of the Larsen B glacier within a few weeks, an abrupt climate change in real time. Nobody saw it coming!

Worldwide Glacier Melt

The glaciers of the world are under severe attack.

According to Daniel Fagre, U.S. Geological Survey Global Change Research Program, “Things that normally happen in geologic time are happening during the span of a human lifetime.”4

“From the Arctic to Peru, from Switzerland to the equatorial glaciers of Man Jaya in Indonesia, massive ice fields, monstrous glaciers, and sea ice are disappearing, fast.”4

Peru’s Quelccaya is the largest ice cap in the tropics, and if its current rate of melt continues, 600 feet per year, it will be gone by 2100. In turn, the Quelccaya provides large regions of South America with drinking water, irrigation for crops, and hydropower.

Speaking of large population centers with a dependence upon glaciers, the famed Garhwal Himalaya in India is retreating so fast that researchers are concerned about the disappearance of most of the central and eastern Himalayan glaciers.

Stopping Global Warming/Climate Change

The only realistic solutions to stopping climate change are practical solutions, meaning courses of action that can be initiated within the framework of society. Along these lines, Greenpeace has an initiative:

Greenpeace suggests people join local community organizations to shut down dirty coal plants all across the U.S., applying local pressure from coast-to-coast to switch to renewables. This is a practicable, yet challenging, solution, assuming enough community organizers can push enough hot buttons, and the Greenpeace initiative would include advocating strong laws to curb global warming as well as exposing climate deniers by holding them publicly accountable, and resulting in an Energy Revolution, advocating solar, wind power, and the full panoply of renewables.

But, hold on for one minute, the probability of gathering enough dedicated souls required for the Greenpeace initiative is about as probable as the U.S. Congress passing a bill requiring all coal-burning plants convert to solar power. No additional commentary necessary.

Hopeful Signs Abound Worldwide

Nevertheless, there are hopeful signs on the horizon, principally because of human ingenuity combined with science and technology. Here are a few examples from around the world:

In Seville, Spain, as of a few months ago, 27,000 homes started receiving electricity 24/7 from a remarkable new Concentrated Solar Power facility, Gemasolar, which utilizes molten salt to store heat to run the plant when the sun does not shine, whilst omitting 30,000 tons/year of CO2.

And, in green California, as of September 2013, the Ivanpah Solar Electric Generating System in the Mojave Desert flipped the ‘on switch’, providing electricity from Concentrated Solar Power to 140,000 homes (mostly in San Francisco), omitting 400,000 tons/year of CO2 emissions.

New York announced (January 2014) a $1 billion plan to install enough solar-electric panels to power 465,000 homes. And, in Maine, a bill is under consideration to promote solar energy.

Regarding solar costs in general, since 2008, the price of photovoltaic modules fell 60%, which for the first time puts solar power on a Levelised Cost of Energy (LCOE) competitive basis with conventional energy.5 This remarkable achievement over such a short period of time brings solar to the forefront of an expanding list of locations around the world.

Solar Energizing the World

Solar produces electricity in latitudes as far north as British Columbia, Canada.  For example, ultra overcast, cloudy Germany (in the same latitude as British Columbia) currently produces more solar-powered electricity than 20 nuclear power plants, thanks to enlightened political leadership.

Also, in Germany the price of solar panels has fallen 66% in recent years, and its cost of solar-generated power is projected to be less than coal within the next few years. Already, twenty-two percent (22%) of Germany’s power is from renewables of which twenty-five percent (25%) comes from solar. By way of comparison, solar power accounts for less than one percent (1%) of total U.S. electricity.

As an aside, and as for one more sorry example of America’s embarrassing problem of naiveté of all-things-science, Fox News, in a February 2013 broadcast, discussed Germany’s solar success, when it occurred to host Gretchen Carlson to ask her expert guest, Fox business reporter Shibani Joshi, why Germany’s solar-power sector is doing so well.

Carlson asked, “What was Germany doing correct? Are they just a smaller country, and that made it more feasible?”

Expert Joshi replied, “They’re a smaller country, and they’ve got lots of sun. Right? They’ve got a lot more sun than we do… sure, California might get sun now and then…but here on the East Coast, it’s just not going to work.”

Fact: Germany’s direct solar energy is equal to Canada’s, which is far and away lower direct solar energy than the U.S. Furthermore, the New York/Boston/Washington, D.C. corridor is a sunny tropical isle compared to Germany, which is north of Newfoundland.

Henceforth, over time, solar will likely slam the door shut on the 150-year ordeal with fossil fuel, which has drained hundreds of millions of years of decomposed plant and animal ooze as feedstock for a revolution, the industrial revolution, which unleashed a massive capitalistic heist of every resource imaginable, as well as politically undermining socio/economic progression/development of rugged individualism by a throwback to the day of serfs, peasants, villeins, servants, and yeomen… with a smattering of nobles. Sound complicated? It is, but on second thought, it really isn’t.

  1. Alison Banwell, et al., Breakup of the Larsen B Ice Shelf Triggered by Chain Reaction Drainage of Supraglacial Lakes, Geophysics Research Letters, 40, 5872-5876, DOI: 10.1002/2013GLO57694. []
  2. “Chain Reaction Shattered Huge Antarctica Ice Shelf,” Nature, August 9, 2013. []
  3. G. Durand, et al., “Retreat of Pine Island Glacier Controlled by Marine Ice-Sheet Instability,” Nature Climate Change, doi: 10.1038/nclimagte2094, Jan. 12, 2014. []
  4. Daniel Glick, “Signs From Earth: The Big Thaw,” National Geographic, June 2007. [] []
  5. Source: Bloomberg New Energy Finance. []

Robert Hunziker (MA in economic history at DePaul University, Chicago) is a former hedge fund manager and now a professional independent negotiator for worldwide commodity actual transactions and a freelance writer for progressive publications as well as business journals. He can be contacted at: rlhunziker@gmail.com. Read other articles by Robert.