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

Posts Tagged ‘Atmospeheric Deoxygenation’

“The source of half the World’s oxygen is in major peril.” The New Climate ”Normal”: Abrupt Sea Level Rise and Predictions of Civilization Collapse

In Uncategorized on August 21, 2015 at 3:40 pm
Helicopters drop water on the Blue Creek wildfire as it burns near Walla Walla, Wash., July 22, 2015. Officials warn about the potential for even more catastrophe in the months ahead, as drought, heat and climate change leave the landscape ever thirstier. (Ruth Fremson/The New York Times)

Helicopters drop water on the Blue Creek wildfire as it burns near Walla Walla, Washington, July 22, 2015. Officials warn about the potential for even more catastrophe in the months ahead, as drought, heat and climate change leave the landscape ever thirstier. (Ruth Fremson/The New York Times)

 

Oldspeak: “Earth Provides enough to satisfy every mans needs, but not every man’s greed.” -M. Gandhi.

“So, Yeah. That’s happening. Half of the world’s oxygen supply is quite probably GONE.  At some point in the not too distant future, air-breathing life on Earth will have half as much of it to inhale. Every day of business as usual, brings that point ever closer. Faster. Oh and Earth’s temperature is hot as Hades,  rainforests are burning, permafrost is rapidly melting, droughts are intensifying, freshwater is swiftly depleting (the San Joaquin Valley is sinking 2 inches A MONTH as a result of prolonged drought & unsustainable aquifer depletion and agricultural practice) seas are rising,  extinctions are accelerating, with pink salmon and polar bears on their way out, enjoy your romaine lettuce while you can;  you know, the ‘New Normal’.  Meanwhile Most Humans however, estranged as we are from our life-sustaining ecology are partying like it’s 1999. Destroying, extracting, heating, contaminating, consuming, emitting, polluting at the “Old Normal” pace. Behold! Human industrial civilization, the ultimate non-linear positive feedback loop! The end of the article was quite gallows humorous to me. A glaciologist, who has witnessed over an extended period the carnage being wrought in polar regions, knowing that we are on track for 4-5 degrees C of warming in the near to midterm future,  presumably knowing that ”on a planet 4 degrees C warmer all we can plan for is extinction“, spoke this fantastical absurdity: “In Denmark, we have the resilience, so I’m not that worried about my daughter’s livelihood going forward. But that doesn’t stop me from strategizing about how to safeguard her future – I’ve been looking at property in Greenland. As a possible bug-out scenario.” -Dr. Jason Box. As though it is possible to “bug out” of mass extinction. Sigh. Hopium abounds.  Enjoy Dahr Jamail’s latest postcard from the edge.” -OSJ

Written By Dahr Jamail @ Truthout:

We know things are a bit “off” when a rainforest is on fire.

Over 400 acres of the Queets Rainforest, located in Olympic National Park in Washington State, nearby where I live, have burned recently, and it is continuing to burn as I type this. Fires in these rainforests have historically been rare, as the area typically receives in excess of 200 inches of rain annually.

But this is all changing now.

The new normal is that there is no longer any “normal.”

The new normal regarding climate disruption is that, for the planet, today is better than tomorrow.

To see more stories like this, visit “Planet or Profit?”

Another perfect example of this is a crucial recent study led by James Hansen, the former director of NASA’s Goddard Institute for Space Studies. The study, authored by Hansen and more than a dozen other scientists and published online, warns that even staying within the internationally agreed goal of keeping the planet within the 2-degree Celsius temperature warming limit has already caused unstoppable melting in the Antarctic and Greenland ice sheets. The study shows that this will raise global sea levels by as much as 10 feet by the year 2050, inundating numerous major coastal cities with seawater.

The oceans and all marine life will be “irreversibly changed” unless there are immediate and dramatic cuts in carbon dioxide emissions.

As if that’s not enough, Hansen’s study comes on the heels of another study published in Science, which shows that global sea levels could rise by at least 20 feet, even if governments manage to keep global temperature increases to within the agreed upon “safe” limit of 2 degrees Celsius. The study warns that it is quite possible that 75 feet of sea level rise could well already be unstoppable given current carbon dioxide levels in the atmosphere and recent studies that show how rapidly Greenland and several Antarctic ice sheets are melting.

Disconcertingly, another new “normal” this month comes in the form of huge plumes of wildfire smoke over the Arctic. At the time of this writing, well over 12 million acres of forest and tundra in Canada and Alaska have burned in wildfires, and the smoke covering the Arctic sea ice is yet another anthropogenic climate disruption (ACD) amplifying feedback loop that will accelerate melting there. The additional smoke further warms the atmosphere that quickens the melting of the Arctic ice pack.

As if that’s not enough to keep you up at night, a recently published study by a team from Anglia Ruskin University’s Global Sustainability Institute has shown that society will likely collapse within 30 years, due to catastrophic food shortages resulting from the ever-worsening impacts of ACD.

“The results show that based on plausible climate trends, and a total failure to change course, the global food supply system would face catastrophic losses, and an unprecedented epidemic of food riots,” the Institute’s director, Dr. Aled Jones, told Insurge Intelligence. “In this scenario, global society essentially collapses as food production falls permanently short of consumption.”

Another shocking study, this one published in The Anthropocene Review, shows how humans are causing catastrophic shifts in planetary ecosystems that have been unprecedented for 500 million years. The study outlines how human actions have led to extinctions of plants and animals, and added that while “species extinctions and other changes are far more advanced” already, “[g]lobal warming as a phenomenon is just beginning.”

Bad news from scientific studies flowed abundantly this last month when it comes to the oceans, as well.

Another major report, this one published in Science, warns that the oceans and all marine life will be “irreversibly changed” unless there are immediate and dramatic cuts in carbon dioxide emissions – a scenario from the realm of fantasy, given the current political climate. The report states clearly that even the 2-degree Celsius “maximum allowable temperature” rise from ACD agreed upon by world governments “will not prevent dramatic impacts on global ocean systems.”

As if all this isn’t enough to impress upon you how rapidly ACD is progressing, 2014 was also confirmed as the hottest year ever recorded, both on land and in the oceans. That report was followed by another from the National Oceanic and Atmospheric Administration that showed that the first half of 2015 was, by far, the hottest ever recorded on the planet.

As this dispatch dives into greater detail about how the world is being changed dramatically, buckle up. The news does not get any easier to take in.

Earth

The impacts from ACD continue to take dramatic tolls on the earth’s species.

Researchers recently reported that warmer temperatures across both North America and Europe are leading to loss of habitat for bumblebees, which in turn is threatening their very survival.

In the UK, several species of birds are now under threat because temperature shifts are pushing several of the species further north, even all the way to Scandinavia. Once there, the birds encounter habitat they are not adapted to, and likely won’t survive.

Scientists in the United States with the US Geological Survey released a report that shows that polar bears will have a steep decline in their populations in most places in the Arctic as the sea ice melts away. This isn’t news, but the report shows how closely scientists are monitoring the situation, due to the speed at which the melting of the polar ice cap is occurring.

Humans are not immune to the growing impacts of ACD.

Another study published in Science shows that polar bears’ metabolism will not be able to adapt quickly enough to their dramatically changing habitat as the Arctic warms and melts. This, coupled with a dramatic decline in their sources of food, again confirmed that the iconic bears are most likely en route to extinction.

Of course, humans are not immune to the growing impacts of ACD.

A report produced by the University College of London’s commission on health and climate change along with the Lancet revealed that ACD threatens to erode five decades of overall progress in global human health.

Professor Anthony Costello, director of the UCL Institute of Global Health and co-chair of the commission, told the Guardian that on our current trajectory of warming, we are going to see “very serious and potentially catastrophic effects for human health and human survival.

“We see that as a medical emergency because the action we need to do to stop that in its tracks and get us back onto a 2C trajectory or less requires action now – and action in the next 10 years – otherwise the game could be over,” he added.

For the earth itself, ACD is even leading to geo-structural changes.

In Greenland, massive earthquakes are resulting from melting glaciers, and icebergs calving from tidal glaciers collapsing into the ocean are causing consistent quakes of magnitude 4-5.2, with most of them closer to 5, according to a recent study published in Science. The calving glaciers are also causing tsunamis.

Water

As usual, the impacts of ACD are most dramatic on the waterfront.

A recent report revealed that all of the world’s sea turtles are at risk, due to rising sea levels. Higher sea levels mean their rookery sites, where their babies hatch, are becoming submerged.

Equally distressing, the entire pink salmon population in the Pacific Ocean is at risk, as they are being subjected to a double impact: the acidification of their ocean habitats, coupled with the acidification of rivers, slowing their growth and killing them off there as well.

Speaking of salmon, in Oregon, salmon must be trucked north hundreds of miles to a hatchery in Washington State, in a desperate effort to save fish that have been dying off in the tens of thousands due to increasingly warming river waters.

We know there is trouble when we are having to truck fish north in an effort to keep them alive; needless to say, this is not a sustainable activity.

A group of scientists from the Marine Conservation Institute recently announced that deep-sea coral reefs off the coast of Australia could be dead within 50 years due to warming temperatures and ocean acidification.

A series of recent studies has recently confirmed that ACD’s impacts on the oceans, including warming temperatures and acidification of the waters, is causing global seafood supplies to diminish drastically.

Plankton, the basis of the entire food chain, are threatened by ocean acidification.

More bad news for the planets’ oceans comes from a recent study that shows that plankton, the basis of the entire food chain, are threatened by ocean acidification. Some species of plankton will die out, while others will flourish, creating an imbalance that the report’s authors say will be “a big problem,” given that plankton produce half the total oxygen supply for the planet.

Pause for a moment before reading further and ponder the implications of that: The source of half the world’s oxygen is in major peril.

Droughts around the planet continue to abound.

Chile is facing its driest year to date, since record keeping began. There has been little to no snow on any of its famous ski slopes, and the lack of rainfall has worsened the already bad pollution problem in the country’s capital city.

In Canada, several counties in the province of Alberta announced in July that they were seriously considering declaring themselves in a state of agricultural disaster due to severe drought. It’s one of the worst drought’s in Alberta’s history, and one farmer said, “It’s almost get¬ting at the point rain wouldn’t help much.”

In addition to the important report on sea level rise mentioned at the beginning of this article, the Guardian recently posted a video that investigates the question of whether Filipinos will have to abandon Manila due to rising sea levels. Manila has a population of roughly 2 million people.

Needless to say, glaciers and ice sheets around the world continue to melt at breakneck speeds.

The impacts of warmer ocean temperatures “will be felt for centuries to come.”

NASA recently released a report showing that in Turkey, more than half of the ice cover in the mountainous regions has vanished since the 1970s. A map in the NASA report shows five areas in Turkey’s mountains where 100 percent of the glaciers have disappeared, and three areas where 75 percent of them are gone.

Another study released in July revealed another factor that is causing the Arctic to melt at a pace far faster than believed possible: Warm, tropical air masses are speeding up Greenland’s melting by warming Arctic air, as well as causing warmer rains to fall over the ice sheets.

Another NASA study found that the melting of Alaskan glaciers is now estimated to be one of the current largest contributors to global sea level increases. Maps in the study show dramatic changes to Alaska’s glaciers between 1994 and 2013, revealing a precipitous decline in their total mass. NASA estimates that the region lost approximately 75 billion tons of ice per year over that 19-year period, which is equivalent to around 30 percent of the amount of ice lost each year from the Greenland ice sheet.

Lastly, climate scientists affiliated with the US government announced recently that the warming of the oceans due to ACD is now unstoppable, and will continue to bring additional sea level rise, acidification and increasing global temperatures. Their report added that the impacts of the warmer ocean temperatures “will be felt for centuries to come” – even if immediate efforts are made to cut global carbon dioxide emissions.

Fire

In Canada, wildfires that have been described as “unprecedented” have forced more than 13,000 residents of Saskatchewan from their homes (a record evacuation), with wildfire-driven evacuations happening across other provinces as well.

The town of Whistler, Canada, famous for its world-class ski resort, is dealing with horrible air quality as smoke from wildfires is polluting the air across British Columbia.

NASA recently released disturbing images of smoke from the Alaskan and Canadian wildfires that is blowing out over the Greenland Sea.

Wildfires are ravaging parts of Southern California where the megadrought is cutting deep. The fire season started earlier than “normal” this year, and was helped along by massive numbers of dead trees brought to their demise by the increasing bark beetle infestation. That infestation was fueled by warmer temperatures as well as the drought itself. Hence several runaway feedback loops are feeding off one another.

A recently released study shows, again, how ACD has caused wildfire seasons around the globe to begin earlier and last later, shifting what “normal” means in the realm of fire.

Air

Heat records on three continents fell this last month, as brutally hot conditions in early July baked parts of Europe, Asia and South America. Dozens of heat records were broken: Maastricht, the Netherlands, saw 100.8 degrees Fahrenheit, an all-time July heat record for that nation, along with several other heat records throughout the country. London’s Heathrow Airport saw 98.1 degrees Fahrenheit, an all-time heat record for the UK.

In Thailand, Kamalasai saw 105.8 degrees, the hottest temperature ever recorded for that country, while other heat records across the nation were set as well. In Pakistan, morgues literally ran out of space as a heat wave there killed more than 1,000 people.

In South America, Urumita, Colombia, reached 108 degrees Fahrenheit, setting an all-time high for that country.

Heat records across the United States continue to be broken as well, including in Seattle, which has seen several record temperatures this summer, with possibly more to come.

A recent study has linked Hurricane Sandy and other extreme weather events around the globe to ACD. The study, published in Nature Climate Change, shows how ACD is ramping up extreme weather events, both in frequency and intensity, to never-before-seen levels.

Denial and Reality

Regarding ACD, news on the denial front never runs dry.

It emerged recently that Exxon was aware of ACD as far back as 1981, but continued to deliberately fund climate change deniers nonetheless … and has gone on to spend millions of dollars since then to continue to do so, to this day.

The US House of Representatives, in another stroke of genius, passed a bill that allows state governors to refuse to comply with the Environmental Protection Agency’s Clean Power Plan, developed to lower carbon dioxide emissions from currently active power plants.

Elected politicians acting on behalf of Big Oil and Gas are functioning as little more than lobbyists for said industries, despite what’s at stake (the planet and human existence).

On the reality front, to counter these amazing acts of denial, Pope Francis continues to fight the good fight as far as ACD goes. Thousands of religious leaders recently marched in Rome in support of his call to world leaders to take a stand and work to mitigate the impacts of ACD.

On that note, more than a dozen Catholic organizations have launched a campaign that is asking Catholics around the world to change their lives in order to reduce their carbon dioxide emissions and lower their consumption.

A recent study has shown, again, that ACD has made deadly floods and record heat waves over the last month even worse, and will continue to make other extreme weather events more intense, as well as more frequent.

“We need the deniers to get out of the way. They are risking everyone’s future.”

Lastly, an excellent article in Esquire about Dr. Jason Box provides a glimpse into the dilemma climate scientists face in regards to the intensely troubling information their research is producing and the emotions elicited by it, coupled with the pressures they face politically. Box, a world-renowned glaciologist whose focus is the Greenland ice sheet, has not been shy about expressing his opinions, and sometimes emotions, about what he is seeing.

Box has said things like: “If even a small fraction of Arctic sea floor carbon is released to the atmosphere, we’re fucked,” and concluded that a 70-foot rise in sea levels over the next few centuries was probably already “baked into the system.” After these and other similar statements, he has come under intense fire from both the scientific community and – of course – the deniers.

Box, a US citizen, had already taken his family and moved to Denmark, where he works while continuing his cutting-edge studies on the Greenland ice sheet, largely due to the ongoing attacks he withstood from the oil-and-gas-funded deniers in the United States.

“We need the deniers to get out of the way. They are risking everyone’s future,” Box told Esquire. “The Koch brothers are criminals…. They should be charged with criminal activity because they’re putting the profits of their business ahead of the livelihoods of millions of people, and even life on earth.”

Box thinks there is at least a 50 percent probability that the world is already on track to go well over the 2-degree Celsius politically accepted maximum limit of global warming, and agrees with most climate scientists that we are on a trajectory toward more like 4-5-degree Celsius warming in the near to mid-term future.

When asked what amount of warming would throw Greenland into irreversible ice loss, Box answered “between two and three degrees.”

When Greenland goes, that is enough sea level rise to destroy every coastal city on the planet. Speaking of Antarctica, Box said: “Abrupt sea level rise is upon us.”

“The forests are dying, and they will not return,” he told Esquire about his home state of Colorado. “The trees won’t return to a warming climate. We’re going to see megafires even more, that’ll be the new one – megafires until those forests are cleared.”

Meanwhile, he has adjusted his life to minimize his carbon footprint, and continues his work in Greenland, but is worried about his daughter’s future. Box’s view of the disrupted climactic future is scary enough; he is thinking about survival.

“In Denmark, we have the resilience, so I’m not that worried about my daughter’s livelihood going forward,” he said. “But that doesn’t stop me from strategizing about how to safeguard her future – I’ve been looking at property in Greenland. As a possible bug-out scenario.”

Warming Oceans Speeding Up Cycle of Climate Change

In Uncategorized on January 13, 2015 at 12:09 am
https://i0.wp.com/www.truthdig.com/images/eartothegrounduploads/CROP-Arctic_ice_floe.jpg

Sun on the water, as Arctic ice increasingly melts, is part of the “positive feedback” process warming the oceans and reducing CO2 storage. Photo by Paul Gierszewski via Wikimedia Commons

 

Oldspeak: “Yep. The worlds oceans are locked into an irreversible non-linear positive feedback loop. It is accelerating. As the oceans warm, their ability to sequester CO2 diminishes and more and more of the potent greenhouse gas methane bubbles towards the surface as the deep water begins to warm. Human actions cannot reverse or decrease what has been started. These are observable, ongoing, and ever increasing impacts. They will continue to worsen. As time passes the changes will become impossible to ignore. We would do well to acknowledge and accept our fate. Only the Love remains…” -OSJ

By Tim Radford @ Climate News Network:

LONDON—The warming oceans could start to return more carbon dioxide to the atmosphere as the planet warms, according to new research.

And since 70% of the planet is covered by clear blue water, anything that reduces the oceans’ capacity to soak up and sequester carbon could only make climate change more certain and more swift.

It is a process that engineers call “positive feedback”. And under such a cycle of feedback, the world will continue to get even warmer, accelerating the process yet again.

Many such studies are, in essence, computer simulations. But Chris Marsay—a marine biochemist at the UK’s National Oceanography Centre in Southampton—and colleagues based their results on experiments at sea.

Sediment traps

They report in the Proceedings of the National Academy of Sciences that they examined sediment traps in the North Atlantic to work out what happens to organic carbon—the tissue of the living things that exploit photosynthesis, directly or indirectly, to convert carbon dioxide—as it sinks to the depths.

Sooner or later, much of this stuff gets released into the sea water as carbon dioxide. This is sometimes called the ocean’s biological carbon pump. In deep, cold waters, the process is slow. In warmer, shallower waters, it accelerates.

And as there is evidence that the ocean is responding to atmospheric changes in temperature, both at the surface and at depth, the study suggests that “predicted future increases in ocean temperatures will result in reduced CO2 storage by the oceans”.

The research was conducted on a small scale, in a limited stretch of ocean, so the conclusion is still provisional—and, like all good science, will be confirmed by replication. But it is yet another instance of the self-sustaining momentum of global warming.

Such positive feedbacks are already at work in high latitudes. Ice reflects sunlight, and therefore the sun’s heat. So as the Arctic ice sheet steadily diminishes over the decades, more and more blue water is available to absorb heat—and accelerate warming.

“The world is at a crossroads in terms of climate health and climate change”

The same gradual warming has started to release another greenhouse gas trapped at the ocean’s edge. Natural “marsh gas”, or methane, is stored in huge masses, “frozen” as methane hydrate in cold continental shelves.

Methane exists in much smaller quantities than carbon dioxide, and has a shorter life in the atmosphere, but is far more potent, volume for volume, as a greenhouse gas.

Researchers at the Arctic University of Norway in Tromso reported last month in Geophysical Research Letters that once-frozen methane gas was leaking from thawing ocean floor off Siberia. Some of this thaw is natural, and perhaps inevitable. But some is connected with human influence and could accelerate.

Alexei Portnov, a geophysicists at the university’s Centre for Arctic Gas Hydrate, Climate and Environment  says: “If the temperature of the oceans increases by two degrees, as suggested by some reports, it will accelerate the thawing to the extreme. A warming climate could lead to an explosive gas release from the shallow areas.”

Biological origin

Arctic methane, like ocean organic carbon, has a biological origin. It is released by decaying vegetation under marshy conditions and tends to form as a kind of ice at low temperatures and high pressures, much of it along continental shelves that, at the height of the Ice Ages, were above sea level.

The International Union for Conservation of Nature also reminded the world last month that the ocean plays a vital role in climate, and that plankton, fish and crustaceans could be considered as “mobile carbon units”.

In this sense, the fish in the sea are not just suppers waiting to be caught, but are important parts of the planetary climate system. The healthier the oceans, and the richer they are in living things, the more effective they become at soaking up atmospheric carbon.

“The world is at a crossroads in terms of climate health and climate change,” said Dan Laffoley, vice-chairman of the IUCN World Commission on Protected Areas, introducing a new report on the marine role in the carbon cycle.

“Neglect the ocean and wonder why our actions are not effective, or manage and restore the ocean to boost food security and reduce the impact of climate change. The choice should be an easy one.”

 

U.N. Weather Agency: “We need to act now… time is not on our side.”- Atmospheric Greenhouse Gas Concentrations At Record High. Again.

In Uncategorized on November 12, 2013 at 1:18 pm

By absorbing much of the added heat trapped by atmospheric greenhouse gases, the oceans are delaying some of the impacts of climate change. Photo: WMO/Olga Khoroshunova

Oldspeak: “Heat-trapping gases from human activities have upset the natural balance of our atmosphere and are a major contribution to climate change… Our climate is changing, our weather is more extreme, ice sheets and glaciers are melting and sea levels are rising.  We need to act now, otherwise we will jeopardise the future of our children, grandchildren and many future generations. Time is not on our side.-WMO Secretary-General Michel Jarraud.

“Translation: “We’re fucked. But our children and grandchildren are exponentially more fucked. ” No one in positions of power anywhere in the 1st world “advanced” nations  is interested in acting now. They’re interested in “extend and pretend”. “Delay and Pray.” They meet at ineffectual climate conferences to negotiate  incremental decades long rates of change, not the radical, revolutionary change necessary right now. There is no implementable global response to the existential threats that our current carbon-nuclear based systems are creating.  There’s no profit in it. The profit is in tar sands. Methane (a.k.a. “Natural”) gas. Coal.  Efforts are underway to expand their extraction and exploitation in previously inaccessible areas of the planet.  These systems require our destruction for its continued sustenance. We are hurtling headlong toward global ecological collapse.  So, enjoy what tolerable time we have left on this dying world, as in short order, life on earth will be come fully intolerable.  Expect the worst, because it’s coming. Sandy & Haiyan are just a primer. Our infinite growth based civilization incontrovertibly assure our destruction.” -OSJ

 

By U.N. News Center:

The amount of greenhouse gases in the atmosphere reached a record high in 2012, continuing an upward trend which is driving climate change and which will shape the future of the planet for hundreds and thousands of years, according to the United Nations World Meteorological Organization (WMO).

The agency’s annual Greenhouse Gas Bulletin shows that between 1990 and 2012, there was a 32 per cent increase in radiative forcing – the warming effect on the climate – because of carbon dioxide (CO2) and other heat-trapping long-lived gases such as methane and nitrous oxide.

Carbon dioxide, mainly from fossil fuel-related emissions, accounted for 80 per cent of this increase, WMO stated in a news release. The atmospheric increase of CO2 from 2011 to 2012 was higher than its average growth rate over the past 10 years.

What is happening in the atmosphere, said the Geneva-based WMO, is “one part of a much wider picture.” Only about half of the CO2 emitted by human activities remains in the atmosphere, with the rest being absorbed in the biosphere and in the oceans.

The latest findings “highlight yet again how heat-trapping gases from human activities have upset the natural balance of our atmosphere and are a major contribution to climate change,” said WMO Secretary-General Michel Jarraud.

He recalled that the UN-backed Intergovernmental Panel on Climate Change (IPCC) stressed in its recent Fifth Assessment Report that atmospheric concentrations of carbon dioxide, methane, and nitrous oxide have increased to levels unprecedented in at least the last 800,000 years.

“As a result of this, our climate is changing, our weather is more extreme, ice sheets and glaciers are melting and sea levels are rising,” said Mr. Jarraud.

He underscored that limiting climate change will require large and sustained reductions of greenhouse gas emissions. “We need to act now, otherwise we will jeopardize the future of our children, grandchildren and many future generations,” said Mr. Jarraud. “Time is not on our side,” he added.

The Greenhouse Gas Bulletin reports on atmospheric concentrations – and not emissions – of greenhouse gases. Emissions represent what goes into the atmosphere, the agency pointed out. Concentrations represent what remains in the atmosphere after the complex system of interactions between the atmosphere, biosphere and the oceans.

At the same time, the Emissions Gap Report 2013, involving 44 scientific groups coordinated by the UN Environment Programme (UNEP), urges wide-ranging global action to close the emissions gap.

If the international community fails to take action, the report warned, the chances of remaining on the least-cost path to keeping global temperature rise below 2 degrees Celsius this century will quickly diminish and open the door to a range of challenges.

Under the UN Framework Convention on Climate Change (UNFCCC), governments have agreed to limit the global temperature rise to 2 degrees Celsius to avoid the worst impacts of climate change.

The report, which was released yesterday as leaders prepare to meet for the upcoming UN Climate Change Conference in Warsaw, finds that although pathways exist that could reach the 2-degree Celsius target with higher emissions, not narrowing the gap will exacerbate mitigation challenges after 2020.

This will mean much higher rates of global emission reductions in the medium term; greater lock-in of carbon-intensive infrastructure; greater dependence on often unproven technologies in the medium term; greater costs of mitigation in the medium and long term; and greater risks of failing to meet the 2-degree Celsius target.

“As the report highlights, delayed actions mean a higher rate of climate change in the near term and likely more near-term climate impacts, as well as the continued use of carbon-intensive and energy-intensive infrastructure,” said UNEP Executive Director Achim Steiner.

“This ‘lock-in’ would slow down the introduction of climate-friendly technologies and narrow the developmental choices that would place the global community on the path to a sustainable, green future.

“However,” he added, “the stepping stone of the 2020 target can still be achieved by strengthening current pledges and by further action, including scaling up international cooperation initiatives in areas such as energy efficiency, fossil fuel subsidy reform and renewable energy.”

 

 

Last Hours of Humanity: Warming the World to Extinction

In Uncategorized on October 13, 2013 at 6:12 pm

(Image: <a href=" http://www.shutterstock.com/pic-106825397/stock-photo-refinery-with-smoke-and-global-warming-concept.html?src=NbITD5enX9lI4lerT943VQ-1-0"> via Shutterstock </a>)

Oldspeak:Will several centuries of burning fossil fuels release enough carbon into the atmosphere to mimic the effects of past volcanic and asteroid activity and provoke a mass extinction?

If our burning fossil fuels warms the oceans enough that that methane melts and is quickly released into the atmosphere, the Earth will be in its sixth mass extinction.

And make no mistake about it, the animals and plants that are most heavily hit by mass extinctions are those that are largest and at the top of the food chain.

That means us.

We must stop the carbon madness and move, worldwide, to renewable 21st century energy sources.” –Thom Hartmann

“The grim reality is, we’re ALREADY in earth’s sixth mass extinction. We’re witnessing its beginning. We’re losing 200 species PER  DAY. irreversible positive feedbacks have already begun.  Accelerated ocean acidification/warming/deoxygenation/mass extinctions , massive increases in methane releases globally  and permafrost melt have methane levels in the arctic higher than they’ve been in 400,000 years.  Phytoplankton, the organisms crucial to all life on earth, producers of half the worlds oxygen and sequestering carbon have decreased 40% since 1950. And there are no serious efforts to stop the extractive energy systems that are creating  these catastrophic positive feedbacks, in fact these systems are being EXPANDED.  The show is going on, whether we want to see it or not.” -OSJ

By Thom Hartmann @ Truthout:

If you were standing outdoors looking at the distant and reddening sky 250 million years ago as the Permian Mass Extinction was beginning, unless you were in the region that is known as Siberia you would have no idea that a tipping point had just been passed and soon 95% of all life on earth would be dead.

It’s almost impossible to identify tipping points, except in retrospect.

For example, we have almost certainly already past the tipping point to an ice-free Arctic. And we are just now realizing it, even though that tipping point was probably passed a decade or more ago.

This is critically important because in the history of our planet there have been five times when more than half of all life on Earth died. They’re referred to as “mass extinctions.”

One – the one that killed the dinosaurs – was initiated by a meteorite striking the Earth. The rest all appear to have been initiated by tectonic and volcanic activity.

In each case, however, what happened was that massive amounts of carbon-containing greenhouse gases – principally carbon dioxide, were released from beneath the Earth’s crust and up into the atmosphere.

This provoked global warming intense enough to melt billions of tons of frozen methane on the oceans floors. That pulse of methane – an intense greenhouse gas – then brought the extinction to its full of intensity.

While in the past it took continental movement or an asteroid to break up the crust of the earth enough to release ancient stores of carbon into the atmosphere, we humans have been doing this very aggressively for the past 150 years by drilling and mining fossil fuels.

So the question:

Will several centuries of burning fossil fuels release enough carbon into the atmosphere to mimic the effects of past volcanic and asteroid activity and provoke a mass extinction?

Geologists who study mass extinctions are becoming concerned. As more and more research is coming out about the massive stores of methane in the Arctic and around continental shelves, climate scientists are beginning to take notice, too.

The fossil fuel companies are sitting on roughly 2 trillion tons of underground carbon. That, in and of itself, is enough to warm the earth by 5 or 6°C, and is an amount of carbon consistent with tipping points during past mass extinctions.

There are an additional estimated 2 trillion tons of methane stored in the Arctic and probably 2 to 5 times that much around continental shelves all around the Earth.

If our burning fossil fuels warms the oceans enough that that methane melts and is quickly released into the atmosphere, the Earth will be in its sixth mass extinction.

And make no mistake about it, the animals and plants that are most heavily hit by mass extinctions are those that are largest and at the top of the food chain.

That means us.

We must stop the carbon madness and move, worldwide, to renewable 21st century energy sources.

This is why we’ve produced a short documentary on this topic, and a short e-book titled The Last Hours of Humanity: Warming the World to Extinction that you can find at www.lasthours.org.

Please check it out and share it with as many friends as possible.

The future of humanity is at stake.