climate change

Tue, 2014-05-13 11:14Chris Rose
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Scientists Fear Massive Sea Level Rise from "Unstoppable" Melt of West Antarctica Ice Sheet

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Two new academic studies released Monday reveal that the crucial West Antarctic ice sheet is now melting, a seemingly unstoppable disaster that could eventually trigger sea levels to rise by more than 14 feet (4.3 metres).

The studies could finally make politicians rethink how climate change is affecting humankind and how society is going to deal with the increasingly expensive cost of mitigating climate change caused by burning fossil fuels overheating our atmosphere.

One of the studies indicates the glaciers in the Amundsen Sea sector of West Antarctica “have passed the point of no return,” according to glaciologist and lead author Eric Rignot, of UC Irvine and NASA’s Jet Propulsion Laboratory in California. The new study has been accepted for publication in the journal Geophysical Research Letters.

NASA says the glaciers already contribute significantly to sea level rise, releasing almost as much ice into the ocean annually as the entire Greenland ice sheet. “They contain enough ice to raise global sea level by four feet (1.2 metres) and are melting faster than most scientists had expected,” according to a press release.

Sat, 2014-05-10 09:07Chris Rose
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New Study Links California Drought to Climate Change and Burning of Fossil Fuels

California, widely considered the U.S. state that most promoted the American Dream, may turn into a nightmare this summer as a result of the worst drought in at least 15 years.

And a new academic study suggests there may be a direct connection between the persistent drought and climate change caused by burning fossil fuels.

The study shows that, beginning with unusually cold waters off Southeast Asia, a persistent high-pressure ridge, or dipole, built up late last year and anchored over the Gulf of Alaska, preventing usual levels of moisture from reaching the West Coast of North America.

Reviewing weather data and sea surface temperatures, the study also determined that the dipole generated a low-pressure ridge built up north of the Great Lakes, eventually resulting in so-called freezing Polar Vortex events in central Canada and the U.S.

Thu, 2014-05-08 18:01Ben Jervey
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Climate Change is Clear and Present Danger That The Fossil Fuel Industry Would Like You To Ignore

Climate change is no longer a distant threat, but a clear and present danger. That’s the main takeaway from the third installment of the National Climate Assessment (NCA), released this week by the White House.

The report itself is a feat of both exhaustive climate science and creative science communications. The 840-page document is packed with illustrative graphics, and the web-based version features interactivity and video. Beyond painting the national picture, the NCA presents, in the words of White House science advisor John Holdren, “unprecedented detail about regional impacts” of climate change.

Climate change is not a distant threat, but is affecting the American people already,” says Holdren in a video introducing the report. “Summers are longer and hotter, with longer periods of extended heat. Wildfires start earlier in the spring and continue later into the fall. Rain comes down in heavier downpours. People are experiencing changes in the length and severity of allergies. And climate disruptions to water resources and agriculture have been increasing.”

Some quick background: The U.S. Global Change Research Program was formed by Congressional mandate in 1990, and charged with producing regular “National Climate Assessments” in order to “highlight key knowledge that can improve policy choices and identify significant gaps that can limit effective decision making.” The NCA reports are compiled by a 60-member federal advisory committee made up some scientists, business leaders, and other climate experts, and the content itself is written by nearly 300 scientists, academics, government and private sector experts. The document itself is subjected to exhaustive review, including by the National Academy of Sciences. And as a consensus-based document, the findings must be approved by representatives of such disparate parties as environmental groups and fossil fuel companies. If anything, this report is conservative in its findings.

Thu, 2014-05-08 08:10Carol Linnitt
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New Report Names Alberta Oilsands as Highest Cost, Highest Risk Investment in Oil Sector

A total of $1.1 trillion USD earmarked for risky carbon-intensive oil sector investments need to be challenged by investors, according to a new report released today by the Carbon Tracker Initiative.

The research identifies oil reserves in the Arctic, oilsands and in deepwater deposits at the high end of the carbon/capital cost curve. Projects in this category “make neither economic nor climate sense” and won’t fit into a carbon-constrained world looking to limit oil-related emissions, Carbon Tracker states in a press release.

The report highlights the high risk of Alberta oilsands investment, noting the reserves “remain the prime candidate for avoiding high cost projects” due to the region’s landlocked position and limited access to market.

The isolated nature of the [oilsands] market with uncertainty over export routes and cost inflation brings risk.”

Wed, 2014-05-07 13:52Chris Rose
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Climate Change "Has Moved Firmly into the Present," Latest NCA Federal Report States

Climate change is already negatively affecting every region in the United States and the future looks even more dismal if coordinated mitigation and adaptation efforts are not immediately aggressively pursued, according to the third U.S. National Climate Assessment report released Tuesday.

Climate change, once considered an issue for a distant future, has moved firmly into the present,” notes the massive NCA report.

Corn producers in Iowa, oyster growers in Washington State, and maple syrup producers in Vermont are all observing climate-related changes that are outside of recent experience. So, too, are coastal planners in Florida, water managers in the arid Southwest, city dwellers from Phoenix to New York, and Native Peoples on tribal lands from Louisiana to Alaska.”

The report adds evidence of human-induced climate change continues to strengthen and that impacts are increasing across the nation. The report says Americans are already noticing the results of climate change, from longer and hotter summers to shorter and warmer winters. Rain falls in heavier downpours, there is more flooding, earlier snow melt, more severe wildfires and less summer sea ice in the Arctic.

Thu, 2014-05-01 12:06Steve Horn
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Gulf Stream: Williams Suspends Bluegrass Gas Export Pipeline, Announces New Export Line

Right before the champagne bottles began popping for activists engaged in a grassroots struggle to halt the construction of Williams Companies' prospective Bluegrass Pipeline project — which the company suspended indefinitely in an April 28 press release — Williams had already begun raining on the parade.

The pipeline industry giant took out the trash on Friday, April 25, announcing its intentions to open a new Louisiana pipeline named Gulf Trace.

Akin to TransCanada's ANR Pipeline recently reported on by DeSmogBlog, Gulf Trace is not entirely “new,” per se. Rather, it's the retooling of a pipeline system already in place, in this case Williams' Transco Pipeline system

The retooling has taken place in the aftermath of Cheniere's Sabine Pass LNG export facility receiving the first ever final gas export permit from the U.S. Federal Energy Regulatory Commission (FERC) during the fracking era.

Williams' Transco Pipeline System; Photo Credit: William Huston

Both ANR and Gulf Trace will feed into Sabine Pass, the Louisiana-based LNG export terminal set to open for business in late 2015Also like ANR, Transco will transform into a gas pipeline flowing in both directions, “bidirectional” in industry lingo.

Bluegrass, if ever built, also would transport fracked gas to the Gulf Coast export markets. But instead of LNG, Bluegrass is a natural gas liquids pipeline (NGL)

“The project…is designed to connect [NGLs] produced in the Marcellus-Utica areas in the U.S. Northeast with domestic and export markets in the U.S. Gulf Coast,” it explained in an April 28 press release announcing the project's suspension. 

Mon, 2014-04-28 16:59Steve Horn
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Mayflower: Deadly Tornado Sweeps Through Arkansas Town That Endured ExxonMobil Tar Sands Pipeline Spill in 2013

On March 29, 2013, ExxonMobil's Pegasus tar sands pipeline ruptured in Mayflower, Arkansas, sending hundreds of thousands of gallons of diluted bitumen (“dilbit”) pouring down the town's streets.

Now, just over a year after the massive spill, devastation has come to Mayflower and neighboring towns again, this time in the form of a lethal tornado. On the evening of April 27, the twister destroyed huge pockets of the town of just over 2,300 citizens in a wholesale manner, with 14 confirmed dead and likely many more still not counted.

“Sadly, we don't expect it to stay at 14,” tweeted Arkansas Governor Mike Beebe. At least 10 died in Faulkner County alone, which houses Mayflower, according to the Arkansas Department of Emergency Management.

The National Weather Service in Little Rock has given the tornado that hit Mayflower an EF-3 rating on a preliminary basis. EF3 (the highest rating is an EF5) equates to 136–165 mile per hour winds and KATV weatherman Todd Yakoubian tweeted that National Weather Service will have its final rating in by April 30.

Table Credit: Wikimedia Commons

On the whole, Arkansas Geographic Information Office has reported that 3,200 addresses in Faulkner County have had various levels of impact.

Wed, 2014-04-23 20:00Guest
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Only With Political Will Can We Avoid The Worst Of Climate Change

This is a guest post by David Suzuki.

It’s fitting that the latest Intergovernmental Panel on Climate Change report was released during Earth Month. After all, the third chapter of its Fifth Assessment focuses on ways to keep our planet healthy and livable by warding off extreme climatic shifts and weather events caused by escalating atmospheric carbon.

Doing so will require substantially reducing greenhouse gas emissions – 40 to 70 per cent by 2050 and to near-zero by the end of the century. We must also protect carbon “sinks” such as forests and wetlands and find ways to store or bury carbon. The good news is that weaning ourselves off fossil fuels, conserving energy and shifting to cleaner sources comes with economic and quality-of-life benefits.

There is a clear message from science: To avoid dangerous interference with the climate system, we need to move away from business as usual,” said economist Ottmar Edenhofer, co-chair of Working Group III, which produced the chapter.

Doing nothing isn’t an option. That would lead to a significant increase in global average temperatures and extreme weather-related events such as storms, droughts and floods, wreaking havoc on our food systems, communities and the natural environment we depend on for our health and survival. Technological measures and behavioural change could limit global mean temperatures to less than 2 C above pre-industrial levels, but only with “major institutional and technological change.”

Because we’ve stalled so long, thanks largely to deceptive campaigns run by a small but powerful group of entrenched fossil fuel industry interests and the intransigence of some short-sighted governments, we must also consider ways to adapt to climate change that’s already occurring and that we can’t stop.

Tue, 2014-04-22 11:50Julie Dermansky
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In Celebration of Earth Day: Photos Capture the Beauty of Southeastern Louisiana's Wetlands

Louisiana's wetlands are threatened by coastal erosion, climate change and the oil and gas industry.

The Green Army, a group representing environmental and social justice organizations led by retired Lt. Gen. Russel Honore is trying to stop bills they believe stand in the way of preserving Louisiana's disappearing coast, including bills that would kill the lawsuit filed by the Southeast Louisiana Flood Protection Authority-East that would require 97 oil and gas companies to pay for their share of the damage the industry has done to the coast.

Governor Bobby Jindal has pushed to derail the lawsuit by backing legislation that is undermining the levee board. So far the Green Army has not been able to sway the legislators from dismantling the lawsuit that many believe could save the coast.

Many of the bills set to derail the lawsuit have already passed in the Senate but Michael Orr, operations coordinator of Louisiana Environmental Action Network (LEAN) points out they haven't been heard in the House yet.  “There is still a chance to kill them” he told DeSmogBlog.  “I feel the battle is RE-enfranchising the public to believe that things can change, that we can win and that they can make a difference. And honestly I do feel like we can win this. And we surely cannot afford to lose. ” Orr says. 

Here is a slideshow celebrating the richness of the coastal wetland environment.

Wed, 2014-04-16 16:51Mike Gaworecki
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New Study Shows Link Between Climate Change And California Drought

A study published by Geophysical Research Letters sheds new light on the connection between California's epic drought and human-induced climate change.

The study carries the decidedly wonky title, “Probable causes of the abnormal ridge accompanying the 2013-14 California drought: ENSO precursor and anthropogenic warming footprint.”

A subscription is required to read the full thing, but you can read the abstract, which concludes that “there is a traceable anthropogenic warming footprint in the enormous intensity of the anomalous ridge during winter 2013-14, the associated drought and its intensity.”

As the accompanying news release makes clear, this new research not only helps explain how global warming has intensified the drought in the Golden State, but also its role in the record-breaking cold weather that has hit the East Coast. But it's the climate-drought connection that is under the most scrutiny.

Essentially, an “anomalous high-amplitude ridge system,” or a ridge of exceptionally high atmospheric pressure, has contributed to what's known as a “dipole” — in this case, the two poles of the dipole being the high pressure in the Western U.S. and the low pressure in the East.

The researchers, from Utah State University, have “uncovered evidence that can trace the amplification of the dipole to human influences.” They go on to state that “it is important to note that the dipole is projected to intensify, which means more extreme future droughts for California.”

Not everyone accepts the connection between manmade climate change and the Cali drought. To wit, this study is likely to provoke another round in the very public debate between University of Colorado political scientist Roger Pielke, Jr. and Obama Administration Science Advisor Dr. John Holdren.

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