ApocaDocuments (7) matching "global warming" from this week
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Sat, Feb 21, 2009
from San Francisco Chronicle:
Investors put Chevron on 'climate watch'
A group of activist investors, including the giant California State Teachers' Retirement System, on Wednesday placed Chevron Corp. and eight other companies on a "climate watch list" of corporations that aren't adequately addressing global warming. The investors want the companies to pay more attention to how their operations are affecting, and will be affected by, climate change.
The investors placed San Ramon's Chevron on the list because of its investments in Canadian oil sands. Squeezing petroleum from the sand releases more greenhouse gas emissions than ordinary oil production does.
A Chevron spokesman on Wednesday did not address the sand issue but noted that Chevron has its own climate change action plan and has a subsidiary that promotes energy efficiency and renewable power. ...
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Money talks.
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Sat, Feb 21, 2009
from Cleveland Plain Dealer:
January was seventh-warmest on Earth, climate scientists say
This may not play well in Northeast Ohio, but federal climate officials this week reported that planet Earth just had its seventh-warmest January in more than 125 years of records.
That's right, even though Cleveland just finished 6.5 degrees colder than normal (remember that 13-below-zero day?), most of the rest of the world got hotter last month -- including Australia, where records were broken with one 114-degree day.
The most recent report from the National Climatic Data Center in North Carolina asserts that the combined global land and ocean surface temperature for January was 54.55 degrees Fahrenheit -- or 0.95 degrees above the 20th-century average temperature. ...
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Unless Cleveland wants a bunch of enviro-refugees coming to town, they probably should keep this quiet...
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Sat, Feb 21, 2009
from Science:
Arctic Coastal Erosion Doubles in 50 Years
As if record-breaking losses of sea ice and thawing permafrost weren't enough, climate change is also sweeping parts of the Arctic out to sea. New research in Geophysical Research Letters reports that the rate of erosion along a stretch of Alaska's northeastern coastline has doubled over the past 52 years. Such deterioration of arctic coastlines is likely to have significant impacts on local ecosystems, communities living in the Arctic, and oil and gas development.
Arctic shorelines are especially susceptible to erosion because their sediments are often held together by nothing more than ice. Scientists have been concerned about these fragile coasts, because they will be pounded harder by waves as the sea ice disappears and storms intensify. Warmer water and rising sea levels make matters even worse. Ground zero might well be the coastline along the Beaufort Sea in northeastern Alaska, where the sediments are particularly ice-rich and the shore unprotected.
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If I can't see this from my window it doesn't exist!
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Sat, Feb 21, 2009
from Los Angeles Times:
Bubbles of warming, beneath the ice
As permafrost thaws in the Arctic, huge pockets of methane -- a potent greenhouse gas -- could be released into the atmosphere. Experts are only beginning to understand how disastrous that could be.... International experts are alarmed. "Methane release due to thawing permafrost in the Arctic is a global warming wild card," warned a report by the United Nations Environment Programme last year. Large amounts entering the atmosphere, it concluded, could lead to "abrupt changes in the climate that would likely be irreversible."
Methane (CH4) has at least 20 times the heat-trapping effect of an equivalent amount of carbon dioxide (CO2). As warmer air thaws Arctic soils, as much as 50 billion metric tons of methane could be released from beneath Siberian lakes alone, according to Walter’s research. That would amount to 10 times the amount currently in the atmosphere. ...
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Methane bubbles ... that's almost a stripper name!
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Thu, Feb 19, 2009
from Slashdot:
Arctic Ice Extent Understated Because of 'Sensor Drift'
In May, 2008 they went so far as to predict that the North Pole would be ice-free during the 2008 'melt season,' leading to a lively Slashdot discussion. Today, however, they say that they have been the victims of 'sensor drift' that led to an underestimation of Arctic ice extent by as much as 500,000 square kilometers. The problem was discovered after they received emails from puzzled readers, asking why obviously sea-ice-covered regions were showing up as ice free open ocean. It turns out that the NSIDC relys on an older, less-reliable method of tracking sea ice extent called SSM/I that does not agree with a newer method called AMSR-E. So why doesn't NSIDC use the newer AMSR-E data? 'We do not use AMSR-E data in our analysis because it is not consistent with our historical data.' Turns out that the AMSR-E data only goes back to 2002, which is probably not long enough for the NSIDC to make sweeping conclusions about melting. The AMSR-E data is updated daily and is available to the public. Thus far, sea ice extent in 2009 is tracking ahead of 2005, 2006, 2007, and 2008, so the predictions of an ice-free north pole might be premature. ...
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Thank goodness! It's all a mistake! It's not happening after all!
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Wed, Feb 18, 2009
from NOAA, via Mongabay:
CO2 levels rise to a new record
Atmospheric carbon dioxide concentrations climbed 2.28 parts-per-million (ppm) in 2008 to the highest level in at least 650,000 years -- and possibly 20 million years -- reports NOAA.
The average annual growth rate of CO2 concentrations this decade is now 2.1 ppm a year or 40 percent higher than that of the 1990s. CO2 emissions from the burning of fossil fuels are increasing at four times the rate of the previous decade.... Some scientists, including James Hansen of NASA's Goddard Institute for Space Studies, warn that CO2 levels must be kept below 350 ppm to avoid serious impacts from climate change. CO2 concentrations are presently around 386 ppm.
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Guinness didn't want to see this.
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Mon, Feb 16, 2009
from Mongabay:
Mass media 'screwing up' global warming reporting, says renowned climatologist
"Business managers of media organizations," [Stephen Schneider] said, "you are screwing up your responsibility by firing science and environment reporters who are frankly the only ones competent to do this."
Schneider points to CNN, which in December fired all of its science and technology reporters. "Why didn't they fire their economics team or their sports team?" asks Schneider. "Why don't they send their general assignment reporters out to cover the Superbowl?" ... Schneider's frustration doesn't stop at the media. He believes scientists are not living up to their responsibility to actively participate in scientific discussions with the mainstream media. ...
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Not until we declare war on climate change will we see sexy coverage on CNN: [Swoosh! Climate in Crisis! Day 14,233!]
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