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Global Warming "Is Happening Faster" |
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By Paul Eccleston and Charles Clover
The Telegraph UK
Tuesday 23 October 2007
A weakening in the Earth's ability to absorb carbon dioxide from the atmosphere
means that global warming is happening faster than we thought, scientists said
yesterday.
Scientists thought that concentrations of carbon dioxide, the most important
greenhouse gas, in the atmosphere would grow in line with the world economy.
The latest figures show, however, that over the past seven years CO2 concentrations
have grown 35 per cent faster, partly because the ability of the Southern Ocean
and other carbon "sinks" such as vegetation and forests to take it
up has been reduced.
It is a development which has alarmed scientists from the Global Carbon Project,
the University of East Anglia (UEA) and the British Antarctic Survey (BAS) who
compared the period 1970-2000 with the past seven years.
They found that increasing use of coal-fired power stations rather than cleaner
alternatives, had increased levels of CO2 in the atmosphere by 17 per cent above
anticipated levels, based on economic projections.
At the same time there had been a decline in the ability of ocean and land
'sinks' to absorb CO2 from the atmosphere which resulted in an 18 per cent increase.
Over half the decline of the carbon sink efficiency was the result of intensifying
winds in Antarctica's Southern Ocean disrupting the sea's ability to store carbon,
the scientists said.
If the oceans soak up less of the greenhouse gas there are fears that global
warming leading to climate change will get worse.
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White House Cut Warming Impact Testimony |
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By H. Josef Herbert
The Associated Press
Tuesday 23 October 2007
Washington - The White House severely edited congressional testimony given
Tuesday by the director of the Centers for Disease Control and Prevention on
the impact of climate change on health, removing specific scientific references
to potential health risks, according to two sources familiar with the documents.
Dr. Julie Gerberding, director of the Atlanta-based CDC, the government's premier
disease monitoring agency, told a Senate hearing that climate change "is
anticipated to have a broad range of impacts on the health of Americans."
But her prepared testimony was devoted entirely to the CDC's preparation, with
few details on what effects climate change could have on the spread of disease.
Only during questioning did she describe some specific diseases that likely
would be affected, again without elaboration.
Her testimony before the Senate Environment and Public Works Committee had
much less information on health risks than a much longer draft version Gerberding
submitted to the White House Office of Management and Budget for review in advance
of her appearance.
"It was eviscerated," said a CDC official, familiar with both versions,
who spoke on condition of anonymity because of the sensitive nature of the review
process.
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Desire and the Green Cure |
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By Richard Glover
The Sydney Morning Herald AU
Sunday 21 October 2007
I
used to feel bad about mindless consumerism but not any more. The green
movement has come to my rescue. With every purchase, I can now enjoy
the warm glow of helping develop environmentally sound practices.
There's
my new briefcase, for example. It is shiny and luxurious and its
purchase has allowed me to throw my old one into the bin. But there's
no eco-guilt for me.
According
to the manufacturer, the leather in my briefcase was stained using
"extracts of bark and seeds collected from renewable sources in the
forests of Africa and India". The work was all done by "traditional
artisans", all of them using "sustainable practices" in the "old
saddler tradition". There's not a lot of detail on the leather but,
based on the tone of the pamphlet, I'm pretty sure the cows would have
been volunteers.
I feel I now deserve some sort of medal just for handing over my credit card.
I'm
not alone in falling for this sort of sales pitch. People are always
looking for an excuse to consume more and the latest excuse - bizarrely
- is environmentalism.
Let's
call it "greensumerism". Forget the simple mantra of "less is more";
with the help of the green movement you can now indulge in a frenzy of
consumerism, with each luxury purchase excused by the idea that you are
helping the development of the "green" sector.
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Expert: Warming Climate Fuels Mega-Fires |
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By Scott Pelley
CBS News
Sunday 21 October 2007
Scott Pelley reports from the American West's fire lines on the rising number of mega-fires.
EDITORS NOTE: The intro of this article was cut to skip to the part about climate change.
The
severity of the burning and size of the fires caught the eye of Tom
Swetnam, one of the world's leading fire ecologists. He wanted to know
what's touched off this annual inferno and whether it's truly a
historic change.
At
the University of Arizona, Swetnam keeps a remarkable woodpile,
comprised of the largest collection of tree rings in the world. His
rings go back 9,000 years, and each one of those rings captures one
year of climate history.
Swetnam
found recent decades have been the hottest in 1,000 years. And
recently, he and a team of top climate scientists discovered something
else: a dramatic increase in fires high in the mountains, where fires
were rare.
"As
the spring is arriving earlier because of warming conditions, the snow
on these high mountain areas is melting and running off. So the logs
and the branches and the tree needles all can dry out more quickly and
have a longer time period to be dry. And so there's a longer time
period and opportunity for fires to start," Swetnam says
"The spring comes earlier, so the fire season is just longer," Pelley remarks.
"That's
right. The fire season in the last 15 years or so has increased more
than two months over the whole Western U.S. So actually 78 days of
average longer fire season in the last 15 years compared to the
previous 15 or 20 years," Swetnam says.
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Rising Seas Will Swamp America's Shores, Study Says |
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By Seth Borenstein
The Associated Press
Monday 22 Oct 2007
Several scientists agree one meter rise will happen as soon as 50 years from now.
Ultimately,
rising seas will likely swamp the first American settlement in
Jamestown, Va., as well as the Florida launch pad that sent the first
American into orbit, many climate scientists are predicting.
In about a century, some of the places that make America what it is may be slowly erased.
Global
warming - through a combination of melting glaciers, disappearing ice
sheets and warmer waters expanding - is expected to cause oceans to
rise by 1 meter, or about 39 inches.
It
will happen regardless of any future actions to curb greenhouse gases,
several leading scientists say. And it will reshape the nation.
Rising
waters will lap at the foundations of old money Wall Street and the new
money towers of Silicon Valley. They will swamp the locations of
big-city airports and major interstate highways.
Storm
surges worsened by sea level rise will flood the waterfront getaways of
rich politicians - the Bushes' Kennebunkport and John Edwards' place on
the Outer Banks. And gone will be many of the beaches in Texas and
Florida favored by budget-conscious students on spring break.
That's
the troubling outlook projected by coastal maps reviewed recently by
the Associated Press. The maps, created by scientists at the University
of Arizona, are based on data from the U.S. Geological Survey.
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By Jon Gertner
The New York Times Magazine
Sunday 21 October 2007
Scientists
sometimes refer to the effect a hotter world will have on this
country's fresh water as the other water problem, because global
warming more commonly evokes the specter of rising oceans submerging
our great coastal cities. By comparison, the steady decrease in
mountain snowpack - the loss of the deep accumulation of high-altitude
winter snow that melts each spring to provide the American West with
most of its water - seems to be a more modest worry. But not all
researchers agree with this ranking of dangers. Last May, for instance,
Steven Chu, a Nobel laureate and the director of the Lawrence Berkeley
National Laboratory, one of the United States government's pre-eminent
research facilities, remarked that diminished supplies of fresh water
might prove a far more serious problem than slowly rising seas. When I
met with Chu last summer in Berkeley, the snowpack in the Sierra
Nevada, which provides most of the water for Northern California, was
at its lowest level in 20 years. Chu noted that even the most
optimistic climate models for the second half of this century suggest
that 30 to 70 percent of the snowpack will disappear. "There's a
two-thirds chance there will be a disaster," Chu said, "and that's in
the best scenario."
In
the Southwest this past summer, the outlook was equally sobering. A
catastrophic reduction in the flow of the Colorado River - which mostly
consists of snowmelt from the Rocky Mountains - has always served as a
kind of thought experiment for water engineers, a risk situation from
the outer edge of their practical imaginations. Some 30 million people
depend on that water. A greatly reduced river would wreak chaos in
seven states: Colorado, Utah, Wyoming, New Mexico, Arizona, Nevada and
California. An almost unfathomable legal morass might well result, with
farmers suing the federal government; cities suing cities; states suing
states; Indian nations suing state officials; and foreign nations (by
treaty, Mexico has a small claim on the river) bringing international
law to bear on the United States government. In addition, a lesser
Colorado River would almost certainly lead to a considerable amount of
economic havoc, as the future water supplies for the West's industries,
agriculture and growing municipalities are threatened. As one prominent
Western water official described the possible future to me, if some of
the Southwest's largest reservoirs empty out, the region would
experience an apocalypse, "an Armageddon."
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California to Sue Bush Administration Over Law to Limit Emissions |
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By Bob Egelko
The San Francisco Chronicle
Saturday 20 October 2007
California
will sue the Bush administration next week to demand action on a
long-stalled request to let the state limit auto emissions of gases
linked to global warming, Gov. Arnold Schwarzenegger's office said
Friday.
"We've
just waited too long" for a decision from the Environmental Protection
Agency, said Schwarzenegger's press secretary, Aaron McLear.
The
state asked the EPA in December 2005 for permission to enforce the
California law, the model for statutes passed later in 11 other states.
The EPA's approval is needed for California to implement a law more
stringent than federal clean-air standards, and the agency has granted
every such request California has made over the past 30 years.
The
EPA held a public hearing in May and has promised a decision by the end
of the year. But McLear said the state has run out of patience and will
go to court Wednesday, the deadline that Schwarzenegger set in April.
"There's
really no excuse at this point why we shouldn't be granted a waiver,"
McLear said. He said the state's case was strengthened in April when
the U.S. Supreme Court, in a suit filed by California and other states
against the EPA, "agreed with the rest of the world that greenhouse gas
emissions are bad for the air."
The suit will be filed in a Washington, D.C., federal court, said state Attorney General Jerry Brown.
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Bush Aide Rejects Climate Goal |
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By Juliet Eilperin
The Washington Post
Friday 19 October 2007
Science adviser's stance at odds with panel on warming.
The
president's top science adviser said yesterday there is no solid
scientific evidence that the widely cited goal of limiting future
global temperature rises to two degrees Celsius above pre-industrial
levels is necessary to avert dangerous climate change, an assertion
that runs counter to that of many scientists as well as the Nobel
Prize-winning Intergovernmental Panel on Climate Change.
John
H. Marburger III, director of the White House Office of Science and
Technology Policy, said at a news conference that the target of
preventing Earth from warming more than two degrees Celsius, or 3.6
degrees Fahrenheit, "is going to be a very difficult one to achieve and
is not actually linked to regional events that affect people's lives."
A
wide number of scientists, as well as European leaders and many U.S.
lawmakers, have endorsed the goal of limiting global temperature rise
to that level. That roughly translates to holding the buildup of
greenhouse gases in the atmosphere to 450 parts per million of carbon
dioxide or equivalents, compared with the current level of roughly 385
parts per million.
The
atmosphere has already warmed by 1.4 degrees Fahrenheit compared with
pre-industrial levels. In its April report, the IPCC outlined a range
of environmental impacts that could transpire if temperatures rise 1.8
to 3.6 degrees Fahrenheit above 1980 levels. These include placing
between 20 and 30 percent of all species "at increasing risk of
extinction" damaging most coral reefs; and "increased morbidity and
mortality from heat waves, floods and droughts."
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That's about how much time is left for us to get our act together. |
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