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Climate science chief sees `huge gaps’ in research
CANCUN, MEXICO (AP) - From the methane-laden tundra of the far north to the depths of the oceans, world governments need to spend more on cutting-edge research to “get a handle” on how much and how quickly the world will warm in decades to come, says the head of the U.N. climate science network.
“There are huge gaps in the effort as far as scientific research is concerned,” Rajendra Pachauri told The Associated Press, pointing to concerns that the Arctic’s thawing permafrost is releasing powerful global warming gases, and the oceans might eventually turn from absorbing carbon dioxide to spewing it into the atmosphere.
“What is being done today is certainly far from adequate,” said the chairman of the Intergovernmental Panel on Climate Change (IPCC), the Nobel Peace Prize-winning organization whose twice-a-decade assessments of the latest climate research have been the authoritative guides to a warming world.
In its last detailed report, in 2007, the IPCC recommended that global emissions of carbon dioxide and other greenhouse gases, largely byproducts of fossil-fuel burning, be reduced by 25 percent to 40 percent of 1990 levels by 2020, to keep temperatures from rising more than 2 degrees Celsius (3.6 degrees Fahrenheit) above preindustrial levels.
Expert analysis of current pledges to rein in emissions finds they’ll go only 60 percent of the way toward that goal. And those pledges are voluntary, with no guarantee even of that 60 percent.
Deep-seated disputes within the conference continue to block agreement on a new binding global accord requiring rich nations _ and perhaps some emerging economies _ to reduce emissions. At best, the delegates are expected to concur in a handful of decisions on secondary issues.
Underscoring the need for action, the World Meteorological Organization reported at the conference Tuesday that events of the past decade confirmed scientists’ predictions of 20 years ago that temperatures would rise and storms would become fiercer.
In the AP interview, Pachauri was asked about the extreme events of 2010 _ the Russian heat wave and wildfires, unprecedented nationwide flooding in Pakistan, China’s worst floods and landslides in decades. He said the IPCC is working on a special report on the link between global warming and such extreme events.
“The trend is very clear,” said the Indian engineer and researcher. “We have and will continue to have increasingly more floods, more droughts, more heat waves, more extreme precipitation events.”
Describing areas where more intense research is needed, Pachauri spoke of the uncertain state of the Arctic tundra. Last year, he asked his scientific network to focus on possible “abrupt, irreversible climate change” from thawing permafrost, tundra soil frozen year-round, covering almost one-fifth of Earth’s land surface and running up to 600 meters (2,000 feet) deep.
Plant and animal matter accumulated through millennia is frozen in that soil. As it thaws, these ancient deposits finally decompose and are attacked by microbes, producing carbon dioxide and _ if in water _ methane. Both are greenhouse gases, and scientists don’t know how much is being released and how quickly.
“It’s basically the fact that people have not carried out enough measurement so that we can get a handle on how this is going to change in the future, what sort of increase of temperature will occur with the melting of the permafrost,” Pachauri said.
By Brahma Chellaney
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