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Latest Permafrost Stories

2011-11-07 16:20:17

From the North Pole to the Arctic Ocean, the frozen soils within this region keep an estimated 1,672 billion metric tons of carbon out of the Earth's atmosphere. This sequestered carbon is more than 250 times the amount of greenhouse gas emissions attributed to the United States in the year 2009. As global temperatures slowly rise, however, so too do concerns regarding the potential impacts upon the carbon cycle when the permafrost thaws and releases the carbon that has been trapped for eons....

2011-08-11 22:01:59

Ice and frozen ground at the North and South Poles are affected by climate change induced warming, but the consequences of thawing at each pole differ due to the geography and geology, according to a Penn State hydrologist. "The polar regions, particularly the Arctic, are warming faster than the rest of the world," Michael N. Gooseff, associate professor of civil and environmental engineering, told attendees today (Aug. 11) at the 96th annual meeting of the Ecological Society of America in...

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2011-07-27 15:23:38

Scientists say a tundra fire in the circumpolar arctic released about as much carbon into the atmosphere as the tundra has stored in the previous 50 years. The study, published in the July 28 issue of Nature, of the Anaktuvuk River fire on Alaska's North Slope revealed just how quick a single tundra fire can offset or reverse a half-century worth of soil-stored carbon. "Fire has been largely absent from tundra for the past 11,000 or so years, but the frequency of tundra fires is increasing,...

2011-05-06 13:48:50

A much reduced covering of snow, shorter winter season and thawing tundra. The effects of climate change in the Arctic are already here. And the changes are taking place significantly faster than previously thought. This is what emerges from a new research report on the Arctic, presented in Copenhagen this week. Margareta Johansson, from Lund University, is one of the researchers behind the report. Together with Terry Callaghan, a researcher at the Royal Swedish Academy of Sciences, Margareta...

2011-04-18 14:30:30

International studies describe current state of the Arctic coasts The coastline in Arctic regions reacts to climate change with increased erosion and retreats by half a meter per year on average. This means substantial changes for Arctic ecosystems near the coast and the population living there. A consortium of more than thirty scientists from ten countries, including researchers from the Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association and from the...

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2011-02-17 12:00:00

Scientists at the National Snow and Ice Data Center (NSIDC) in Colorado estimate that if global warming continues even at a moderate pace, a third of the earth's permafrost will be gone by 2200. A study released Wednesday, based on UN Intergovernmental Panel on Climate Change (IPCC) scenarios, warns that global warming could cause up to 60 percent of the world's permafrost to thaw by 2200 releasing huge amounts of carbon into the atmosphere increasing the rate of climate change, AFP is...

2011-02-16 17:15:56

Up to two-thirds of Earth's permafrost likely will disappear by 2200 as a result of warming temperatures, unleashing vast quantities of carbon into the atmosphere, says a new study by the University of Colorado Boulder's Cooperative Institute for Research in Environmental Sciences. The carbon resides in permanently frozen ground that is beginning to thaw in high latitudes from warming temperatures, which will impact not only the climate but also international strategies to reduce fossil fuel...

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2010-12-06 05:55:00

According to a study released on Sunday, global warming is driving forest fires in northern latitudes to burn more frequently and fiercely. The study found that increased intensity of fires in Alaska over the last decade has changed the region from a sink to a source of carbon dioxide, which is the greenhouse gas most responsible for global warming. Boreal forests in the northern hemisphere may now soak up less of the heat-trapping gas than they give off now. The majority of the CO2 comes...

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2010-10-22 06:15:00

Climate scientists at the U.S. National Oceanic and Atmospheric Administration (NOAA) reported Thursday that Arctic temperatures are on the rise again. The sea ice extent has also fallen to one of the lowest levels on record, according to NOAA's annual Arctic report card, which was prepared this year by 69 researchers in eight countries. "A return to previous Arctic conditions is unlikely," wrote the scientists in the report. "Record temperatures across Canadian Arctic and Greenland, a...

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2010-08-04 09:31:14

Permafrost warming continues throughout a wide swath of the Northern Hemisphere, according to a team of scientists assembled during the recent International Polar Year. Their extensive findings, published in the April-June 2010 edition of Permafrost and Periglacial Processes, describe the thermal state of high-latitude permafrost during the International Polar Year, 2007-2009. Vladimir Romanovsky, a professor with the snow, ice and permafrost group at the University of Alaska Fairbanks...


Word of the Day
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'kardia,' heart.
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