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Posts Tagged ‘Greenland’

Death Valley Dethrones Impostor As Hottest Place On Earth

December 29th, 2012 12:22 admin View Comments

Earth

Hugh Pickens writes “Adam Nagourney reports that after a yearlong investigation a team of climate scientists announced that it is throwing out a reading of 136.4 degrees claimed by the city of Al Aziziyah, Libya on Sept. 13, 1922 making the 134-degree reading registered on July 10, 1913, at Greenland Ranch in Death Valley the official world record as the hottest place on earth. ‘It’s about time for science, but I think we all knew it was coming,’ says Randy Banis. ‘You don’t underestimate Death Valley. Most of us enthusiasts are proud that the extremes that we have known about at Death Valley are indeed the most harsh on earth.’ The final report by 13 climatologists appointed by the World Meteorological Organization, the climate agency of the United Nations, found five reasons to disqualify the Libya claim, including questionable instruments, an inexperienced observer who made the reading, and the fact that the reading was anomalous for that region and in the context of other temperatures reported in Libya that day. ‘The more we looked at it, the more obvious it appeared to be an error,’ says Christopher C. Burt, a meteorologist with Weather Underground who started the debate in a blog post in 2010.”

Source: Death Valley Dethrones Impostor As Hottest Place On Earth

Grim Picture of Polar Ice-Sheet Loss

November 30th, 2012 11:10 admin View Comments

Earth

ananyo writes “A global team of researchers has come up with the most accurate estimate yet for melting of the polar ice sheets, ending decades of uncertainty about whether the sheets will melt further or actually gain mass in the face of climate change. The ice sheets in Greenland and Antarctica are melting at an ever-quickening pace. Since 1992, they have contributed 11 millimeters — or one-fifth — of the total global sea-level rise, say the researchers. The two polar regions are now losing mass three times faster than they were 20 years ago, with Greenland alone now shedding ice at about five times the rate observed in the early 1990s. This latest estimate, published this week in Science, draws on up to 32 years of ice-sheet simulations and 20 years of satellite data to give an estimate two to three times more accurate than that in the last IPCC report.”

Source: Grim Picture of Polar Ice-Sheet Loss

Atlantic Hurricane Season 30 Percent Stronger Than Normal

November 2nd, 2012 11:15 admin View Comments

Earth

MatthewVD writes “The National Hurricane Center reported today that the combined energy and duration of all the storms in the Atlantic basin hurricane season was 30 percent above the average from 1981 to 2010. At Weather Underground, Dr. Jeff Masters blogs that record low levels of arctic ice could have caused a ‘blocking ridge’ over Greenland that pushed Hurricane Sandy west. Meanwhile, Bloomberg BusinessWeek says, ‘it’s global warming, stupid.’”

Source: Atlantic Hurricane Season 30 Percent Stronger Than Normal

Arctic Sea Ice Hits Record Low

September 6th, 2012 09:26 admin View Comments

Earth

Titus Andronicus writes “Angela Fritz and Jeff Masters of Weather Underground analyze this year’s record ongoing Arctic ice melt. Arctic sea ice extent, area, and volume are all at record lows for the post-1979 satellite era. The ice is expected to continue melting for perhaps another couple of weeks. Extreme sea ice melting might help cause greater numbers of more powerful Arctic storms, help to accelerate the melting of the Greenland ice sheet, and help to accelerate global warming itself, due to the increased absorption of solar energy into the ocean.”

Source: Arctic Sea Ice Hits Record Low

NASA Satellite Measurements Show Unprecedented Greenland Ice Sheet Melt

July 24th, 2012 07:30 admin View Comments

NASA

NASA reports that measurements taken from orbiting satellites indicate the Greenland ice sheet underwent melting over a larger area than they’ve seen in 30 years of observations. On July 8, the satellites found evidence that about 40% of the ice sheet’s surface had melted. Observations just four days later showed 97% of the surface had melted. “This extreme melt event coincided with an unusually strong ridge of warm air, or a heat dome, over Greenland. The ridge was one of a series that has dominated Greenland’s weather since the end of May. ‘Each successive ridge has been stronger than the previous one,’ said Mote. This latest heat dome started to move over Greenland on July 8, and then parked itself over the ice sheet about three days later. By July 16, it had begun to dissipate. Even the area around Summit Station in central Greenland, which at 2 miles above sea level is near the highest point of the ice sheet, showed signs of melting. Such pronounced melting at Summit and across the ice sheet has not occurred since 1889, according to ice cores analyzed by Kaitlin Keegan at Dartmouth College in Hanover, N.H. A National Oceanic and Atmospheric Administration weather station at Summit confirmed air temperatures hovered above or within a degree of freezing for several hours July 11-12.” Photos also surfaced last week showing the Petermann Glacier in Greenland ‘calving’ — some very large chunks of it broke off and started to drift away.

Source: NASA Satellite Measurements Show Unprecedented Greenland Ice Sheet Melt

America’s Secret Underground Ice Fortresses

April 9th, 2012 04:01 admin View Comments

The Military

Hugh Pickens writes “With the advent of long-range bombers and intercontinental ballistic missiles in the 1950s, it was inevitable that military attention would be drawn to remote but strategic arctic regions. Now Defense Tech reports on Project Iceworm — America’s secret cold war plan to build a network of underground missile bases under the Greenland ice cap capable of launching ‘Iceman’ ICBM missiles at Russia. The first base, ‘Camp Century,’ built 800 miles from the North Pole, contained 21 steel-arch covered trenches; the longest of which was 1,100-feet long, 26-feet wide and 26-feet high. The massive base, constructed to house 200 troops, was officially built to conduct scientific research. But the real reason was apparently to test out the feasibility of burying nuclear missiles below the ice, since Greenland is so much closer to Russia than the ICBM fields located in the continental U.S. If fully implemented, the project would cover an area of 52,000 square miles with clusters of missile launch centers spaced four miles apart. New tunnels were to be dug every year, so that after 5 years there would be thousands of firing positions, among which the several hundred missiles could be rotated. Camp Century was powered by a portable nuclear power plant designated PM-2A, the first of the U.S. Army’s portable reactors to actually produce power, and was rated at two megawatts of electrical power, also supplying steam to operate the well that provided water for the troops. The Army team assembled the prefabricated reactor in 77 days, and just nine hours after fuel elements containing forty-three pounds of enriched Uranium-235 were inserted into the reactor, electricity was produced. Maintaining the tunnels at Camp Century required time-consuming and laborious trimming and removal of more than 120 tons of snow and ice each month. The camp, begun in 1959, was abandoned for good in 1966 and it is anticipated that the Greenland icecap, in constant motion, will completely destroy all the tunnels over the course of the coming years.”

Source: America’s Secret Underground Ice Fortresses

Severe Arctic Ozone Loss

October 5th, 2011 10:12 admin View Comments

Earth

iONiUM writes “The BBC reports that ‘Ozone loss over the Arctic this year was so severe that for the first time it could be called an “ozone hole” like the Antarctic one, scientists report. About 20km (13 miles) above the ground, 80% of the ozone was lost, they say. The cause was an unusually long spell of cold weather at altitude. In cold conditions, the chlorine chemicals that destroy ozone are at their most active.’ This is the first time in observational history that the Arctic ozone has been depleted to such extensive levels (abstract). This will mean high UV problems for Russia, Greenland and Norway.”

Source: Severe Arctic Ozone Loss

UPDATE: Atlas: Greenland is a Different Color Now, Thanks to Warming

September 23rd, 2011 09:10 admin View Comments

Atlas Takes Heat For Melting Glacier Claim

September 19th, 2011 09:46 admin View Comments

Earth

dtjohnson writes “The ‘Times Atlas of the World‘ claims, while publicizing its newest edition, that global warming has turned 15 percent of Greenland’s former ice-covered land ‘green and ice-free.’ Now, however, scientists from the Scott Polar Research Institute say those figures, based on data from the National Snow and Ice Data Center, are wrong. ‘Recent satellite images of Greenland make it clear that there are in fact still numerous glaciers and permanent ice cover where the new Times Atlas shows ice-free conditions and the emergence of new lands,’ they say in a letter that has been sent to the Times. Others have pointed out that if 15 percent of Greenland ice cover had been lost, then sea levels would have risen by 1 meter… which has not happened. Perhaps yet another climate controversy is brewing.” An update to the Sciencemag.com story pinpoints the probable source of the error: a 2001 map from the NSIDC illustrates Greenland’s central ice sheet without showing any of the peripheral glaciers. The Atlas editors may have seen this map and misinterpreted it. Says the article, “Now glaciologists are left trying to figure out how not understate the importance of the extent glacial ice melt, while at the same time correcting the error.”

Source: Atlas Takes Heat For Melting Glacier Claim

New Atlas Makes It Official: Greenland is a Different Color Now, Thanks to Warming

September 16th, 2011 09:10 admin View Comments
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