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Latest Polar ice cap Stories

382dbede65b098c0a7f6268a99af0fa8
2009-04-06 11:35:00

NASA and the National Snow and Ice Data Center say that the decade-long trend of shrinking sea ice cover in the Arctic is continuing and new evidence suggests that the ice cap is thinning as well. Arctic sea ice naturally cools air and water masses and plays an important role in ocean circulation as well as reflecting solar radiation back into space. However, Arctic sea ice has been declining at a staggering rate in recent years. Satellite monitoring of Arctic sea ice showed that this winter...

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2009-03-06 10:50:00

ESA's Mars Express orbiter imaged the snow-laden region of Rupes Tenuis on the martian north pole on July 29, 2008. The images are centered around 81° north and 297° east and have a ground resolution of 41 m/pixel. They cover an area of about 44 000 km2, almost as large as the Netherlands.  Rupes Tenuis is located at the southern edge of the martian north polar cap, approximately 5500 km northeast of the Tharsis volcanic region. At present, polar caps contain the largest water...

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2009-03-01 15:05:00

Renowned Arctic explorer Pen Hadow and two companions have set out on a grueling 90-day trek to the North Pole, collecting data along the way to determine precisely how fast the Arctic sea-ice is melting, according to the London-based Catlin Arctic Survey. The British explorers were dropped onto the ice by plane about 668 miles off the northern coast of Canada on Saturday. The data the team collects will augment satellite and submarine observations and help experts create a modeling of the...

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2008-09-28 08:50:00

Following a record-breaking season of arctic sea ice decline in 2007, NASA scientists have kept a close watch on the 2008 melt season. Although the melt season did not break the record for ice loss, NASA data are showing that for a four-week period in August 2008, sea ice melted faster during that period than ever before. Each year at the end of summer, sea ice in the Arctic melts to reach its annual minimum. Ice that remains, or "perennial ice," has survived from year to year and contains...

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2008-09-24 08:50:00

Environmental scientists studying the world's shrinking polar ice sheets will soon get a substantial boost in computing power thanks to IU's Polar Grid Project. Funded by a $1.96 million grant from the National Science Foundation (NSF), Indiana University and Polar Grid partners Elizabeth City State University (ECSU) and the NSF's Center for Remote Sensing of Ice Sheets (CReSIS), headquartered at the University of Kansas, are poised this week to deploy a collection of customized computational...

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2008-09-22 13:40:00

Scientists are now able to better explain why Mars's residual southern ice cap is misplaced, thanks to data from ESA's Mars Express spacecraft - the martian weather system is to blame. And so is the largest impact crater on Mars "“ even though it is nowhere near the south pole. Like Earth, Mars has frozen polar caps, but unlike Earth, these caps are made of carbon dioxide ice as well as water ice. During the southern hemisphere's summer, much of the ice cap sublimates, a process in...

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2008-09-17 08:35:00

U.S. scientists say global warming caused arctic sea ice to melt to its second-lowest level this year, rising slightly from 2007's record but still showing a downward trend. The National Snow and Ice Data Center said in March, that the thick, older sea ice was continuing to decline. According to NASA-processed satellite microwave data, this perennial ice used to cover 50-60 percent of the Arctic. Researchers found this winter it covered less than 30 percent. Temperatures have been lower in...

5cda7b544ca4d30816817f1902577e441
2008-08-27 11:55:00

Scientists at the National Snow and Ice Data Center say Arctic Ocean sea ice has melted to the second lowest level since satellite observations began.On Monday, they recorded Sea ice melt that exceeded the low recorded in 2005, which had held second place.Ice in summer 2008 has a chance to diminish below the record low set last year, according to scientists at the National Snow and Ice Data Center.Some environmentalists groups are calling the rapid melts another alarm bell warning...

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2008-05-15 14:15:00

New observations from NASA's Mars Reconnaissance Orbiter indicate that the crust and upper mantle of Mars are stiffer and colder than previously thought.The findings suggest any liquid water that might exist below the planet's surface, and any possible organisms living in that water, would be located deeper than scientists had suspected."We found that the rocky surface of Mars is not bending under the load of the north polar ice cap," said Roger Phillips of the Southwest Research Institute in...

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2008-05-14 11:24:17

Even in the clearest, bluest sky on Earth, there is still water vapor in our atmosphere. If you could condense all the water vapor out of the atmosphere above you, it would form a layer of water two centimeters deep. On Mars today, there is also water vapor in the atmosphere but it would create a layer just 10 micrometers thick. As on Earth, this water is constantly moving through a cycle of condensation and evaporation. When it condenses, it falls to the surface. When it evaporates, it...