Greenland's Receeding Ice
July 2000, 8.4 MB

Less ice, more ocean. That's the troubling conclusion emerging from new NASA research to study the condition of Greenland's ice sheet. Using a laser altimeter repeatedly flown across the surface of Greenland, experts say the edges of the ice found there may be thinning at the rate of nearly one meter per year.

http://svs.gsfc.nasa.gov/imagewall/greenland.html

More than Just Carbon Dioxide
January 2002, 2.4 MB

Methane: a simple compound made of carbon and hydrogen, this gas comes from ordinary sources, like cattle herds and garbage dumps. On a planetary scale it also has a significant impact on climate. As it builds up in the atmosphere, it traps energy from the sun like a layer of insulation.

http://www.gsfc.nasa.gov/topstory/20020103greenhouse.html

Evidence of Arctic Warming Grows
October 2003, 3.6 MB

Recently observed change in Arctic temperatures and sea ice cover may be a harbinger of global climate changes to come. Satellite data are allowing researchers to more clearly see Arctic changes and develop an improved understanding of the possible effect on climate worldwide.

http://www.gsfc.nasa.gov/topstory/2003/1023esuice.html

Arctic Sea Ice Minimum Concentration
October 2006, 8 MB

This animation shows the annual minimum Arctic sea ice extent and concentration from 1979 to 2006. Average climatology from 1979 to 2004 is shown as a yellow outline.

http://svs.gsfc.nasa.gov/goto?3378

Global Rotation with Seasonal Landcover
February 2007, 8 MB

This animation shows seasonal changes in landcover and Arctic sea ice from 2005-09-21 through 2006-09-20.

http://svs.gsfc.nasa.gov/goto?3404

'Remarkable' Drop in Arctic Sea Ice Raises Questions
September 2007, 12.9 MB

The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached around Sept. 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. This data visualization shows the annual sea ice minimum from 1979 through 2007.

http://www.nasa.gov/centers/goddard/news/topstory/2007/arctic_minimum.html