Climate Change Mark C. Serreze Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO.

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Presentation transcript:

Climate Change Mark C. Serreze Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO

The Keeling Curve

Source: USGS

South Cascade Glacier, Washington 1928 and 2000

Greenland Ice Sheet Contains about 7.5 m equivalent sea level rise. The ice sheet rises to over 3000m elevation. Is the source of most icebergs in the North Atlantic (like the one than sank the Titanic) Courtesy K. Steffen, NSIDC

Increasing Greenland Melt K Steffen and R Huff, Univ. of Colorado

Melt-Induced Flow Enhancement Roger Braithwaite © AAAS © Scott McGhee

Jacobshavn Glacier, Greenland Courtesy NASA

The Antarctic Ice Sheet Contains most of the earths's freshwater. The ice sheet rises to over 4000 m. If it completely melted, sea level would rise by about 65 m. Ice is 2 miles thick in some areas. The figure at right is based on a composite of satellite images. Courtesy T. Scambos, NSIDC

There has been a recent breakup of floating ice sheves along the Antarctic peninsula, which seems to be related to regional climate warming.

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