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

2. The Keeling Curve

5. Source: USGS

7. South Cascade Glacier, Washington 1928 and 2000

10. 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

11. Increasing Greenland Melt K Steffen and R Huff, Univ. of Colorado 1979 1984 1989 1994 1999 2004 2002 20051998 1991 1992 1996 1995 1987

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

13. Jacobshavn Glacier, Greenland Courtesy NASA

14. 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

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