Global Outlook for Ice & Snow
Glacier area (km 2 )
1959
1996
25
20
15
10
5
0
1 km
1850 1946 1959 1987 1995 2002 0
Figure 6B.19: Glacier changes on Nevado de Santa Isabel, Colombia. This inactive volcano lost about 87 per cent of its ice cover between 1850 and 2002. Source: Data from the World Glacier Monitoring Service, Zurich, Switzerland
Glacier length (m)
1 500
1 250
1 000
750
500
1900
1950
2000
Figure 6B.20: Shrinking Lewis Glacier, Mount Kenya. This tropical glacier retreated by more than 800 m between 1893 and 2004 and lost almost 16 m water equivalent of its thickness between 1979 and 1996. Source: Data from the World Glacier Monitoring Service, Zurich, Switzerland
Kersten glacier on Mt. Kilimanjaro. Photo: Georg Kaser, Tropical Glacier Group, University of Innsbruck
CHAPTER 6B
GLACIERS AND ICE CAPS
143
Photo: Georg Kaser, Tropical Glacier Group, University of Innsbruck
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