The retreat of the glaciers is another manifestation of climate change affecting the region. Thus, the Bolivarian Republic of Venezuela, Colombia, Ecuador and Chile show
Mean changes in runoff Water availability in percentages
evidence of reductions in the size of their glaciers; in Peru and the Plurinational State of Bolivia, the shrinkage of the glaciers, compared to 1970 and 1975, is even more striking (figure
Chacaltaya glacier
30 %
10 0
-10 -30
Note: Mean changes in annual runoff between 1980-1999 and 2090-2099 for the SRES A1B emissions scenario.
0 100 200
Source: Parry, M.L. et al. : Technical Summary. Climate Change 2007: Impacts, Adaptation and Vulnerability, Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, 2007.
Figure 1.5 0
Retreat of seven Andean glaciers Cumulative evolution of length in metres 1980
1970
- 200 - 400 - 600 - 1 000 - 1 200 - 1 400
300 metres
Source: CAN, UNEP and Spanish Agency for International Cooperation, ¿El fin de las cumbres nevadas? Glaciares y Cambio Climático en la Comunidad Andina, 2007.
Figure 1.6a
1963 1983 1996 2000 2003 2006
1650
1990
2000
Antizana 15a Antizana 15b Broggi
Uruashraju Yanamarey Cajap
Pastoruri
Source: CAN, UNEP and Spanish Agency for International Cooperation, ¿El fin de las cumbres nevadas? Glaciares y Cambio Climático en la Comunidad Andina, 2007.
Figure 1.6b
10
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44