CASE STUDY Peru: High-Elevation Weather Currently, the Andean tropical gla- ciers are in an accelerated process of retreat. These glaciers are considered a source of permanent water during dry winters and droughts in southern Peru. The situation has drawn atten- tion, as water availability in surround- ing communities is at stake. Coropuna is the largest and highest volcano in Peru, located in Arequipa—1,000 km (620 mi) south of Lima. With a maxi- mum elevation of 6,400 m (21,000 ft), it is the third-highest point in Peru and is located in one of the driest regions—approximately 400 mm (16 in.) of annual precipitation. Based on this background, the Asso- ciation of Sustainable Development (AEDES), which has worked helping surrounding areas adapt to climate change, contacte

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