Usuari:Watti

Global Outlook for Ice and Snow, UNEP United Nations Environment Programme UNEP 2007 !!98 Mt UNEP Web

The glaciers of Norway react strongly to atmospheric warming by enhanced melt, p.117 In Norway the increased winter snow fall 1992-5 reduced fish growth by 50%, p.209. Glaciers in the European Alps reached their maximum around year 1850. The loss was 50 % by 2000, p. 136. The Himalayas provide water to people through Asia and influence the lives of 40 % of the world’s population, p. 130. The Himalaya is the source of the Yangtse, Mekong, Brahmaputra, Ganges and Indus (p. 227, Kathmandu, Nepal). Agriculture consumes 90 % of water resources. During dry years, the input of glacier water could be as high as 70–80 % and 20–40 % in normal years. Since 2000 they have been retreating considerably, p.135. New York City is especially vulnerable to major hurricanes, p. 174.