Himalayan Trails: sand dunes

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GLOBAL WARMING

Glacier melt in the Himalayas is projected to increase flooding, rock avalanches from destabilized slopes, and affect water resources within the next two to three decades. This will be followed by decreased river flows as the glaciers recede.

Freshwater availability in Central, South, East and Southeast Asia particularly in large river basins is projected to decrease due to climate changes which, along with population growth and increasing demand arising from higher standards of living, could adversely affect more than a billion people by the 2050s.

Coastal areas, especially heavily-populated mega-delta regions in South, East and Southeast Asia, will be at greatest risk due to increased flooding from the sea and in some mega-deltas flooding from the rivers.

Climate change is projected to impinge on sustainable development of most developing countries of Asia as it compounds the pressures on natural resources and the environment associated with rapid urbanization, industrialization and economic development. It is projected that crop yields could increase up to 20% in East and Southeast Asia while it could decrease up to 30% in Central and South Asia by the mid-21st century.

Taken together and considering the influence of rapid population growth and urbanization, the risk of hunger is projected to remain very high in several developing countries.

Endemic morbidity and mortality due to diarrhoeal disease primarily associated with floods and droughts are expected to rise in East, South and Southeast Asia due to projected changes in hydrological cycle associated with global warming. Increases in coastal water temperature would exacerbate the abundance and/or toxicity of cholera in South Asia.

From Summary for Policymakers April 6th, 2007 Relating to Asia

IPCC WGII Fourth Assessment Report

Himalayan Trails

Wednesday, October 18, 2006

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