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Impact of drought on WASH systems

25 bytes added, 20:02, 4 June 2012

→‎Definitions of drought

'''d. Socioeconomic''': when the physical water shortage starts to affect people, individually and collectively. Or, when the supply and demand of an economic good are affected.<br>

====Drought and ASALs====

Drought also adds stress to arid and semi-arid lands (ASALs), where dry conditions already exist, due to:

* Annual [http://en.wikipedia.org/wiki/Evapotranspiration evapotranspiration] (PET) rates that are usually more than twice the annual rainfall. These occur due to a mix of high temperatures, greater amounts of sunshine, less cloud cover, high winds and low relative humidity.

|[[Image:WaterAvailabilityChangeMap.jpg|thumb|right|400px|Change in water availability compared with average 1961-1990 (%). 2050 based on IPCC scenario A1.]]

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==Drought links==

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