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The Effects of Climate Change on Water Resources in Iran

Authors:
[ Hedayat Fahmi ] -
[ Maryam Montazeri ] -

Abstract:

Climate change has been a universally atmospheric-oceanic phenomenon for a longterm period. This resulted from some elements, including solar and volcanic activities, atmosphere, oceans and the amount of greenhouse gases in atmosphere, which have interactive effects. These variations cause changes in climate, time and special distribution of precipitation and its kind (liquid and solid ones), runoffs, evaporation, groundwater changes, water quality and they generally provoke a new processes in world climate. We examined the available data and information by using a magic software. Then results were used as possible scenarios for a period. Suitable for a 2 100 cases. The variation of precipitation and temperature was converted into runoff by using the software of RAM (Runoff Assessment Models). The results obtained from various climate changes scenarios indicate that the rise of temperature may cause evaporation to increase in most of river basins in a year. A temperature increase of about 2-6 degrees of centigrade causes an increase of 6- 12% evaporation in 30 basins, precipitation changes about 71-78% and runoff decreases from -88 to +50%.

Keywords:

Climate Change, Climate variations, Greenhouse gases, Runoff, Basin.