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Paper Information

Journal:   DESERT (BIABAN)   2003 , Volume 8 , Number 2; Page(s) 179 To 191.
 
Paper: 

SIMULATION OF CHANGES IN CLIMATIC PARAMETERS OF IRAN UNDER DOUBLED CO2 CONCENTRATION USING GENERAL CIRCULATION MODELS

 
 
Author(s):  KOUCHAKI AVAZ, NASSIRI M., SHARIFI H.R., SOLTANI A.A.F., KAMALI GH.A.
 
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Abstract: 
Recent predication have shown that if current trend in CO2 emission to atmosphere continues, the CO2 concentration will be doubled before the end of this century leading to a drastic changes in climatic patterns all around the world. To predict the probable effects of increased CO2 concentration in Iran, changes in climatic indices were studied using General Circulation Models (GCM"s). The simulation results of GFDL models showed an overall increase in temperature with decreasing gradient from north to south and west to east, but this increase was mainly during spring and summer. Annual precipitation was predicted all over the country to increase by 1 to 35%. However, this increase was during autumn and winter and a decrease in rainfall was predicted for spring and summer. Radiation was hardly affected by increased CO2 level compared to other climatic indices. Mean annual temperature in Tabriz and Mashhad increased by 4.3 and 3.4 degrees centigrade with no considerable changes in annual precipitation. Details on climatic conditions of these two presentative western and eastern cities under doubled CO2 concentration are discussed.
 
Keyword(s): CLIMATE CHANGE, GCM, CO2 DOUBLING
 
References: 
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