黑料网

Abstract

S ystan province is located in the eastern part of the country. It is subjected to Asian south eastern monsoon. At planetary scale, this area is located between tropical systems and sub- tropical ones. This leads to the occurrence of the 120 days Systan?s local wind regime (Lovar). The velocity of this wind is very high. This wind is capable of generating huge amount of dust particles as well as sand storms in the region. This will lead to a lot of inconveniences as far as the human life is concerned. This study is fed by V and U wind data corresponding with East-West and North-South wind system. The research method is based on correlation regression technique. This study suggests that recent global warming creates changes in the magnitude and velocity of this local wind regime. According to the yearly rate coefficient, maximum wind velocity shows a 0.376 meter/second increase. Moreover, the corresponding monthly velocity increase coefficient on average is 0.9 meter/second. However, May?s figure indicates the highest value (0.244 meter/second). This in turn, is associated with the increase in the wind velocity in warm periods. This could be explained by the increase in temperature and deepening of the surface thermal low pressure which is associated with the secondary low pressure monsoon system

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