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Study on Characteristics of wind in Low-level Air in Anqing from 2004 to 2008

Meteorological and Environmental Research 2011年第11期2卷 8-12页

作者： CHEN Long-hu,WU Yue-you,WANG Wen-bing Anqing Meteorological Bureau in Anhui Province,Anqing 246001,China

[Objective] The characteristics and rules of low-level air in Anqing from 2004 to 2008 were studied.[Method] By dint of L waveband radar air-exploration meteorological data in Anqing station from 2004 to 2008,the characteristics in the lower air in Anqing were studied based on wind speed profile and wind rose profile.[Result] Anqing,which locates in the lower reaches of Yangtze River,was influenced by monsoon and wind seasonal changes were *** northeast wind prevailed in the near-ground layer and average annual frequency was 34.6%.The still wind frequency was relatively high and annual average reached 18.5%.The frequency of southwest wind in the summer-half-year *** frequency of wind from 700 m to the upper air was relatively diverged,and it was mainly westerly to 3 000 m *** ot the wind speed profile,wind speed in the height below 700 m enlarged and then it slowed down from 700 to 2 000 m high and in winter the wind above 2 000 m fastened dramatically.[Conclusion] The characteristics of wind speed and wind direction in Anqing in recent years were summarized,which provided reference for climate changes in Anqing.

关键词： Pollution Atmosphere boundary wind rose profile China

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