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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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