| 2007年秋季特长连阴雨过程分析 |
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| 引用本文： | 冯军,尚学军,马敬霞.2007年秋季特长连阴雨过程分析[J].气象科学,2008,28(Z1). |
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| 作者姓名： | 冯军 尚学军 马敬霞 |
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| 作者单位： | 甘肃省陇南市气象局,甘肃陇南,746000 |
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| 摘 要： | 2007年9月底到10月15日,甘肃省出现大范围、长时间的低温阴雨天气,陇南市9月25日-10月15日的连阴雨天气过程持续时间长范围大,是有气象记录以来首次出现.本文从大的环流形势结构演变分析了此次连阴雨形成的原因:两次东移的乌拉尔山长波槽是此次过程的主要影响系统;强大而稳定的副热带高压使冷暖空气交汇于四川盆地以西以北地区;两条水汽通道保证了充沛的水汽供应.
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| 关 键 词： | 连阴雨 气候 大气环流 |
An analysis on especially steady overcast and rainy process in Gansu in 2007 and application of numerical prediction products |
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| Feng Jun,Shang Xuejun,Ma Jingxia.An analysis on especially steady overcast and rainy process in Gansu in 2007 and application of numerical prediction products[J].Scientia Meteorologica Sinica,2008,28(Z1). |
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| Authors: | Feng Jun Shang Xuejun Ma Jingxia |
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| Institution: | Feng Jun Shang Xuejun Ma Jingxia(Longnan Meteorological Bureau,Gansu Longnan 74600) |
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| Abstract: | An especially steady overcast and rainy process began on Sep.26 and ended on Oct.25,2007 in Gansu Longnan.The duration and amount of precipitation both were exceptional in history.In this paper the reasons why this rare process formed have been analyzed from the viewpoint of structure evolutuon of large-scale atmospheric circulation situation.The main influencing system of this process was two Ural east-moving long wave troughs.Strong and stable subtropical high made cold and warm air masses converged in th... |
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| Keywords: | Overcast and rainy Climate atmospheric circulation |
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