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中文摘要：
2010年云南发生了一次近10年来比较严重的秋季连阴雨天气。利用云南122个气象站的观测资料和NCEP／NCAR再分析资料对这次连阴雨天气发生的成因和物理机制进行了诊断和分析。结果表明，云南的秋季连阴雨天气与500hPa上乌拉尔山地区脊前的低槽或东亚大槽的加深南压、孟加拉湾低压槽偏强以及活跃的西南暖湿气流有密切联系，在云南地区的大气异常状态表现出明显的湿度增加、上升运动加强的特征。另外，还进一步表明850hPa经向风15～25天低频振荡在云南秋季连阴雨明显年和不明显年表现出不同的特征。连阴雨明显年，850hPa经向风主要由南半球低纬地区向北半球20°N-30°N传播，这表明当南半球低频扰动能量较强、季风南退较晚时，有低频振动能量传输到北半球低纬度，有利于南半球低纬度地区的水汽向北半球低纬度地区输送；连阴雨不明显年则相反。
英文摘要：
Yunnan suffered from a severe lasting rainy in autumn in 2010. The physical mechanism and causes of this weather process were investigated. The results showed that Yunnan autumn lasting rainy are closely related to trough-line near Ural Mountains or deepen Eastern Asia Trough, stronger trough in bay of Bengal, southwest warm moist air flows. Atmospheric abnormal in Yunnan display the characteristics of increasing humidity and strengthen ascending motion. Otherwise, the 15 -25 days low frequency oscillation of meridianal wind relating to disturbance energy and monsoon exhibits obviously different features during apparent and in apparent lasting rainy, with the oscillation propagation northward to 20°N- 30°N in apparent rainy year, and vice versa.
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