【作者】 杨文艳；

【导师】 王谦谦；

【作者基本信息】 南京气象学院 ， 气象学， 2003， 硕士

【摘要】 本文在分析了辽宁省降水的基本气候特征的基础上，重点分析了辽宁汛期多少雨年同期环流影响因子和前期海温影响因子，结果表明：①辽宁降水气候特征东西部差异明显，年降水量有减少趋势，汛期(7～8月)降水异常最多发，降水异常的空间分布不同年代有不同的位相特征。②在周期上，辽宁四季降水的3年左右振荡特征较为一致，夏季和汛期的10～12年周期显著。③辽宁汛期多少雨年同期华北、东北与之同位相，江南与之反位相。④辽宁夏季多雨水汽来源于西南夏季风和我国东部海域，汛期降水异常与西南、东南夏季风，极涡，西风槽以及西太平洋副高活动关系密切。⑤西太平洋和南大西洋海温关键区冷暖水年结合对辽宁汛期多少雨年有很好的指示作用。两关键区SSTA周期特征反映辽宁汛期降水异常的不同长度周期特征，且有很好的互补关系。更多还原

【Abstract】 Based on the baseline climatic characteristics analysis of precipitation in Liaoning, the discovery is then chiefly to study the effect of the corresponding period circulation and prophase SSTA on rainfall in flood season in Liaoning .Some conclusions as followed:(1)There are many obvious differences in climatic characteristics between eastern and western parts of Liaoning .precipitation decrease yearly . The precipitation anomalies take place mostly in flood season and it’s spatial distribution vary with the changes of decades . (2)The precipitation shows periodic variation of 2-4 years in the four seasons and significant 10-12 years periodic variation in summer and flood season.(3) Liaoning flood season precipitation anomalies in phase with HuaBei and DongBei ,Jiangnan inverse . (4)Flood season precipitation anomalies has a good correlations with southwest and southeast summer monsoon , polar vortex , west wind trough and west Pacific high (5)The SSTA anomalies of West Pacific Key regions combine with south Atlantic Key regions has a good predict to the flood season precipitation anomalies in Liaoning areas. The periodic variation of SSTA of the two Key regions combine reflect vary length periodic variation of flood season precipitation anomalies in Liaoning areas.更多还原