西北东部地区春季降水异常与印度洋海温的联系  

Relationship between Anomaly Spring Precipitation in Eastern Region of Northwest and Indian Ocean Sea Temperature

作　　者：徐长哲 张烨 

机构地区：[1]辽宁省海城市气象局,辽宁海城114200 [2]辽宁省北票市气象局,辽宁北票122100

出　　处：《安徽农业科学》2014年第21期7149-7150,共2页Journal of Anhui Agricultural Sciences

摘　　要：在对前人研究成果之上,总结西北东部地区春季降水异常的成因,并主要对印度洋海温与我国西北地区降水的关系进行探讨。首先,从西北东部地区春季降水的时间分布特征分析,发现降水整体呈下降趋势,且在1980年以后,降水变率明显加大,旱涝频繁;之后,分析西北地区降水与印度洋海温关系发现,印度洋海温与西北地区降水有明显的相关关系,西北地区降水受西南季风影响十分显著,所以印度洋海温可以作为长期预报的预报因子。Based on the research achievements,causes of spring anomaly precipitation in the eastern region of northwest were summarized.The relationship between Indian Ocean and the precipitation in northwest China was discussed.First of all,from the time distribution analysis,it was found that the overall precipitation had a descending trend,and since 1980,precipitation change rate significantly increased,frequent flood and drought.After that,the relationship between summer precipitation in northwest and Indian Ocean was analyzed,it was found that sea temperature of Indian Ocean has obvious relationship with northwest summer precipitation.The summer precipitation in northwest China was influenced significantly by the southwest monsoon,so the Indian Ocean sea temperature can be used as long-term forecasting factor.

关 键 词：西北东部 春季 异常降水 印度洋海温 联系 

分 类 号：S161.6[农业科学—农业气象学]