内蒙古夏季降水特征及其与全球海温异常的统计关系  

Inner Mongolia Summer Precipitation Features and Its Statistical Relationships with Global Sea Surface Temperature Anomalies

作　　者：高晶[1,2] 王文[1] 包福祥[2] 

机构地区：[1]南京信息工程大学大气科学学院,江苏南京210044 [2]内蒙古气候中心,内蒙古呼和浩特010051

出　　处：《内蒙古气象》2013年第2期10-15,共6页Meteorology Journal of Inner Mongolia

摘　　要：利用1961—2010年内蒙古自治区102个气象站夏季（6—8月）降水量资料,采用EOF、小波分析等方法,对内蒙古地区夏季降水量的空间分布特征和时间演变规律进行了诊断分析。结果表明：内蒙古夏季降水的空间分布既有整体的一致性,也存在东、西部相反变化的差异。近50a来,内蒙古地区夏季降水有减少趋势,并存在6~8年周期变化;对内蒙古夏季降水与前一年1月到当年8月全球逐月海温求相关,选取影响内蒙古夏季（6—8月）降水的海温关键区（26-42°S,93-140°W）及相应的关键时段（当年1—5月）进行分析,内蒙古夏季降水与关键区海温有很好的负相关关系,关键区海温的异常可预示内蒙古夏季降水异常。Using the summer （6-8 month） precipitation data of 102 stations in Inner Mongolia from 1961 to 2010, the temporal and spatial variability feature were studied by the methods of EOF and wavelet analysis. The results showed： the summer precipitation distribution exhibits the common features as well as the spatial differences of east and west. The summer precipitation was decreasing trend over Inner Mongolia region in the last 50 years. Generally, the period of the change was about 6 to 8 years. And in terms of the summer precipitation in Inner Mongolia and monthly mean global SST from January of the previous year to August of that year, study was undertaken of the relationship between them. The key region （26-42°S ,93-140°W） and the key period（1-5 month of that year ） of time which influences the summer precipitation in Inner Mongolia were selected to study. The summer precipitation in Inner Mongolia has a good negative correlation with the key region. The anomaly key region of SST indicated the anomaly summer precipitation in Inner Mongolia.

关 键 词：内蒙古 降水特征 海温异常 关键区 关键时段 

分 类 号：P426.6[天文地球—大气科学及气象学]