抚顺近50年各季气温和降水异常时空特征分析

根据世界气象组织气温二倍标准差和降水量业务化距平百分率标准，分析了抚顺3站1961—2010年春季（3—5月）、夏季（6—8月）、秋季（9—11月）、冬季（12—2月）和汛期（6—9月）的平均气温、降水量的异常特征。结果表明，抚顺地区易出现气温偏高和降水偏多，冬季是最易出现异常的季节；从年代演变来看，气温和降水异常偏高频数在20世纪90年代以后呈增长趋势，异常偏低频数在20世纪60—70年代呈小幅波动；从区域划分来看，全区春季和夏季易出现气温异常偏高，全区夏季和冬季易出现降水异常偏多，降水异常偏少集中在全区的秋季。

Spacial and Temporal Characteristics of Temperature and Precipitation Anomalies in Every Season of Recent Five Decades in Fushun

In this study, the anomalies of the average temperature and precipita-tion in spring （March to May）, summer （June-August）, autumn （September-November）, winter （December-February） and flood season （June-September） from 1961 to 2010 were analyzed according to the temperature standard deviation prin-ciple and precipitation abnormity per-centage published by World Meteorolog-ical Organization. The results showed that Fushun was characterized by high temperature and frequent precipitation, and the anomalies mostly occurred in winter. In addition, the frequency of ab-normally high temperatures and frequent precipitations gradually increased from 1990s, and that of abnormally low tem-perature and few precipitation slightly fluctuated from 1960s to 1970s. The ab-normally high temperatures mostly oc-curred in spring and summer, the abnor-mally frequent precipitations in summer and winter while the abnormally few precipitations mostly occurred in autumn in Fushun.