ENSO事件对我国季节降水和温度的影响  

Reappraisal of the Influence of ENSO Events on Seasonal Precipitation and Temperature in China

作　　者：刘永强[1] 丁一汇[1] 

机构地区：[1]中国气象科学研究院

出　　处：《大气科学》1995年第2期200-208,共9页Chinese Journal of Atmospheric Sciences

摘　　要：对近４０年来ＥＮＳＯ当年和次年我国季节降水和温度异常进行了合成分析和信度检验。结果表明，ＥＮＳＯ当年我国以少雨、低温为主，次年则相反。降水和温度异常季节变化也基本呈相反趋势。长江中下游地区显著降水异常并不发生在夏季，而在ＥＮＳＯ当年春、秋季和次年春季；东北地区最显著的低温也不在夏季，而在ＥＮＳＯ当年秋季至次年春季。根据本文。结果对目前ＥＮＳＯ影响研究中的有关问题提出了看法。This paper describes the composite analyses of seasonal precipitation and temperature in China during ENSO events in last 40 years and test of confiedence leveL It is shown that both the rainfall and temperature are lower than normal on the whole in the ENSO year and almost opposite anomalies occur in the following year in most part of China. The seasonal rainfall and temperature departures evolve with almost opposite phases. The seasonal rainfall anomalies in the middle and lower reaches of the Yangtze River with certain level of statistical confidence occur in spring and autumn of the ENSO year and in spring of the following year, rather than in springs of both year. The most significant cooling in Northeast China also appears in autumn of the ENSO year through spring of the following year, rather than in the summers. Finally, some results on ENSO influence previously obtained are reappraised based on the present analyses.

关 键 词：降水 温度异常 季节变化 合成分析 厄尔尼诺 

分 类 号：P426.615[天文地球—大气科学及气象学] P423