ENSO对南沙海域气候状况的影响  

THE EFFECT OF ENSO ON THE CLIMATIC STATE IN NANSHA

作　　者：柯东胜[1] 许时耕[1] 

机构地区：[1]国家海洋局南海分局

出　　处：《气象学报》1997年第4期506-511,共6页Acta Meteorologica Sinica

基　　金："八五"国家重大科技攻关专项

摘　　要：对１９６１—１９９０年（部分资料到１９９４年）期间在南沙海域的观测资料，进行了统计分析，其结果表明：在ＥＮＳＯ发生的当年，南沙海域的海平面气压呈正距平，年降水量明显偏少，热带气旋活动的日数一般偏少；在历次ＥＮＳＯ过程中，南沙海域的总云量与ＳＯＩ的变化趋势基本一致。Based on the data observed from 1961 to 1990 (some data to 1994),this paper statistically analyzes the effect of ENSO on atmospheric pressure,total cloud cover,precipitation and numbers of tropical storm in Nansha waters ,and discussed the comprehersive effect of ENSO on the climatic state in Nansha.The results show:(1)in the year when ENSO occurring,the atmospheric pressure in Nansha waters is all positive anomaly for many years accounting;(2)the total cloud cover anomaly in Nansha waters is basically identical with the variation trend of SOI in each ENSO duration;(3)the annual precipitation in Nansha waters is obviously little in the year when ENSO occurring (or next year);(4)the effect of ENSO on the annual numbers of tropic cyclone presents ,there is fewer in the year when El Nino event occurring,more tropic cyclones next year and mainly occurring in autumn and winter.

关 键 词：南沙海域 气候 厄尔尼诺 海洋气候 

分 类 号：P732.5[天文地球—海洋科学]