王绍武,马良,陈振华,张启文. 1986. 赤道太平洋降水与厄·尼诺[J]. 气象学报, 44(4):403-410, doi:10.11676/qxxb1986.058
赤道太平洋降水与厄·尼诺
THE WESTERN AND CENTRAL PACIFIC RAINFALL AND THE EL NINO EVENTS
投稿时间:1984-12-20  修订日期:1985-05-25
DOI:10.11676/qxxb1986.058
中文关键词:  
英文关键词:
基金项目:
作者单位
王绍武 北京大学地球物理系 
马良 北京大学地球物理系 
陈振华 北京大学地球物理系 
张启文 国家海洋局海洋预报中心 
摘要点击次数: 1816
全文下载次数: 1973
中文摘要:
      根据1899年-1982年赤道太平洋降水资料,研究了10月-12月降水量的时空变化.发现中太平洋最主要的特点是赤道地区与20°N以北及10°S以南变化相反.与赤道东太平洋海温变化比较证实,海温高时中太平洋多雨.分析赤道中太平洋多雨及少雨时海平面气压场表明,多雨时赤道低压偏东,南太平洋高压弱,而澳大利亚气压上升.最后指出,1982-1983年的厄·尼诺事件,就其伴随的环流与气候异常来讲,与以前的事件并无本质上的不同,但其强烈程度则是几十年来少见的.
英文摘要:
      The variations of rainfall in the Western and Central Equatorial Pacific are investigated by using the three month rainfall (Oct.to Dec.) deta set for the period from the years 1899 to 1982.It is found that the main characteristic of the Central Pacific rainfall between the area 20°N-10°S and north or south is the contrary to each other.The rainfall in the Central Pacific and the sea surface temperature in the Eastern Equatorial Pacific are highly positive correlated.An analysis of the sea level pressure indicates that the equatorial low is moved to the east near the dateline,the subtropical high is weakened in the Southern Pacific and the high pressure is predominated over the Australia,when there is plentiful precipitation in the Central Pacific.It is noted that the basic characteristics of 1982-83 El Nino event were not unusual by considering its influence on the rainfall and the atmospheric circulation from other events,but its intensity might be the strongest one in the last several decades.
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