EI Ni■o 事件对不同区域风场异常影响的差异

DIFFERENCE IN WINDFIELD ANOMALY EFFECT OVER THE STUDY REGIONS DURING EI Nio EPISODE

利用 NMC 850 hPa 月平均风场资料,对赤道太平洋-印度洋区域、热带两大洋过渡区域、东亚-西太平洋区域环流异常受 E事件影响程度作了估计。结果显示,3个区域环流异常受 E事件影响差异明显,从而揭示出某些区域环流异常成因的多元性。

In the context of NWC 850 hPa monthly mean wind data,estimation is made of the degree to which the E1 Nino exerts influence on circulation anomaly in the equatorial Pacific- the Indian Ocean,the transition between the Pacific and Indian Ocean and East Asia-western Pacif- ic.Results show that great difference exists in the degree among the research areas,thereby dis- covering that the causes of some of regions are multiple.