春季热带地区OLR低频振荡及其与长江中下游连阴雨

施宁, 朱盛明. 春季热带地区OLR低频振荡及其与长江中下游连阴雨[J]. 大气科学, 1991, 15(2): 53-62. DOI: 10.3878/j.issn.1006-9895.1991.02.07

引用本文:

施宁, 朱盛明. 春季热带地区OLR低频振荡及其与长江中下游连阴雨[J]. 大气科学, 1991, 15(2): 53-62. DOI: 10.3878/j.issn.1006-9895.1991.02.07

Shi Ning, Zhu Shengming. Low frequency oscillation of OLR over tropics during spring and its relationship with persistent rainy period in middle and lower reaches of Yangtze River[J]. Chinese Journal of Atmospheric Sciences, 1991, 15(2): 53-62. DOI: 10.3878/j.issn.1006-9895.1991.02.07

Citation:

Shi Ning, Zhu Shengming. Low frequency oscillation of OLR over tropics during spring and its relationship with persistent rainy period in middle and lower reaches of Yangtze River[J]. Chinese Journal of Atmospheric Sciences, 1991, 15(2): 53-62. DOI: 10.3878/j.issn.1006-9895.1991.02.07

春季热带地区OLR低频振荡及其与长江中下游连阴雨

施宁,
朱盛明

Low frequency oscillation of OLR over tropics during spring and its relationship with persistent rainy period in middle and lower reaches of Yangtze River

摘要: 本文应用NOAA卫星接收的1975—1983年向外长波辐射(OLR)资料研究了春季热带地区低频振荡的基本特征,得出东半球热带地区盛行周期为30天左右的低频振荡,这种振荡最显著的区域在0—10°S、70—90°E的印度洋地区。文章阐述了过渡季节这种低频振荡的经向和纬向传播特征。本文还进一步指出,在热带低频振荡的不同阶段,ITCZ、北半球副热带以及西风带环流系统也呈现出显著的周期变化,并查证了低频振荡作为长江中下游连阴雨和连晴过程的背景事实。因此本研究工作也为长江中下游连阴雨和连晴天气的中、长期可预报性提供

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