云南及其邻近地区OLR场的气候特征  

OLR FIELD CLIMATIC FEATURES OVER YUNNAN AND AROUND AREAS

作　　者：解明恩[1] 鲁亚斌[1] 普贵明[1] 

机构地区：[1]云南省气象台

出　　处：《高原气象》1999年第2期185-191,共7页Plateau Meteorology

基　　金：国家"九.五"重中之重科技项目

摘　　要：利用美国ＮＯＡＡ卫星观测的１５年２．５°×２．５°经纬度网格月平均射出长波辐射（ＯＬＲ）资料对云南及其邻近地区的辐射气候特征进行了分析，发现ＯＬＲ分布基本呈纬向型，冬季风期间呈北低南高，夏季风期间则相反。云南ＯＬＲ值大于青藏高原小于热带地区。云南ＯＬＲ变化与青藏高原反相，而与印度、孟加拉湾、中南半岛、南海地区同位相，但年较差最小。云南ＯＬＲ分布与降水有较好的对应关系。年均相关系数为－０．５９。Using NOAA's monthly mean grided Out going Longwave Radiation(OLR) data with the grid of 2.5°×2.5° Lat/lon during the past 15 years,the radiation climatic feature over Yunnan and around areas have been analysed. The result shows OLR distribution is longitudinal pattern,it is low in north region and high in south region during winter monsoon,it is reversed during summer monsoon. OLR mean values over Yunnan is greater than the Qinghai Xizang Plateau and less than South and Southeast Asia tropical regions. The vari ation of OLR over Yunnan and the Qinghai Xizang Plateau is reversed in monthly time phase,but Yunnan is similar to India, Bay of Bengal,Indochina Peninsula and South China Sea in OLR monthly curve features. The annual range of OLR over Yunnan is the least. The OLR curve over Yunnan has better negative relationship with precipitation, the yearly mean correlation coefficient is -0.59.

关 键 词：云南 射出长波辐射 气候特征 OLR场 邻近地区 

分 类 号：P422.6[天文地球—大气科学及气象学]