HIRS-Tb12揭示的亚洲夏季风建立的气候学特征及与华东旱涝  

THE CLIMATIC CHARACTERISTIC OF ASIA SUMMER MONSOON ONSET AND DROUGHT/FLOOD IN EAST CHINA AS REVEALED BY HIRS-TB12

作　　者：施宁[1] 蒋尚城[2] 严明良[3] 

机构地区：[1]江苏省气象科学研究所,江苏南京210008 [2]北京大学大气科学系,北京100871 [3]江苏省气象台,江苏南京210008

出　　处：《热带气象学报》2002年第2期173-181,共9页Journal of Tropical Meteorology

基　　金：国家"九.五"重中之重科技项目(96-908-05-06-08)资助

摘　　要：HIRS-Tb12资料和常规资料对比分析表明:南、北半球副热带高压区域具有不同的温度、湿度和垂直运动的结构特征,HIRS-Tb12资料能很好地表征出这些特征。当南海地区、阿拉伯海地区高压迅速减弱,且HIRS-Tb12小于200 W/m2时,分别对应于南海季风、阿拉伯海和盂加拉湾季风爆发。华东地区显著干旱年和显著雨涝年两半球副热带高压下沉区演变趋势具有显著的差异。By using the HIRS-TB12 data observed from NOAA satellites and comparing with the NCEP/NCAR data, we find that the subtropical high in Northern and Southern Hemispheres have different features of temperature, moisture and vertical motion. When the South China Sea high and the Arabia high weaken rapidly and the pentad-mean HIRS-TB12 of both areas are less than 200 W/m2, the South China Sea monsoon and the Arabia and the Bay of Bengal monsoon come to onset respectively. The relations of drought/flood in East China with the South China Sea monsoon onset data and intensity, the variation of the position and intensity of the subtropical high in both Northern and Southern Hemispheres have also been discussed.

关 键 词：HIRS-Tb12 副热带下沉区 亚洲季风 华东旱涝 

分 类 号：P462.41[天文地球—大气科学及气象学]