Excitation of Low-level Jet as Seen by GOES (I-O) Satellite off the Somali Coast

作     者：P.N.Mahajan V.R.Mujumdar S.P.Ghanekar 

作者机构：Indian Institute of Tropical MeteorologyPune-411005IndiaIndian Institute of Tropical MeteorologyPune-411005IndiaIndian Institute of Tropical MeteorologyPune-411005India 

出 版 物：《Advances in Atmospheric Sciences》 (大气科学进展（英文版）)

年 卷 期：1989年第6卷第4期

页      面：475-482页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 0816[工学-测绘科学与技术] 0825[工学-航空宇航科学与技术] 

主　　题：I-O Excitation of Low-level Jet as Seen by GOES 

摘      要：The intensification of a low-level jet off the Somali coast, as observed through GOES (I-O) satellite during Indian summer monsoon 1979 has been studied. Excitation of Low-level cross-equatorial flow in the western Indian ocean results from an interaction between extratropical perturbations moving eastward across the South African-Malgassy region of the Southern Hemisphere. This excitation occurs 2-3 days after the first appearance of a northward propagation cold front across the South African-Malgassy region. Inten-sification of cross-equatorial flow is followed by an increase in rainfall activity along the west coast of India after 3-4 days. The study reveals that this association can be used to forecast an increase in rainfall activity along the west coast of India 5-7 days in advance.