CISK,EVAPORATION-WIND FEEDBACK MECHANISM AND 30—60 DAY OSCILLATIONS IN THE TROPICAL ATMOSPHERE  

作　　者：赵强 付遵涛 陈炯 刘式适 

机构地区：[1]Department of Geophysics,Peking University,Beijing 100871

出　　处：《Acta meteorologica Sinica》1997年第2期164-175,共12页

基　　金：This work is supported by the National Natural Science Foundation of China.

摘　　要：A baroclinic semi-geostrophic model with evaporation-wind feedback mechanism(EWFM) and CISK is established,two non-dimensional parameters a and η are introduced to represent EWFM and CISK,respectively.Analytic solutions of the model system are obtained,dynamics analyses and the model atmosphere calculations further confirm that EWFM and CISK are very important physical processes in leading to the low-frequency oscillations in the tropics.A baroclinic semi-geostrophic model with evaporation-wind feedback mechanism(EWFM) and CISK is established,two non-dimensional parameters a and η are introduced to represent EWFM and CISK,respectively.Analytic solutions of the model system are obtained,dynamics analyses and the model atmosphere calculations further confirm that EWFM and CISK are very important physical processes in leading to the low-frequency oscillations in the tropics.

关 键 词：CISK(conditional instability of the second kind) EWFM (evaporation-wind feedback mechanism) LFO(low-frequency oscillation) EWFM-CISK-Rossby wave EWFM-CISK-Kelvin wave 

分 类 号：P433[天文地球—大气科学及气象学]