FURTHER RESEARCH ON MECHANISM OF TBO IN SOUTH ASIAN MONSOON REGION  

作　　者：李崇银 李琳 阙志萍 

机构地区：[1]Institute of Meteorology and Oceanography, PLA University of Science and Technology [2]Institute of Atmospheric Physics, Chinese Academy of Sciences [3]Beijing Institute of Applied Meteorology [4]Graduate University of the Chinese Academy of Sciences

出　　处：《Journal of Tropical Meteorology》2014年第3期202-207,共6页热带气象学报（英文版）

基　　金：National Natural Science Foundation of China(U0833602);National Grand Fundamental Research 973 Program of China(2010CB950400)

摘　　要：The results of this study prove that there is significant troposphere biennial oscillation(TBO) in the South Asian climate, especially with the Indian summer monsoon rainfall. In order to explore the mechanism of TBO in the South Asian region, we defined a unified South Asian monsoon index to depict South Asian summer monsoon(SASM) and South Asian winter monsoon(SAWM) and the transition features between SASM and SAWM. Through further analysis, the connection between the abnormity of SASM and SAWM was discovered. Normally, a strong SAWM is beneficial for a weak SASM later, while a weak SAWM favors a strong SASM. Meanwhile, a strong SASM is favorable for a weak SAWM and a weak SAWM always happens after a weak SASM. Such results suggest the evolution of the South Asian monsoon, which may be an important mechanism to excite TBO in South Asia.The results of this study prove that there is significant troposphere biennial oscillation （TBO） in the South Asian climate, especially with the Indian summer monsoon rainfall. In order to explore the mechanism of TBO in the South Asian region, we defined a unified South Asian monsoon index to depict South Asian summer monsoon （SASM） and South Asian winter monsoon （SAWM） and the transition features between SASM and SAWM. Through further analysis, the connection between the abnormity of SASM and SAWM was discovered. Normally, a strong SAWM is beneficial for a weak SASM later, while a weak SAWM favors a strong SASM. Meanwhile, a strong SASM is favorable for a weak SAWM and a weak SAWM always happens after a weak SASM. Such results suggest the evolution of the South Asian monsoon, which may be an important mechanism to excite TBO in South Asia.

关 键 词：South Asia troposphere biennial oscillation （TBO） MONSOON 

分 类 号：P532[天文地球—古生物学与地层学] TP368.33[天文地球—地质学]