FURTHER RESEARCH ON MECHANISM OF TBO IN SOUTH ASIAN MONSOON REGION

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 depic...

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Published inJournal of Tropical Meteorology Vol. 20; no. 3; pp. 202 - 207
Main Author 李崇银 李琳 阙志萍
Format Journal Article
LanguageEnglish
Published Guangzhou Guangzhou Institute of Tropical & Marine Meteorology 01.09.2014
Subjects
Precipitation
TBO
Time series
Wind
南亚地区
南亚季风
季风区
季风指数
季风降水
机制
过渡特征
South Asia
INW, Asia
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Summary: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.
Bibliography:South Asia; troposphere biennial oscillation （TBO）; monsoon
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.
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ISSN:1006-8775
DOI:10.16555/j.1006-8775.2014.03.002