Connection between precipitation of low latitude plateau in dry season and Indian Burma trough

doi:10.14088/j.cnki.issn0439-8114.2020.14.009

HUBEI AGRICULTURAL SCIENCES ›› 2020, Vol. 59 ›› Issue (14): 52-55.doi: 10.14088/j.cnki.issn0439-8114.2020.14.009

• Resource & Environment • Previous Articles Next Articles

Connection between precipitation of low latitude plateau in dry season and Indian Burma trough

DENG Jian-bo¹, LIU Kui², TANG Xiao-nan³, ZHOU Bi¹

1. Institute of Hunan Meteorological Sciences/Key Laboratory of Hunan Disaster Prevention and Reduction, Changsha 410118,China;
2. Center for Monsoon System Research, Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China;
3. Changsha Meteorological Observatory,Changsha 410205,China

Received:2019-11-20 Online:2020-07-25 Published:2020-09-14

Abstract

Abstract: Based on monthly atmospheric circulation reanalysis data from Global Modeling and Assimilation Office（GMAO）and Goddard Earth Sciences Data and Information Sciences Center（GES DISC） and precipitation of 148 weather stations in low latitude plateau region from 1979—2012, the relationship between the India Burma trough and the precipitation of low latitude plateau in dry season was investigated by using correlation and synthesis method. The results showed that the India Burma trough was an important factor affecting the precipitation of low latitude plateau in dry season. Water vapor was transported to the low latitude plateau region by southerly wind in front of the India Burma trough. Strong vertical ascending motion in front of the trough promoted the CISK physic process and caused rainfall when met the cold and dry northerlies in the southeast of the Tibet Plateau. The positive feedback mechanism of atmospheric barocline development and radial circulation which would hamper the dispersion process of atmospheric barocline were established when the trough grows strong. As a result, the configuration of the meteorological filed can be affected, which further influenced the precipitation of this region in dry season.

Key words: India Burma trough, low latitude plateau, dry season rainfall, CISK mechanism

CLC Number:

P426.6
P434

DENG Jian-bo, LIU Kui, TANG Xiao-nan, ZHOU Bi. Connection between precipitation of low latitude plateau in dry season and Indian Burma trough[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(14): 52-55.

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Connection between precipitation of low latitude plateau in dry season and Indian Burma trough

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