青藏高原5月大气热源与黑龙江省盛夏降水的关系

doi:10.3969/j.issn.1673-503X.2020.02.005

Abstract

Abstract:

Based on the summer precipitation data of Heilongjiang province and the National Center for Environment Prediction (NCEP) reanalysis data from 1961 to 2017, we studied the relationship between atmospheric heat source over the Tibetan Plateau and midsummer precipitation in Heilongjiang province as well as the possible mechanism using methods of singular value decomposition, correlation analysis, and regression analysis.The results show that the atmospheric heat source over the Tibetan Plateau in May is closely related to the precipitation in Heilongjiang province in July.When the heat source over the eastern Plateau is strong in May, the precipitation in central Heilongjiang province is significantly low in July.In the presence of strong heat source in May and under the influence of the subtropical westerly jet, atmospheric circulation exhibits similar Silk Road teleconnection waves in middle latitudes and similar East Asia-Pacific teleconnection waves in East Asian coastal regions in July, which makes Heilongjiang province under the control of an anti-cyclonic circulation and thus results in low precipitation in this region.

Key words: Tibetan Plateau, Atmospheric heat source, Midsummer precipitation

CLC Number:

P461

De-jun LOU, Bo WANG, Ji WANG, Xue-mei ZHANG, Yu-lian LIU, Xian-wei ZHOU. Relationship between atmospheric heat source over the Tibetan Plateau in May and midsummer precipitation in Heilongjiang province[J]. Journal of Meteorology and Environment, 2020, 36(2): 34-40.

Figures/Tables 5

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References 24

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Relationship between atmospheric heat source over the Tibetan Plateau in May and midsummer precipitation in Heilongjiang province

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