2109号台风“卢碧”复杂路径与强降水成因分析

doi:10.3969/j.issn.1673-503X.2023.05.001

Abstract

Abstract:

Using the data of encrypted automatic meteorological observation station, typhoon real track data, NECP reanalysis data, and FY-4A satellite TBB data, the causes of the complex path and heavy rain of typhoon "LUPIT" (No.2109) were comprehensively analyzed.The results show that the strong subtropical high in late July and the strong monsoon convergence zone along the coast of South China provide good energy and water vapor conditions for the offshore generation and development of typhoons.The slow movement of the typhoon, the strengthening of the upturning cooling effect of the seawater, the increase of vertical wind shear in the environment, and the weakening of the divergence conditions in the upper level make it impossible for typhoon "LUPIT" to strengthen rapidly offshore.The subtropical high ridge line of tropical high-pressure retreats rapidly to the south, and the change of deep guiding airflow and the interaction of the two typhoons make "LUPIT" appear an unusual "S" path.Water vapor transported by the southwest monsoon, the strong influence of low-level jets, the typhoon′s inverted trough, and the asymmetry of the typhoon′s structure are the main reasons for the uneven distribution of heavy rain and falling areas in Zhangzhou.

Key words: Tropical storm, Complex path, Double typhoons, Steering flow, Heavy rain

CLC Number:

P458.1⁺24

Hui LIN,Jingjing CHENG,Yibin ZHUANG,Yidan HUANG,Jinpeng CHEN,Xiaoxiang HONG,De'nan YANG. Analysis of the causes of complex path and heavy rain of typhoon "LUPIT"(No.2109)[J]. Journal of Meteorology and Environment, 2023, 39(5): 1-8.

Figures/Tables 7

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Analysis of the causes of complex path and heavy rain of typhoon "LUPIT"(No.2109)

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