江西怀玉山区域“22·6”大暴雨短时强降水特征分析

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Abstract The article uses the Rapid Response System for Heavy Precipitation Warning Services in Shangrao City to query precipitation data.Based on the land surface data assimilation system products of the China Meteorological Administration and the fifth generation atmospheric reanalysis data from the European Centre for Medium Range Weather Forecasts,an analysis was conducted on the "22.6" continuous short-term heavy precipitation event that occurred in the Mount Huaiyu area of Jiangxi Province.The results show that since 2022-06-17 T 20:00/2022-06-21 T 20:00,the Mount Huaiyu area in Jiangxi Province has experienced a prolonged heavy precipitation process,with a total of 37 short-term heavy precipitation events recorded.The "southern and northern mountain" type of precipitation events occurred the most frequently,accounting for 22.2％ of the total number of short-term heavy precipitation events.The northern mountainous area has become the main concentration of heavy rainfall,with a total of 25 short-term heavy precipitation events,accounting for as much as 67.6％.When short-term heavy precipitation occurs,the atmospheric circulation over the Mountain Huaiyu area exhibits typical characteristics,including divergence in the middle and upper layers,significant convergence of water vapor flux in the middle and lower layers,and strong vertical upward movement.In the complex terrain area of Mountain Huaiyu,the effects of valley winds and mountain winds are particularly significant,jointly leading to the frequent occurrence of small-scale wind convergence zones.

Key words： short-term heavy precipitation water vapour flux dispersion valley winds

Received: 04 June 2024

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	Lai Shiqi
	Zheng Lijun
	Wang Xuan
	Wu Wenxin
	Yan Qingtao

Cite this article:

Lai Shiqi,Zheng Lijun,Wang Xuan等. Analysis on the characteristics of short-term heavy precipitation of "22·6" heavy rainstorm in Mount Huaiyu area,Jiangxi Province[J]. Meteorological Hydrological and Marine Instrument, 2025, 42(2): 86-90.

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http://www.qxswhy.com/EN/ OR http://www.qxswhy.com/EN/Y2025/V42/I2/86

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