阿榮旗短時強(qiáng)降水的環(huán)流背景和物理量場特征分析

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作者簡介 趙岳冀（1988—），女，黑龍江訥河人，工程師，主要從事生態(tài)氣象服務(wù)工作。*通信作者：陳高娃（1983—），女，內(nèi)蒙古阿榮旗人，工程師，主要從事預(yù)報(bào)預(yù)測工作，E-mail：282693821@qq.com。

收稿日期 2023-06-30

Analysis of Circulation Background and Physical Quantity Field Characteristics of Short-term Heavy Rainfall in Arong Banner

Zhao Yue-ji et al（ Hulunbuir Meteorological Bureau， Hulunbuir， Inner Mongolia 021000）

Abstract The main circulation background for generating short-term heavy precipitation is the high-altitude cold vortex and trough. Analyzing the physical quantity field of short-term heavy precipitation， it is found that the average specific humidity at 850 hPa and 700 hPa during the occurrence of short-term heavy precipitation was 6.00 and 9.50 g/kg， respectively. The average value of the entire layer of precipitable water was 20.50 mm， and the average value of the K index was 30.60 ℃. The coefficient of divergence was small and the degree of dispersion was small， which has a relatively good indicating significance for generating short-term heavy precipitation.

Key words Short-term heavy precipitation： Circulation background; Physical quantity field

摘要 產(chǎn)生短時強(qiáng)降水主要環(huán)流背景為高空冷渦和槽，分析短時強(qiáng)降水物理量場得出：發(fā)生短時強(qiáng)降水時850 hPa和700 hPa平均比濕分別6.00 和9.50 g/kg，平均整層可降水量為20.50 mm，K指數(shù)平均值為30.60 ℃，變異系數(shù)較小，離散程度小，對產(chǎn)生短時強(qiáng)降水有相對較好的指示意義。（剩余5532字）