Title: Effect of melting processes on the structure and precipitation of a heavy rainstorm in Beijing

Abstract

Abstract Beijing and its surrounding areas experienced a torrential rainstorm from July 21 to 22, 2012. Previous studies have shown that melting was the main rainwater source in this process. In this paper, melting conversion processes were set to zero (NPMLT test) to analyze the effect of microphysical processes on the structure and precipitation of the convective system. The results showed that without the melting processes, the wind shear at the 700 hPa level decreased, and the wind field in Beijing and its surrounding areas changed. The cold front system moved faster, and the rainfall amount only reached the low rain level, much lower than that during the actual rainstorm. The hydrometeors sources had apparently changed. Though the latent heat release was large and little latent heat absorption occurred in the NPMLT test, the net latent heat did not affect the development of the convective system, and the precipitation was low. Therefore, microphysical processes greatly influence precipitation and convective system.

Authors:

Guo, Chunwei  ^[1];

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Xiao, Hui ^[2]; Wen, Wei ^[3]; Yang, Huiling ^[4]

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+ Show Author Affiliations

1. Institute of Urban Meteorology China Meteorological Administration Beijing China, Environmental Meteorology Forecast Center of Beijing‐Tianjin‐Hebei Beijing China
2. Key Laboratory of Cloud‐Precipitation Physics and Severe Storms, &, Center of Disaster Reduction, Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China, University of Chinese Academy of Sciences Beijing China
3. Institute of Urban Meteorology China Meteorological Administration Beijing China
4. Key Laboratory of Cloud‐Precipitation Physics and Severe Storms, &, Center of Disaster Reduction, Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China

Publication Date:

Thu Feb 27 00:00:00 EST 2020

Sponsoring Org.:

USDOE

OSTI Identifier:

1602069

Alternate Identifier(s):

OSTI ID: 1602070

Resource Type:

Published Article

Journal Name:

Atmospheric Science Letters

Additional Journal Information:

Journal Name: Atmospheric Science Letters Journal Volume: 21 Journal Issue: 5; Journal ID: ISSN 1530-261X

Publisher:

Wiley Blackwell (John Wiley & Sons)

Country of Publication:

United Kingdom

Language:

English