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Effects of microphysics parameterization schemes on the simulation of a heavy rainfall event in Shanghai
Author(s): Yu Kan; Chaoshun Liu; Fengxue Qiao; Yanan Liu; Wei Gao; Zhibin Sun
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Paper Abstract

A typical heavy rainfall event occurred in Shanghai on September 13, 2009 was simulated using the Weather Research and Forecasting Model (WRF) to study the impact of microphysics parameterization on heavy precipitation simulations. Sensitivity experiments were conducted using the cumulus parameterization scheme of Betts-Miller-Janjic (BMJ), but with three different microphysics schemes (Lin et al, WRF Single-Moment 5-class scheme (WSM5) and WRF Single-Moment 6-class scheme (WSM6)) under three-way nested domains with horizontal resolutions of 36km, 12km and 4km. The results showed that all three microphysics schemes are able to capture the general pattern of this heavy rainfall event, but differ in simulating the location, center and intensity of precipitation. Specifically, the Lin scheme overestimated the rainfall intensity and simulated the rainfall location drifting northeastwards. However, the WSM5 scheme better simulated the rainfall location but stronger intensity than the observation, while the WSM6 scheme better produced the rainfall intensity, but with an unrealistic rainfall area.

Paper Details

Date Published: 19 September 2016
PDF: 10 pages
Proc. SPIE 9975, Remote Sensing and Modeling of Ecosystems for Sustainability XIII, 99750U (19 September 2016); doi: 10.1117/12.2237281
Show Author Affiliations
Yu Kan, East China Normal Univ. (China)
Chaoshun Liu, East China Normal Univ. (China)
Colorado State Univ. (United States)
Fengxue Qiao, East China Normal Univ. (China)
Yanan Liu, East China Normal Univ. (China)
Wei Gao, East China Normal Univ. (China)
Colorado State Univ. (United States)
Zhibin Sun, Colorado State Univ. (United States)


Published in SPIE Proceedings Vol. 9975:
Remote Sensing and Modeling of Ecosystems for Sustainability XIII
Wei Gao; Ni-Bin Chang, Editor(s)

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