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Proceedings Paper

Numerical simulation of terrain effects in a backflow event that occurred over North China
Author(s): Shoubao Zhang; Pinwen Guo; Yingxin Zhang
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Paper Abstract

Much attention has been paid to terrain effects on planetary scale. Few works have addressed these impacts at finer scales. In this study, the terrain effect on a backflow weather occurred over North China during December 22 to 23, 2002 was investigated using the Pennsylvania State University-NCAR Fifth-Generation Mesoscale Model (MM5), version 3. Numerical simulation results show that the mountains in the western North China play a very important role in the backflow precipitation. The cold air from North East Plain was obstructed by the Taihang Mountain. The flat topography of the plain reduced the thickness of the cold air, its vertical velocity, and the intenseness of the precipitation. The results indicate that the cold air was accumulated in the windward of the mountain. This accumulation resulted in increased thickness of the cold air. Humid air could climb up to the top and amplify the precipitation.

Paper Details

Date Published: 27 September 2006
PDF: 8 pages
Proc. SPIE 6298, Remote Sensing and Modeling of Ecosystems for Sustainability III, 62981E (27 September 2006); doi: 10.1117/12.674004
Show Author Affiliations
Shoubao Zhang, Nanjing Univ. of Information Science and Technology (China)
Hebei Meteorological Bureau (China)
Pinwen Guo, Nanjing Univ. of Information Science and Technology (China)
Yingxin Zhang, Hebei Meteorological Bureau (China)
State Key Lab. of Severe Weather (China)

Published in SPIE Proceedings Vol. 6298:
Remote Sensing and Modeling of Ecosystems for Sustainability III
Wei Gao; Susan L. Ustin, Editor(s)

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