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The Impact of Microphysics on Intensity and Structure of Hurricanes and Mesoscale Convective SystemsDuring the past decade, both research and operational numerical weather prediction models, e.g. Weather Research and Forecast (WRF) model, have started using more complex microphysical schemes originally developed for high-resolution cloud resolving models (CRMs) with a 1-2 km or less horizontal resolutions. WRF is a next-generation mesoscale forecast model and assimilation system that has incorporated modern software framework, advanced dynamics, numeric and data assimilation techniques, a multiple moveable nesting capability, and improved physical packages. WRF model can be used for a wide range of applications, from idealized research to operational forecasting, with an emphasis on horizontal grid sizes in the range of 1-10 km. The current WRF includes several different microphysics options such as Purdue Lin et al. (1983), WSM 6-class and Thompson microphysics schemes. We have recently implemented three sophisticated cloud microphysics schemes into WRF. The cloud microphysics schemes have been extensively tested and applied for different mesoscale systems in different geographical locations. The performances of these schemes have been compared to those from other WRF microphysics options. We are performing sensitivity tests in using WRF to examine the impact of six different cloud microphysical schemes on precipitation processes associated hurricanes and mesoscale convective systems developed at different geographic locations [Oklahoma (IHOP), Louisiana (Hurricane Katrina), Canada (C3VP - snow events), Washington (fire storm), India (Monsoon), Taiwan (TiMREX - terrain)]. We will determine the microphysical schemes for good simulated convective systems in these geographic locations. We are also performing the inline tracer calculation to comprehend the physical processes (i.e., boundary layer and each quadrant in the boundary layer) related to the development and structure of hurricanes and mesoscale convective systems.
Document ID
20080030357
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Tao, Wei-Kuo
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Shi, Jainn J.
(Science Applications International Corp. Beltsville, MD, United States)
Jou, Ben Jong-Dao
(National Taiwan Univ. Taipei, Taiwan, Province of China)
Lee, Wen-Chau
(National Center for Atmospheric Research Boulder, CO, United States)
Lin, Pay-Liam
(National Central Univ. Chung-Li, Taiwan, Province of China)
Chang, Mei-Yu
(Central Weather Bureau Taiwan, Province of China)
Date Acquired
August 24, 2013
Publication Date
November 6, 2007
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: Conference on Mesoscale meteorology and Typhoon
Location: Taipei,
Country: Taiwan, Province of China
Start Date: November 6, 2007
End Date: November 8, 2007
Distribution Limits
Public
Copyright
Other

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