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Regional-Scale Modeling at NASA Goddard Space Flight CenterOver the past decade, the Goddard Mesoscale Modeling and Dynamics Group has used a popular regional scale model, MM5, to study precipitation processes. Our group is making contributions to the MM5 by incorporating the following physical and numerical packages: improved Goddard cloud processes, a land processes model (Parameterization for Land-Atmosphere-Cloud Exchange - PLACE), efficient but sophisticated radiative processes, conservation of hydrometeor mass (water budget), four-dimensional data assimilation for rainfall, and better computational methods for trace gas transport. At NASA Goddard, the MM5 has been used to study: (1) the impact of initial conditions, assimilation of satellite-derived rainfall, and cumulus parameterizations on rapidly intensifying oceanic cyclones, hurricanes and typhoons, (2) the dynamic and thermodynamic processes associated with the development of narrow cold frontal rainbands, (3) regional climate and water cycles, (4) the impact of vertical transport by clouds and lightning on trace gas distributiodproduction associated with South and North American mesoscale convective systems, (5) the development of a westerly wind burst (WWB) that occurred during the TOGA COARE and the diurnal variation of precipitation in the tropics, (6) a Florida sea breeze convective event and a Mid-US flood event using a sophisticated land surface model, (7) the influence of soil heterogeneity on land surface energy balance in the southwest GCIP region, (8) explicit simulations (with 1.33 to 4 km horizontal resolution) of hurricanes Bob (1991) and Bonnie (1998), (9) a heavy precipitation event over Taiwan, and (10) to make real time forecasts for a major NASA field program. In this paper, the modifications and simulated cases will be described and discussed.
Document ID
20030102265
Document Type
Preprint (Draft being sent to journal)
Authors
Tao, W.-K. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Adler, R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Baker, D. (Austin Coll. Sherman, TX, United States)
Braun, S. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chou, M.-D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Jasinski, M. F. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Jia, Y. (Science Systems and Applications, Inc. Greenbelt, MD, United States)
Kakar, R. (NASA Headquarters Washington, DC United States)
Karyampudi, M. (National Centers for Environmental Prediction Washington, DC, United States)
Lang, S. (Science Systems and Applications, Inc. Greenbelt, MD, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2003
Subject Category
Meteorology and Climatology
Distribution Limits
Public
Copyright
Public Use Permitted.

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