Convective Meteorology (Mesoscale Dynamics)
The dependence of QPF on the choice of microphysical parameterization for lake-effect snowstorms and other winter weather topics at NSSL
15 February 2013, 2:00 PM
National Weather Center, Room 5600
120 David L. Boren Blvd.
University of Oklahoma
The primary focus of this talk will be on a series of numerical model forecasts made of a lake-effect snow event. These forecasts examine how dependent QPF is on the choice of microphysical parameterization. Notable differences are observed in the amount and distribution of precipitation with some schemes having very narrow and heavy precipitation shields and others having a more diffuse pattern. Causes for these different patterns will be discussed as well as some limitations to validating QPF in the lake-effect snow environment. The talk will then segue into other winter weather topics the author is involved with at NSSL. These include the development of a new winter surface hydrometeor classification algorithm, some forays into blizzard potential forecasting, and theoretical aspects of orographic precipitation.
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