Convective Storms & NWP Seminar Series presents...
The Sensitivity of Precipitation in the WRF to Nearly Random Perturbations
Melissa Bukovsky
The University of Oklahoma School of Meteorology
30 January 2009, 2:00 PM
National Weather Center, Room 5600
120 David L. Boren Blvd.
University of Oklahoma
Norman, OK
Directions to the NWC (.pdf, 60 kb)
As part of the process of setting up the Weather Research and Forecasting model (WRF) for use as a nested regional climate model that gave reasonable results in a feasible amount of computational time, a number of quirks and other interesting issues have been found, some of which would not be apparent while using the WRF in a more traditional manner for short-term cases or forecasting purposes. Physics, dynamics, domain, boundary, nesting, and other options have been explored along the way, and a switch from version 2.2 to version 3.0.1 was made.
This is an encore presentation of a seminar I gave in early December in the Climate Seminar Series. I will present the impact changing WRF parameterizations, nest feedbacks, sea-surface temperature updates, version number, and a few other setup options had on warm-season precipitation in a number of 4-month long simulations. Plenty of time for discussion will be included. If time permits, and the audience is interested, I will show some very preliminary results from the WRF as used to simulate the impact of climate change on precipitation.