The chief benefits of the higher resolution RUC13 will be in better forecasts of terrain-induced flows and near coastlines, resolved clouds, and convective and resolved-scale precipitation. Improvements evident in cloud and precipitation forecasts during initial testing result from both revised microphysics and convection parameterizations as well as higher spatial resolution. These changes in the RUC13 are considered to be quite significant for aviation and severe weather forecast users.
At the conference we will compare FSL's RUC13 performance to that of a RUC20 cycle using the same observational input. In addition, we will discuss the proposed roadmap to the next operational version of the Rapid Update Cycle, called Rapid Refresh, which will run in the WRF framework at a horizontal resolution of about 10 km, likely using one of the two non-hydrostatic WRF dynamical cores, and incorporating the Gridded Statistical Interpolation 3DVAR analysis under development at NCEP. Operational implementation of this version is planned for 2007.
Supplementary URL: http://ruc.fsl.noaa.gov