Effects of WRF parameterization on meteorological predictions in the mid-latitude region - planetary boundary layer scheme and cloud microphysics -

Abstract

This paper describes the performance of the weather research and forecasting (WRF) model applied for Typhoon Maemi in 2003 in the mid-latitude (N35°-55°) using grid point value (GPV) data of NCEP FNL (ds083.2) and NCEP/NCAR Reanalysis (ds090.0), by changing planetary boundary layer scheme and cloud microphysics. It was found that typhoon tracks are closer to the best track when using ds090.0 data, while intensity is well simulated by using ds083.2 in the range of over N30°. In addition, wind is more sensitive to the planetary boundary layer scheme than the cloud microphysics. Sea level pressure is similarly sensitive to both schemes of the planetary boundary layer scheme and the cloud microphysics.