Improving RAMS and WRF mesoscale forecasts over two distinct vegetation covers using an appropriate thermal roughness length parameterization

1 the Rams Cloud Microphysics Parameterization in Wrf : Current Status

short range precipitation forecasts evaluation of wrf model over iran

iran has a complex topography and it consists of rugged, mountainous rims surrounding high interior basins. because of this condition, in some cases the nwp output has a significant error from mesoscale variations induced by the diverse topography.  iran, covering an area of about 1,648,000 km2, is located in the southwest of asia approximately between 25° and 40° n and 44° and 64° e. this is p...

Analysis of updraft velocity in mesoscale convective systems using satellite and WRF model simulations

Updraft vertical velocity is an important dynamical quantity which is strongly related to storm intensity and heavy precipitation. It can be calculated by direct observations, NWP model, and geostationary satellites which can provide the possibility of measuring this quantity with high temporal resolution. This research analyzed updraft velocity based on six derived parameters from INSAT3-D and...

Testing the hypothesis on the relationship between aerodynamic roughness length and albedo using vegetation structure parameters.

Surface albedo (α) and aerodynamic roughness length (z(0)), which partition surface net radiation into energy fluxes, are critical land surface properties for biosphere-atmosphere interactions and climate variability. Previous studies suggested that canopy structure parameters influence both α and z(0); however, no field data have been reported to quantify their relationships. Here, we hypothes...

Incorporating An Advanced Aerosol Activation Parameterization into WRF-CAM5: Model

Yang Zhang, Xin Zhang, Kai Wang, Jian He, L. Ruby Leung, Jiwen Fan, and Athanasios 3 Nenes 5 4 5 Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, North Carolina, 6 USA. 7 Collaborative Innovation Center for Regional Environmental Quality, Beijing 100084, China} 8 Pacific Northwest National Laboratory, Richland, Washington, USA. 9 School of Earth a...