International Scholarly Research Notices

Research Article

A Comparative Study on Performance of Analysis Nudging and 3DVAR in Simulation of a Heavy Rainfall Event Using WRF Modeling System

Table 2

WRF Model configuration used in the present study.
DynamicsNonhydrostatic
Main prognostic variablesu, v, w, p ′, θ ′, Φ′
Number of domainSingle domain
Central point of the domainCentral Lat/Lon.: 17.0°N/78.0°E
Horizontal grid distance30 km
Integration time step90 second
Number of grid pointsX- and Y-direction 151 × 151 points
Map projectionMercator
Horizontal grid distributionArakawa C-grid
Vertical coordinateTerrain-following hydrostatic-pressure coordinate
Time integration3rd-order Runge-Kutta
Spatial differencing scheme6th-order centered differencing
Initial conditions3-dimensional real-data (FNL: 1° × 1°)
Lateral boundary conditionSpecified options for real-data
MicrophysicsLin
Radiation schemeDudhia’s short wave radiation/RRTM long wave
Surface layer parameterizationThermal diffusion scheme
Cumulus parameterization schemesBetts-Miller-Janjic
PBL parameterizationYSU scheme