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.
| Dynamics | Nonhydrostatic | Main prognostic variables | u, v, w, p ′, θ ′, Φ′ | Number of domain | Single domain | Central point of the domain | Central Lat/Lon.: 17.0°N/78.0°E | Horizontal grid distance | 30 km | Integration time step | 90 second | Number of grid points | X- and Y-direction 151 × 151 points | Map projection | Mercator | Horizontal grid distribution | Arakawa C-grid | Vertical coordinate | Terrain-following hydrostatic-pressure coordinate | Time integration | 3rd-order Runge-Kutta | Spatial differencing scheme | 6th-order centered differencing | Initial conditions | 3-dimensional real-data (FNL: 1° × 1°) | Lateral boundary condition | Specified options for real-data | Microphysics | Lin | Radiation scheme | Dudhia’s short wave radiation/RRTM long wave | Surface layer parameterization | Thermal diffusion scheme | Cumulus parameterization schemes | Betts-Miller-Janjic | PBL parameterization | YSU scheme |
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