The Hurricane Weather Research & Forecasting (HWRF) Prediction System. Next generation non-hydrostatic weather research and hurricane prediction system Movable, 2- way nested grid (9km; 27km/42L; ~68X68) Coupled with Princeton Ocean Model
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Fixing known bugs in HWRF model (mostly related to radiation)
Led to definition of new baseline configuration for HWRF
Improved initialization (Additional data in GSI near the storm environment)
Surface Physics Changes (Cd/Ch coefficients calculated based on observations)
Gravity Wave Drag Parameterization
*Configurations for 2010 season
Advanced initialization for hurricane core – assimilate airborne Doppler radar observations to define storm strength and storm structure
Continuous upgrades to HWRF hurricane core initialization through advanced 4-D data assimilation for winds and reflectivity
Model resolution upgrades:
Increase resolution: Horizontal resolution 1-6km, Vertical resolution ~100 levels (dependent on results of current studies).
Hurricane ensembles: High-resolution hurricane model ensembles.
Development of HWRF ensembles in progress
Continuous upgrades to gravity wave drag parameterizations, sea spray parameterization, atmospheric/ocean boundary layer (fluxes), microphysics, deep convection (cloud-resolving scales), radiation
Replacement of POM with the HYCOM ocean model for 2011
Coupling to land surface model with advanced surface physics for improved rainfall forecasts at landfall. Important input to hydrology and stream flow models which will address inland flooding.
Advanced Wave Model (WAVEWATCH III) to forecast waves up to the beach, i.e. improve non-linear interactions, surf-zone shallow water physics, wave interactions with currents.