Application of multigrid NLS-4DVar in radar radial velocity data assimilation with WRF-ARW

Assimilation of Radar Radial Velocity Data with the WRF Ensemble- 3DVAR Hybrid System for the Prediction of Hurricane Ike (2008)

An enhanced version of the hybrid ensemble-3DVAR data assimilation system for the WRF model is applied to the assimilation of radial velocity (Vr) data from two coastal WSR-88D radars for the prediction of Hurricane Ike (2008) before and during its landfall. In this hybrid system, flow-dependent ensemble covariance is incorporated into the varitional cost function using the extended control var...

Assimilation of Radar Radial Velocity Data with the WRF Hybrid Ensemble–3DVAR System for the Prediction of Hurricane Ike (2008)

An enhanced version of the hybrid ensemble–three-dimensional variational data assimilation (3DVAR) system for the Weather Research and Forecasting Model (WRF) is applied to the assimilation of radial velocity (Vr) data from two coastal Weather Surveillance Radar-1988 Doppler (WSR-88D) radars for the prediction of Hurricane Ike (2008) before and during its landfall. In this hybrid system, flow-d...

Assimilation of Radar Radial Velocity Data with the WRF Hybrid 6 Ensemble - 3 DVAR System for the Prediction of Hurricane Ike ( 2008 )

Processing of Doppler radar radial winds for data assimilation

Atmospheric wind field is 3-dimensional and variable over time and space. Doppler radar measures one component of the wind vector, ie. the radar radial component. For complete description of the wind field simultaneous measurements should be made with three Doppler radars. Usually only one radar is available and the availability of the other two radars is compencated by simplifying assumptions ...

Assimilation of Multiple-doppler Radar Data with the Wrf 3-d Var and a Cloud Analysis

A reliable application of a numerical weather prediction to short-range quantitative precipitation forecasting (QPF) is needed to forecast disastrous severe storms. The success of the dynamic, thermodynamic, and microphysical retrievals at the convective scale using Doppler radar observations are important but still great challenges. The use of three-dimensional variational data assimilation (3...