An approach to the assimilation of Doppler radar radial winds into a high resolution Numerical Weather Prediction (NWP) model is described. In this paper, we discuss the types of errors which might occur in radar radial winds. A new approach to specifying the radial velocity observation error is proposed based upon the radial gradient of the velocity across the pulse volume. The variation of this error with range is derived for a specific case. The production of "super-observations" for the input to a 3D-Var assimilation system is discussed. Impact of the assimilation of Doppler velocities on the 3D-Var analysis and on the model forecasts, for a case study, is investigated.
|Number of pages||13|
|Publication status||Published - 2005|
|Event||11th Conference on Mesoscale Processes and the 32nd Conference on Radar Meteorology - Albuquerque, NM, United States|
Duration: Oct 24 2005 → Oct 29 2005
|Other||11th Conference on Mesoscale Processes and the 32nd Conference on Radar Meteorology|
|Period||10/24/05 → 10/29/05|
ASJC Scopus subject areas