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A Basis for Improving Numerical Forecasting in the Gulf Area by Assimilating Doppler Radar Radial Winds
3D-Var Data Assimilation Doppler Winds Errors NWP
2013/3/6
An approach to assimilate Doppler radar radial winds into a high resolution Numerical Weather Prediction (NWP) model using 3D-Var system is described. We discuss the types of errors that occur in rada...
EnKF assimilation of simulated spaceborne Doppler observations of vertical velocity: impact on the simulation of a supercell thunderstorm and implications for model-based retrievals
EnKF velocity
2010/1/27
Recently, a number of investigations have been made that point to the robust effectiveness of the Ensemble Kalman Filter (EnKF) in convective-scale data assimilation. These studies have focused on the...
Characterization of the precipitation in southwestern part of Greece with X-band Doppler radar, 2-D video disdrometer and rain gauges
precipitation X-band Doppler radar
2010/1/27
We document precipitation in the southwestern part of Greece with the National Observatory of Athens (NOA) X-band radar, NOA 2D video disdrometer and a network of rain gauges. The observations were co...
Recalculation of an artificially released avalanche with SAMOS and validation with measurements from a pulsed Doppler radar
an artificially released avalanche SAMOS a pulsed Doppler radar
2009/12/9
A joint experiment was carried out on 10 February 1999 by the Swiss Federal Institute for Snow and Avalanche Research (SFISAR) and the Austrian Institute for Avalanche and Torrent Research (AIATR, of ...
Analysis of severe convective events from two operational dual polarisation doppler radars
severe convective events operational dual polarisation doppler radars
2009/12/29
The recent gradual increase in the use of polarimetric radars prompts for possible improvements in the estimation of precipitation and the identification of the prevailing hydrometeor type. An analysi...
Although methods of using multiple Doppler radars to study wind fields have long been proposed, and many research studies have been made, very few operational radar operators adopt methods which requi...
Clutter and rainfall discrimination by means of doppler-polarimetric measurements and vertical reflectivity profile analysis
Clutter and rainfall discrimination doppler-polarimetric measurements vertical reflectivity profile analysis
2010/1/22
The estimation of rainfall rate and other parameters from radar scattering volume is heavily affected by the presence of intense sea and ground clutter and echoes which appears in anomalous propagatio...