Terry Schuur

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The kinematic, microphysical, and electrical structures of two mesoscale convective systems (MCSs) observed during the 1991 Cooperative Oklahoma Profiler Studies (COPS91) experiment are analyzed. Profiles of the vertical electric field structure and charge density were obtained from a series of balloon-borne electric field meter (EFM) flights into each MCS.(More)
To test the utility and added value of polarimetric radar products in an operational environment, data from the KOUN polarimetric WSR-88D radar were delivered to the Norman, Oklahoma National Weather Service Weather Forecast Office (WFO) as part of the Joint POLarization Experiment (JPOLE). KOUN polarimetric base data and algorithms were used at the WFO(More)
The paper presents an analysis of the performance of different radar algorithms for rainfall estimation. These are the conventional one based on radar reflectivity factor Z and three polarimetric estimators utilizing different combinations of Z, specific differential phase KDP, and differential reflectivity ZDR. A dense micronetwork of 42 gauges in central(More)
A method is presented by which combined S-band polarimetric weather radar and UHF wind profiler observations of precipitation can be used to extract the properties of liquid phase hydrometeors and the vertical velocity of the air through which they are falling. Doppler spectra, which contain the air motion and/or fall speed of hydrometeors, are estimated(More)
This study proposes a Bayesian approach to retrieve raindrop size distributions (DSDs) and to estimate rainfall rates from radar reflectivity in horizontal polarization ZH and differential reflectivity ZDR. With this approach, the authors apply a constrained-gamma model with an updated constraining relation to retrieve DSD parameters. Long-term DSD(More)
Ground-based polarimetric weather radar is arguably the most powerful validation tool that provides physical insight into the development and interpretation of spaceborne weather radar algorithms and observations. This study aims to compare and resolve discrepancies in hydrometeor retrievals and reflectivity observations between the NOAA/National Severe(More)
One of the important advantages of polarimetric weather radars is their ability to discriminate between different types of hydrometeor and non-hydrometeor radar scatterers. Using a fuzzy logic classification algorithm, polarimetric measurands are combined to provide an identification of various hydrometeor types, such as rain, hail, graupel, wet snow, dry(More)
In the Spring of 2002, several years of effort on the NOAA research WSR-88D radar culminated in the generation and display of dual polarization radar data and products. As part of the Joint Polarization Experiment (JPOLE) operational demonstration, these data and products were delivered in real-time to operational forecasters at the Norman, OK National(More)