Details:

Journal Title:
Journal of Atmospheric and Oceanic Technology
Personal Author:
Schvartzman, David ; Torres, Sebastián M. ; Warde, David
Schvartzman, David ; Torres, Sebastián M. ; Warde, David Less -
NOAA Program & Office:
CIMMS (Cooperative Institute for Mesoscale Meteorological Studies) ; OAR (Oceanic and Atmospheric Research) ; NSSL (National Severe Storms Laboratory)
CIMMS (Cooperative Institute for Mesoscale Meteorological Studies) ; OAR (Oceanic and Atmospheric Research) ; NSSL (National Severe Storms Laboratory) Less -
Description:
Since the dual-polarization upgrade of the Weather Surveillance Radar-1988 Doppler (WSR-88D), the polarimetric variables have become a fundamental tool for better interpretation and forecasting of hazardous weather events. Thus, improving their quality has been an important long-standing effort. In this paper, we introduce the hybrid-scan estimators (HSE), which use the available data in split cuts of operational volume coverage patterns (VCP) to provide better estimates of differential reflectivity, differential phase, and correlation coefficient. The HSE are designed to choose between the data provided by either one of the two scans in split cuts based on their expected statistical performance, resulting in the same or better data quality compared to the conventional estimators. The performance improvement realized with the HSE is characterized with simulations and illustrated with data from WSR-88D. While relatively simple, an operational implementation of the HSE could bring improvements to forecasters’ data interpretation and algorithm performance, both of which rely on dual-polarization radar data.
Keywords:
[+]
Numerical Weather Forecasting
Remote Sensing

Source:
J. Atmos. Oceanic Technol. (2020) 37 (2): 299–315.
DOI:
https://doi.org/10.1175/JTECH-D-19-0071.1
Document Type:
Journal Article
Rights Information:
Other
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:15a462951c1815b25c4c905aee3cbfafc66540161c46b1ef0d9b2e801c8c43f0
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