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- W2042992782 abstract "Abstract The dual-polarization (dual pol) Doppler radar can transmit/receive both horizontally and vertically polarized power returns. The dual-pol radar measurements have been shown to provide a more accurate precipitation estimate compared to traditional radars. In this study, the horizontal reflectivity Z H , differential reflectivity Z DR , specific differential phase K DP , and radial velocity VR collected by the C-band Advanced Radar for Meteorological and Operational Research (ARMOR) are assimilated for two convective storms. A warm-rain scheme is constructed to assimilate Z H , Z DR , and K DP data using the three-dimensional variational data assimilation (3DVAR) system with the Advanced Research Weather Research and Forecasting Model (ARW-WRF). The main goals of this study are first to demonstrate and compare the impact of various dual-pol variables in initialization of real case convective storms and second to test how the dual-pol fields may be better used with a 3DVAR system. The results show that the Z H , Z DR , K DP , and VR data substantially improve the initial condition for two mesoscale convective storms. Significant positive impacts on short-term forecast are obtained for both storms. Additionally, K DP and Z DR data assimilation is shown to be superior to Z H and Z DR and Z H -only data assimilation when the warm-rain microphysics is adopted. With the ongoing upgrade of the current Weather Surveillance Radar-1988 Doppler (WSR-88D) network to include dual-pol capabilities (started in early 2011), the findings from this study can be a helpful reference for utilizing the dual-pol radar data in numerical simulations of severe weather and related quantitative precipitation forecasts." @default.
- W2042992782 created "2016-06-24" @default.
- W2042992782 creator A5058096624 @default.
- W2042992782 creator A5086066025 @default.
- W2042992782 date "2012-07-01" @default.
- W2042992782 modified "2023-09-29" @default.
- W2042992782 title "Impact of the Dual-Polarization Doppler Radar Data on Two Convective Storms with a Warm-Rain Radar Forward Operator" @default.
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- W2042992782 doi "https://doi.org/10.1175/mwr-d-11-00090.1" @default.
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