Y
Youngsun Jung
Researcher at University of Oklahoma
Publications - 48
Citations - 1805
Youngsun Jung is an academic researcher from University of Oklahoma. The author has contributed to research in topics: Radar & Ensemble Kalman filter. The author has an hindex of 20, co-authored 48 publications receiving 1440 citations. Previous affiliations of Youngsun Jung include United States Department of Energy Office of Science.
Papers
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Journal ArticleDOI
Assimilation of Simulated Polarimetric Radar Data for a Convective Storm Using the Ensemble Kalman Filter. Part I: Observation Operators for Reflectivity and Polarimetric Variables
TL;DR: In this article, a radar simulator for polarimetric radar variables, including reflectivities at horizontal and vertical polarizations, the differential reflectivity, and the specific differential phase, has been developed.
Journal ArticleDOI
Progress and challenges with Warn-on-Forecast
David J. Stensrud,Louis J. Wicker,Ming Xue,Daniel T. Dawson,Daniel T. Dawson,Nusrat Yussouf,Nusrat Yussouf,Dustan M. Wheatley,Dustan M. Wheatley,Therese E. Thompson,Therese E. Thompson,Nathan Snook,Travis M. Smith,Travis M. Smith,Alexander D. Schenkman,Corey K. Potvin,Edward R. Mansell,Ting Lei,Kristin M. Kuhlman,Kristin M. Kuhlman,Youngsun Jung,Thomas A. Jones,Thomas A. Jones,Jidong Gao,Michael C. Coniglio,Harold E. Brooks,Keith Brewster +26 more
TL;DR: In this paper, the authors explored the ability of short-range convective-scale ensemble forecasts to provide guidance that could be used in warning operations for five events: two tornadic supercell thunderstorms, a macroburst, a damaging windstorm and a flash flood.
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Simulations of Polarimetric Radar Signatures of a Supercell Storm Using a Two-Moment Bulk Microphysics Scheme
TL;DR: In this article, a general polarimetric radar simulator for non-hydrostatic numerical weather prediction (NWP) models has been developed based on rigorous scattering calculations using the T-matrix method for reflectivity, differential reflectivities, specific differential phase, and copolar cross-correlation coefficient.
Journal ArticleDOI
Low-Level ZDR Signatures in Supercell Forward Flanks: The Role of Size Sorting and Melting of Hail
Daniel T. Dawson,Edward R. Mansell,Youngsun Jung,Louis J. Wicker,Matthew R. Kumjian,Ming Xue +5 more
TL;DR: In this article, the authors used a multimoment bulk micro-physics scheme, in which size sorting is allowed or disallowed for hydrometeor species, in the presence of vertical wind shear.
Journal ArticleDOI
Assimilation of Simulated Polarimetric Radar Data for a Convective Storm Using the Ensemble Kalman Filter. Part II: Impact of Polarimetric Data on Storm Analysis
TL;DR: In this paper, a data assimilation system based on the ensemble square-root Kalman filter (EnSRF) is extended to include the additional capability of assimilating polarimetric radar variables.