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Cloud Electrification Model in COSMO Numerical Weather Prediction model
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SYSNO ASEP 0508140 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Cloud Electrification Model in COSMO Numerical Weather Prediction model Author(s) Minářová, Jana (UFA-U) RID, ORCID
Sokol, Zbyněk (UFA-U) RID, ORCIDNumber of authors 2 Article number 8815980 Source Title 2019 11th Asia-Pacific International Conference on Lightning (APL). - Piscataway : IEEE, 2019 - ISBN 978-1-7281-1694-5 Pages s. 1-5 Number of pages 5 s. Publication form Online - E Action Asia-Pacific International Conference on Lightning (APL2019) /11./ Event date 12.06.2019 - 14.06.2019 VEvent location Hong Kong Country CN - China Event type WRD Language eng - English Country US - United States Keywords cloud electrification ; NWP model ; COSMO ; charge structure ; thundercloud Subject RIV DG - Athmosphere Sciences, Meteorology OECD category Meteorology and atmospheric sciences Institutional support UFA-U - RVO:68378289 EID SCOPUS 85072332324 DOI 10.1109/APL.2019.8815980 Annotation We developed a Cloud Electrification Model (CEM) and implemented it in the microphysical scheme of the COSMO non-hydrostatic and convection-permitting 2-moment numerical weather prediction model. CEM explicitly describes the electrification of a thundercloud,, it explicitly treats the ion motion including the interaction of ions with six kinds of hydrometeors (cloud water, ice, graupel, rain, snow, and hail). Charge concentration within the hydrometeors as well as the change of the concentration are both computed by CEM within the cloud microphysical scheme of COSMO. The charging mechanism in CEM is primarily due to the non-inductive mechanism, which leads to the charge separation and transfer, although we consider the inductive charging mechanism in CEM as well. Based on simulations of an artificially induced thundercloud, i.e. warm air bubble, CEM shows rather complicated electric charge structure in the thundercloud. The concentration of the negative charges is mostly connected to high concentrations of graupel, ice, and snow that frequently collide to transfer their charges. Workplace Institute of Atmospheric Physics Contact Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Year of Publishing 2020 Electronic address https://ieeexplore.ieee.org/document/8815980/references#references
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