Simulations of Cloud Electrification and Lightning Model implemented in COSMO

0505555 - ÚFA 2020 DE eng A - Abstrakt
Sokol, Zbyněk - Minářová, Jana
Simulations of Cloud Electrification and Lightning Model implemented in COSMO.
ICCARUS Seminar 2019 book of abstracts. Offenbach: Deustcher Wetterdienst, 2019. s. 16.
[ICCARUS 2019. 07.03.2019-07.03.2019, Offenbach]
Institucionální podpora: RVO:68378289
Klíčová slova: cloud electrification * lightning * numerical weather prediction * cloud microphysics * thunderstorm * COSMO model
Obor OECD: Meteorology and atmospheric sciences

Cloud Electrification and Lightning Model (CELM) has been developed to explicitly model the electrification and lightning in thunderclouds. It is a model that is implemented in the 2- moment cloud microphysics of COSMO. CELM accounts for both the inductive and mainly the non-inductive charging mechanism. It explicitly models advection of charges bounded to six kinds of hydrometeors, changes in charge concentration caused by physical processes within cloud microphysics, ion concentration, and charge separation and transfer caused by collisions of hydrometeors. Since previous simulations of CELM using an idealized thundercloud showed a plausible charge structure in the cloud, we tested the model using real data. Specifically, we simulated three thunderstorm events of 2016 that were related to heavy precipitation and/or hail, and intense lightning activity. We also computed the Lightning Potential Index that has been developped for COSMO by the COSMO community.
Trvalý link: http://hdl.handle.net/11104/0297034