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Detailed flow, hydrometeor and lightning characteristics of an isolated thunderstorm during COPS

Schmidt, Kersten and Hagen, Martin and Höller, Hartmut and Richard, Evelyne and Volkert, Hans (2012) Detailed flow, hydrometeor and lightning characteristics of an isolated thunderstorm during COPS. Atmospheric Chemistry and Physics, 12, pp. 6679-6698. Copernicus Publications. DOI: 10.5194/acp-12-6679-2012 ISSN 1680-7316


Official URL: http://www.atmos-chem-phys.net/12/6679/2012/


The three-hour life-cycle of the isolated thunderstorm on 15 July 2007 during the Convective and Orographically-induced Precipitation Study (COPS) is documented in detail, with a special emphasis on the rapid development and mature phases. Remote sensing techniques as 5- min rapid scans from geostationary satellites, combined velocity retrievals from up to four Doppler-radars, the polarimetric determination of hydrometeors and spatio-temporal occurrences of lightning strokes are employed to arrive at a quantification of the physical parameters of this, during the COPS period, singular event. Inner cloud flow fields are available from radar multiple Doppler analyses at four consecutive times separated by 15 min-intervals. They contain horizontal winds of around 15ms�1 and updrafts exceeding 5ms�1, the latter collocated with lightning strokes. Reflectivity and polarimetric data indicate the existence of hail at the 2 km level around 14:40. Furthermore, polarimetric and Doppler radar variables indicate intense hydrometeor variability and turbulence corresponding to an enhanced variance of the retrieved 3-D wind fields. Profiles of flow and hydrometeor statistics over the entire cloud volume provide reference data for high-resolution numerical weather prediction runs in research mode. The study embarks from two movie-loops of geostationary satellite imagery (as Supplement), which provide an intuitive distinction of six phases making up the entire life-cycle of the thunderstorm. It concludes with a triple-image loop, juxtaposing a close-up of the cloud motion as seen by Meteosat, simulated brightness temperature (as a proxy for clouds seen by the infrared satellite channel), and a perspective view on the model generated system of cloud cells. The simulation suggests that several updrafts fed from a low level convergence line eventually removed the convective inhibition and set deep convection in motion. A shear line in the radial velocity relative to the Feldberg radar site shows good agreement beween observation and simulation, whereas the onset location of deep convection exhibits a horizontal discrepancy of 15 km. A quantitative schematic of the isolated thunderstorm synthesizes all retrieved characteristics.

Item URL in elib:https://elib.dlr.de/75665/
Document Type:Article
Title:Detailed flow, hydrometeor and lightning characteristics of an isolated thunderstorm during COPS
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Richard, EvelyneUniv. de Toulouse III, Toulouse, FUNSPECIFIED
Volkert, HansDLR, IPAhttps://orcid.org/0000-0003-1688-208X
Journal or Publication Title:Atmospheric Chemistry and Physics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.5194/acp-12-6679-2012
Page Range:pp. 6679-6698
Publisher:Copernicus Publications
Keywords:thunderstorm life cycle, radar multiple-Doppler analysis, MSG brightness temperature, lightning, COPS, Meso-NH model
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:ATM and Operation (old)
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology
Deposited By: Schmidt, Dr. Kersten
Deposited On:06 Jun 2012 11:59
Last Modified:02 May 2019 14:04

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