elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Characterization of convection dynamics during COPS: A detailed case study and typical cloud structures as seen by satellites

Volkert, Hans and Schimdt, Kersten (2010) Characterization of convection dynamics during COPS: A detailed case study and typical cloud structures as seen by satellites. 14th Mountain Meteorology Conference, 30. Aug. - 3. Sep. 2010, Squaw Creek, California, USA.

[img] PDF - Registered users only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
5MB

Official URL: http://ams.confex.com/ams/14MountMet/techprogram/paper_173855.htm

Abstract

The life cycle of isolated deep convection is investigated with emphasis on their dynamical evolution. The data used in this study are from the COPS campaign (Convective and Orographically-induced Precipitation Study) that took place in south-western Germany and eastern France in the summer 2007. On the basis of case study from 15 July the convection is described from convective initiation at 14:30 UTC to the decay around 16:30 UTC. The convective initiation is identified by significantly changing of brightness temperature of the MSG (Meteosat Second Generation satellite) rapid scan data at visible channel (10.8µm). The dynamic evolution during the life cycle can be described by the horizontal wind field in different altitude stages. Therefore radar data of four different sites were used, namely the operational radars of the German weather service (DWD) at Feldberg and Tuerkheim, C-band radar at Karlsruhe provided by the Institute for Meteorology and Climate Research (IMK), and the polarimetric radar POLDIRAD of DLR-IPA, which was situated at Waltenheim sur Zorn (France) during the COPS campaign. As radar scan time was not fully synchronized ten minute time interval were selected before gridding all data to a common volume and processing them by a multiple Doppler method. The estimated wind fields are compared with surface wind from VERA (Vienna Enhanced Resolution Analysis) of the University of Vienna and calculations from the French Meso-NH model. To investigate microphysical processes different types of hydrometeors were classified using polarimetric information of the DLR radar POLDIRAD. In combination with 3D-lightning data, provided by the European lightning network LINET, the electrical activity of the cells are reconstructed. The type and mass density of hydrometeors are also compared with the output from model calculation by using Meso-NH model. In the final part of the presentation images from polar orbiting as well as geostationary satellites are used to characterize the larger variety of convective events sampled during COPS in relation to the isolated event of 15 July.

Document Type:Conference or Workshop Item (Speech)
Title:Characterization of convection dynamics during COPS: A detailed case study and typical cloud structures as seen by satellites
Authors:
AuthorsInstitution or Email of Authors
Volkert, HansDLR, IPA
Schimdt, KerstenDLR, IPA
Date:2 September 2010
Refereed publication:No
In ISI Web of Science:No
Status:Published
Keywords:Fernerkundung Radarmeteorologie Gewitter
Event Title:14th Mountain Meteorology Conference
Event Location:Squaw Creek, California, USA
Event Type:international Conference
Event Dates:30. Aug. - 3. Sep. 2010
Organizer:American Meteorological Society
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology
Deposited By: Dr.rer.nat. Hans Volkert
Deposited On:13 Feb 2012 13:44
Last Modified:13 Jan 2014 08:42

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.