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Characterization of the life cycle of convection from initiation to decay on the basis of case study from July, 15th 2007

Schmidt, Kersten and Hagen, Martin and Höller, Hartmut (2009) Characterization of the life cycle of convection from initiation to decay on the basis of case study from July, 15th 2007. 8th COPS Workshop and CSIP Meeting, 26.-28. Oct 2009, Madingley Hall, Cambridge, UK. (Unpublished)

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Abstract

The life cycle of convection from its initiation to the decay is described in detail for a case study on July, 15th 2007 during the COPS (Convective and Orographically-induced Precipitation Study) campaign. The convective initiation on July, 15th is identified for the time step 14:30 – 14:40 UTC. In this time interval the brightness temperature of the MSG rapid scan data at 10.8 µm changed significantly (<-4 K/min) while radar reflectivity reaches values over 35 dBZ and lightning activity starts (first event at 14:34 UTC). To assess the dynamic evolution during the mature state of the cell wind field was estimated by using dual doppler method. Therefore the radar data from the DLR POLDIRAD and the Feldberg radar were combined. To investigate microphysical processes different types of hydrometeors were classified by 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 were reconstructed. The decay process appears slower and less pronounced than the initiation process. Last lightning event was observed at 14:45 UTC while radar reflectivity decreases to values below 35 dBZ until 15:40 UTC and the brightness temperature remains below 250 K until 16:30 UTC.

Document Type:Conference or Workshop Item (Speech)
Title:Characterization of the life cycle of convection from initiation to decay on the basis of case study from July, 15th 2007
Authors:
AuthorsInstitution or Email of Authors
Schmidt, Kerstenkersten.schmidt@dlr.de
Hagen, MartinIPA, DLR
Höller, HartmutIPA, DLR
Date:October 2009
Status:Unpublished
Keywords:deep convection, life cycle, radar data, dual Doppler
Event Title:8th COPS Workshop and CSIP Meeting
Event Location:Madingley Hall, Cambridge, UK
Event Type:Workshop
Event Dates:26.-28. Oct 2009
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Air Traffic and Weather (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology
Deposited By: Kersten Schmidt
Deposited On:13 Dec 2010 13:04
Last Modified:12 Dec 2013 21:09

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