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Initiation of deep convection at marginal instability in an ensemble of mesoscalemodels: a case-study from COPS

Barthlott, Christian and Burton, Ralph and Kirshbaum, Daniel J. and Hanley, Kirsty and Richard, Evelyne and Chaboureau, Jean-Pierre and Trentmann, Jörg and Kern, Bastian and Bauer, Hans-Stefan and Schwitalla, Thomas and Keil, Christian and Seity, Yann and Gadian, Alan and Blyth, Alan and Mobbs, Stephen and Flamant, Cyrille and Handwerker, Jan (2011) Initiation of deep convection at marginal instability in an ensemble of mesoscalemodels: a case-study from COPS. Quarterly Journal of the Royal Meteorological Society, 137, pp. 118-136. Wiley. DOI: 10.1002/qj.707 ISSN 0035-9009

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/qj.707/pdf

Abstract

The present study investigates the initiation of precipitating deep convection in an ensemble of convection-resolving mesoscalemodels. Results of eight differentmodel runs from five non-hydrostatic models are compared for a case of the Convective andOrographically-induced Precipitation Study (COPS).An isolated convective cell initiated east of the Black Forest crest in southwest Germany, although convective available potential energy was only moderate and convective inhibition was high. Measurements revealed that, due to the absence of synoptic forcing, convection was initiated by local processes related to the orography. In particular, the lifting by low-level convergence in the planetary boundary layer is assumed to be the dominant process on that day. The models used different configurations as well as different initial and boundary conditions.By comparing the different model performance with each other and with measurements, the processes which need to be well represented to initiate convection at the right place and time are discussed. Besides an accurate specification of the thermodynamic and kinematic fields, the results highlight the role of boundary-layer convergence features for quantitative precipitation forecasts in mountainous terrain.

Item URL in elib:https://elib.dlr.de/81846/
Document Type:Article
Title:Initiation of deep convection at marginal instability in an ensemble of mesoscalemodels: a case-study from COPS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Barthlott, ChristianKIT, KarlsruheUNSPECIFIED
Burton, RalphUniv. of Leeds, UKUNSPECIFIED
Kirshbaum, Daniel J.Univ. of Reading, Reading, UKUNSPECIFIED
Hanley, KirstyUniv. of Reading, Reading, UKUNSPECIFIED
Richard, EvelyneUniv. de Toulouse, FUNSPECIFIED
Chaboureau, Jean-PierreCNRS, FUNSPECIFIED
Trentmann, JörgUniv. of MainzUNSPECIFIED
Kern, BastianUniv. of MainzUNSPECIFIED
Bauer, Hans-StefanUniv. of Hohenheim, StuttgartUNSPECIFIED
Schwitalla, ThomasUniv. of Hohenheim, StuttgartUNSPECIFIED
Keil, ChristianDLRUNSPECIFIED
Seity, YannMétéo-France, Toulouse, FUNSPECIFIED
Gadian, AlanUniv. of Leeds, UKUNSPECIFIED
Blyth, AlanUniv. of Leeds, UKUNSPECIFIED
Mobbs, StephenUniv. of Leeds, UKUNSPECIFIED
Flamant, CyrilleUniv. Pierre et Marie Curie, Paris, FUNSPECIFIED
Handwerker, JanKIT, KarlsruheUNSPECIFIED
Date:2011
Journal or Publication Title:Quarterly Journal of the Royal Meteorological Society
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:137
DOI :10.1002/qj.707
Page Range:pp. 118-136
Publisher:Wiley
ISSN:0035-9009
Status:Published
Keywords:quantitative precipitation forecast; model intercomparison; UM; WRF; M´eso-NH; AROME;COSMO; Black Forest exchange; orography; quantitative precipitation forecasting; thermally induced flow; verification
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space, Aeronautics
HGF - Program Themes:Earth Observation, ATM and Operation (old)
DLR - Research area:Raumfahrt, Aeronautics
DLR - Program:R EO - Erdbeobachtung, L AO - Air Traffic Management and Operation
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung, L - Climate, Weather and Environment (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology
Deposited By: Freund, Jana
Deposited On:12 Apr 2013 16:04
Last Modified:31 Jul 2019 19:40

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