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Precipitation on the lee side of the Vosges Mountains: Multi-instrumental study of one case from the COPS campaign

Labbouz, L. and van Baelen, Joel and Tridon, F. and Reverdy, M. and Hagen, Martin and Bender, M. and Dick, Galina and Gorgas, Theresa and Planche, Celine (2013) Precipitation on the lee side of the Vosges Mountains: Multi-instrumental study of one case from the COPS campaign. Meteorologische Zeitschrift, 22 (4), pp. 413-432. Borntraeger Science Publishers. DOI: 10.1127/0941-2948/2013/0413 ISSN 0941-2948

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Official URL: http://www.ingentaconnect.com/content/schweiz/mz/2013/00000022/00000004/art00004

Abstract

In this article, we focus on one case study from the Convective and Orographically-induced Precipitation Study (COPS), which took place in north-eastern France and south-western Germany during the summer of 2007, in a low mountain area. We investigate lee side precipitation due to shallow and deep convection during one Intensive Observation Period (IOP) of COPS which have been well documented by all the instruments. For that aim, we use a set of observations from radars, radiosoundings, satellite, and a network of Global Positioning System (GPS) receivers, as well as meteorological analyses and dedicated model simulation results. The combination of these measurements with GPS tomography results suggests the role of low level water vapour accumulation and convergence as a precursor to the convective initiation. The origin of this moistening and wind convergence seems to be linked to a slight change in the wind direction in the north-west part of the COPS domain. Using a high resolution X band radar, we also describe how small scale orography affects the precipitation locations, and we show the role of hills near the mouths of the valleys in convective enhancement. This observation is confirmed by model simulation showing that convection is no longer enhanced when the hills are suppressed. The further intensification of one convective cell over the Rhine Valley, which is climatologically frequent, is also discussed.

Item URL in elib:https://elib.dlr.de/85999/
Document Type:Article
Title:Precipitation on the lee side of the Vosges Mountains: Multi-instrumental study of one case from the COPS campaign
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Labbouz, L.Univ. de Clermont-Ferrand, FUNSPECIFIED
van Baelen, JoelUniv. de Clermont-Ferrand, FUNSPECIFIED
Tridon, F.Univ. de Clermont-Ferrand, FUNSPECIFIED
Reverdy, M.Univ. de Clermont-Ferrand, FUNSPECIFIED
Hagen, MartinDLR, IPAUNSPECIFIED
Bender, M.GPS, PotsdamUNSPECIFIED
Dick, GalinaGPS, PotsdamUNSPECIFIED
Gorgas, TheresaDept. of Meteorology and Geophysics, University Vienna, AustriaUNSPECIFIED
Planche, CelineUniv. de Clermont-Ferrand, FUNSPECIFIED
Date:2013
Journal or Publication Title:Meteorologische Zeitschrift
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:22
DOI :10.1127/0941-2948/2013/0413
Page Range:pp. 413-432
Publisher:Borntraeger Science Publishers
ISSN:0941-2948
Status:Published
Keywords:COPS, convection, GPS meteorology
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: Ziegele, Brigitte
Deposited On:29 Nov 2013 17:47
Last Modified:08 Mar 2018 18:46

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