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Multi-model simulations of a convective situation in mountainous terrain

Trentmann, Jörg and Keil, Christian and Salzmann, Marc and Barthlott, Christian and Bauer, Hans-Stefan and Schwitalla, T. and Lowrence, Mark G. and Leuenberger, Daniel and Wulfmeyer, Volker and Corsmeier, U. and Kottmeier, C. and Wernli, H. (2009) Multi-model simulations of a convective situation in mountainous terrain. Meteorology and Atmospheric Physics (103), pp. 95-103. DOI: 10.1007/s00703-008-0323-6.

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Official URL: http://www.springerlink.com/content/j655474587r82821/fulltext.pdf

Abstract

The goal of the present study is to investigate the variability of simulated convective precipitation by three convection-resolving models using different setups and initial and boundary conditions. The COSMO, MM5 and WRF models have been used to simulate the atmospheric situation on 12 July 2006, when local convection occurred in central Europe under weak synoptic forcing. The focus of this investigation is on the convective precipitation in the Northern Black Forest in South-West Germany. The precipitation fields from the nine model simulations differ considerably. Six simulations capture the convective character of the event. However, they differ considerably in the location and timing of the intense convective cells. Only one model simulation captures the early onset of precipitation; in all other simulations, the onset of convective precipitation is delayed by up to five hours. All model simulations significantly underpredict the amount of surface precipitation compared to gauge-adjusted radar observations. The simulated diurnal cycles show maximum CAPE and minimum CIN values in the early afternoon. The different onset times of precipitation in the model simulations are shifted in accordance to the simulated diurnal cycles of CAPE and CIN. In the simulations with an early onset of precipitation also maximum CAPE and minimum CIN values appear early. The amount of simulated precipitation, however, does not correlate with CAPE or CIN.

Document Type:Article
Title:Multi-model simulations of a convective situation in mountainous terrain
Authors:
AuthorsInstitution or Email of Authors
Trentmann, JörgJohannes Gutenberg Univ. Mainz, Mainz
Keil, ChristianUNSPECIFIED
Salzmann, MarcMPI for Chemistry, Mainz
Barthlott, ChristianKIT, Karlsruhe
Bauer, Hans-StefanUniv. Hohenheim, Hohenheim
Schwitalla, T.Univ. Hohenheim, Hohenheim
Lowrence, Mark G.MPI for Chemistry, Mainz
Leuenberger, DanielMeteoSwiss, Zürich, CH
Wulfmeyer, VolkerUniv. Hohenheim, Hohenheim
Corsmeier, U.KIT, Karlsruhe
Kottmeier, C.KIT, Karlsruhe
Wernli, H.Johannes Gutenberg Univ. Mainz, Mainz
Date:2009
Journal or Publication Title:Meteorology and Atmospheric Physics
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.1007/s00703-008-0323-6
Page Range:pp. 95-103
Status:Published
Keywords:COSMO, high resolution Ensemble
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: Dr.rer.nat. Christian Keil
Deposited On:17 Jul 2008
Last Modified:12 Dec 2013 20:31

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