Lagrangian evaluation of convective shower characteristics in a convection-permitting model

Convection-permitting models (CPMs) have proven their usefulness in representing precipitation on a sub-daily scale. However, investigations on sub-hourly scales are still lacking, even though these are the scales for wh
Convection-permitting models (CPMs) have proven their usefulness in representing precipitation on a sub-daily scale. However, investigations on sub-hourly scales are still lacking, even though these are the scales for which showers exhibit the most variability. A Lagrangian approach is implemented here to evaluate the representation of showers in a CPM, using the limited-area climate model COSMO-CLM. This approach consists of tracking 5‑min precipitation fields to retrieve different features of showers (e.g., temporal pattern, horizontal speed, lifetime). In total, 312 cases are simulated at a resolution of 0.01 ° over Central Germany, and among these cases, 78 are evaluated against a radar dataset. The model is able to represent most observed features for different types of convective cells. In addition, the CPM reproduced well the observed relationship between the precipitation characteristics and temperature indicating that the COSMO-CLM model is sophisticated enough to represent the climatological features of showers.
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Metadaten
Author:Erwan Brisson, Christoph Brendel, Stephan Herzog, Bodo Ahrens
URN:urn:nbn:de:hebis:30:3-463687
DOI:http://dx.doi.org/10.1127/metz/2017/0817
ISSN:1610-1227
ISSN:0941-2948
Parent Title (German):Meteorologische Zeitschrift
Publisher:E. Schweizerbart Science Publishers
Place of publication:Stuttgart
Document Type:Article
Language:English
Year of Completion:2018
Date of first Publication:2018/01/29
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2018/05/03
Tag:COSMO-CLM; Convection; Precipitation; Sub-hourly scale
Volume:27
Issue:1
Pagenumber:8
First Page:59
Last Page:66
Note:
CC BY NC
HeBIS PPN:432029427
Institutes:Geowissenschaften
Dewey Decimal Classification:550 Geowissenschaften
Sammlungen:Universitätspublikationen
Open-Access-Publikationsfonds:Geowissenschaften / Geographie
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell 3.0

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