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Interactions entre surface et convection au Sahel

Guichard, Francoise; Kergoat, Laurent; Taylor, Christopher M.; Cappelaere, Bernard; Chong, Michel; Cohard, Jean-Martial; Couvreux, Fleur; Dione, Cheikh; Gounou, Amanda; Lohou, Fabienne; Lothon, Marie. 2012 Interactions entre surface et convection au Sahel. La Meteorologie, 2012 (Oct). 25-32. 10.4267/2042/48129

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Abstract/Summary

Strong interactions and feedbacks between surface processes and deep convection occur in the Sahel. They take place over a wide range of scales. They are found to enhance surfaceatmosphere energy exchanges during the monsoon and to generate a large variability of surface sensible and latent heat fluxes in time and space.A positive feedback is observed between this variability, or more accurately soil moisture heterogeneities, and the frequency of initiation of convective systems. This feedback operates at fine scale, on the order of a few tens of kilometres. The underlying mechanisms and their modelling are discussed.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.4267/2042/48129
Programmes: CEH Topics & Objectives 2009 - 2012 > Biogeochemistry > BGC Topic 2 - Biogeochemistry and Climate System Processes > BGC - 2.3 - Determine land-climate feedback processes to improve climate model predictions
CEH Sections: Reynard
ISSN: 0026-1181
Additional Information. Not used in RCUK Gateway to Research.: Open Access paper - click on Official URL link for full text. In French; title in English: Interactions between land surface and convective processes in the Sahel
NORA Subject Terms: Meteorology and Climatology
Date made live: 08 Nov 2012 10:13
URI: http://nora.nerc.ac.uk/id/eprint/19577

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