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New perspectives on land-atmosphere feedbacks from the African Monsoon Multidisciplinary Analysis (AMMA)

Taylor, Christopher M.; Parker, Douglas J.; Kalthoff, Norbert; Gaertner, Miguel Angel; Philippon, Nathalie; Bastin, Sophie; Harris, Phil P.; Boone, Aaron; Guichard, Francoise; Agusti-Panareda, Anna; Baldi, Marina; Cerlini, Paolina; Descroix, Luc; Douville, Herve; Flamant, Cyrille; Grandpeix, Jean-Yves; Polcher, Jan. 2011 New perspectives on land-atmosphere feedbacks from the African Monsoon Multidisciplinary Analysis (AMMA). Atmospheric Science Letters, 12 (1). 38-44. 10.1002/asl.336

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Abstract/Summary

Research into land-atmosphere coupling within AMMA has highlighted the atmospheric impact of soil moisture on space scales of 5 km upwards and time scales of several days. Observational and modelling studies have shown how antecedent rainfall patterns affect new storms in the Sahel. The land feedback operates through various mechanisms, including a direct link to afternoon storm initiation from surface-induced mesoscale circulations, and indirectly via large-scale moisture transport in the nocturnal monsoon. The results suggest potential for significant improvements in weather forecasting through assimilation of satellite data. Intriguing questions remain about the importance of vegetation memory on seasonal-interannual scales.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1002/asl.336
Programmes: CEH Topics & Objectives 2009 onwards > Biogeochemistry > BGC Topic 2 - Biogeochemistry and Climate System Processes > BGC - 2.3 - Determine land-climate feedback processes to improve climate model predictions
CEH Sections: Harding (to 31.07.11)
ISSN: 1530-261X
Additional Keywords: soil moisture, convection, planetary boundary layer
NORA Subject Terms: Meteorology and Climatology
Hydrology
Related URLs:
Date made live: 16 Mar 2011 11:36
URI: http://nora.nerc.ac.uk/id/eprint/9256

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