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

被引：49

作者：

Taylor, Christopher M. ^{[1
]}

Parker, Douglas J. ^{[2
]}

Kalthoff, Norbert ^{[3
]}

Angel Gaertner, Miguel ^{[4
]}

Philippon, Nathalie ^{[5
]}

Bastin, Sophie ^{[6
]}

Harris, Phil P. ^{[1
]}

Boone, Aaron ^{[7
,8
]}

Guichard, Francoise ^{[7
,8
]}

Agusti-Panareda, Anna ^{[9
]}

Baldi, Marina ^{[10
]}

Cerlini, Paolina ^{[11
]}

Descroix, Luc ^{[12
]}

Douville, Herve ^{[7
,8
]}

Flamant, Cyrille ^{[6
]}

Grandpeix, Jean-Yves ^{[13
]}

Polcher, Jan ^{[13
]}

机构：

[1] Ctr Ecol & Hydrol, Wallingford OX10 8BB, Oxon, England

[2] Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England

[3] Karlsruhe Inst Technol, Inst Meteorol & Climate Res, D-76344 Eggenstein Leopoldshafen, Germany

[4] Univ Castilla La Mancha, Environm Sci Fac, Toledo, Spain

[5] Univ Bourgogne, Dijon, France

[6] UPMC, CNRS INSU, LATMOS IPSL, Paris, France

[7] CNRS, CNRM, Toulouse, France

[8] Meteo France, Toulouse, France

[9] European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England

[10] Ibimet CNR, Inst Biometeorol, I-00185 Rome, Italy

[11] CRC UniPg, Perugia, Italy

[12] IRD, Niamey, Niger

[13] CNRS, LMD IPSL, Paris, France

来源：

ATMOSPHERIC SCIENCE LETTERS | 2011年 / 12卷 / 01期

关键词：

soil moisture; convection; planetary boundary layer; WEST-AFRICA; INTRASEASONAL VARIABILITY; SURFACE; RAINFALL; CLIMATE; SAHEL; VEGETATION; DYNAMICS; IMPACT; MODEL;

D O I：

10.1002/asl.336

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Research into land-atmosphere coupling within the African Monsoon Multidisciplinary Analysis 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 a 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. Copyright (C) 2011 Royal Meteorological Society

引用

页码：38 / 44

页数：7

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