gchange  > 影响、适应和脆弱性
DOI: 10.1002/2016MS000697
Scopus ID: 2-s2.0-85011277271
Title:
Understanding the West African Monsoon from the analysis of diabatic heating distributions as simulated by climate models
Author: Martin G; M; , Peyrillé P; , Roehrig R; , Rio C; , Caian M; , Bellon G; , Codron F; , Lafore J; -P; , Poan D; E; , Idelkadi A
Source Publication: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
Indexed By: SCI-E ; EI
Publishing Year: 2017
Volume: 9, Issue:1
pages begin: 239
pages end: 270
Language: 英语
Keyword: Atmospheric thermodynamics ; Boundary layers ; Heating ; Models ; Boundary layer mixing ; Diabatic ; Horizontal distribution ; Large-scale circulation ; Monsoon ; Small-scale process ; West Africa ; West African Monsoon ; Climate models ; atmospheric convection ; boundary layer ; CMIP ; diabatic process ; environmental disturbance ; heat flow ; heating ; monsoon ; radiative forcing ; rainband ; vertical mixing ; Sahara
English Abstract: Vertical and horizontal distributions of diabatic heating in the West African monsoon (WAM) region as simulated by four model families are analyzed in order to assess the physical processes that affect the WAM circulation. For each model family, atmosphere-only runs of their CMIP5 configurations are compared with more recent configurations which are on the development path toward CMIP6. The various configurations of these models exhibit significant differences in their heating/moistening profiles, related to the different representation of physical processes such as boundary layer mixing, convection, large-scale condensation and radiative heating/cooling. There are also significant differences in the models' simulation of WAM rainfall patterns and circulations. The weaker the radiative cooling in the Saharan region, the larger the ascent in the rainband and the more intense the monsoon flow, while the latitude of the rainband is related to heating in the Gulf of Guinea region and on the northern side of the Saharan heat low. Overall, this work illustrates the difficulty experienced by current climate models in representing the characteristics of monsoon systems, but also that we can still use them to understand the interactions between local subgrid physical processes and the WAM circulation. Moreover, our conclusions regarding the relationship between errors in the large-scale circulation of the WAM and the structure of the heating by small-scale processes will motivate future studies and model development. © 2016. The Authors.
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被引频次[WOS]:3   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/75836
Appears in Collections:影响、适应和脆弱性
气候变化与战略

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Affiliation: Met Office Hadley Centre, Exeter, United Kingdom; Centre National de Recherches Météorologiques, Météo-France and CNRS, Toulouse, France; Laboratoire de Météorologie Dynamique, Institut Pierre-Simon Laplace, Paris, France; Rossby Centre, Swedish Meteorological and Hydrological Institute, Norrköping, Sweden; Now at Department of Physics, University of Auckland, New Zealand; Now at Canadian Network for Regional Climate and Weather Processes, Université du Quebec, Montréal, Canada

Recommended Citation:
Martin G,M,, Peyrillé P,et al. Understanding the West African Monsoon from the analysis of diabatic heating distributions as simulated by climate models[J]. Journal of Advances in Modeling Earth Systems,2017-01-01,9(1)
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