Changes in the African monsoon region at medium-term time horizon using 12 AR4 coupled models under the A1b emissions scenario.

6533b7d1fe1ef96bd125cf08

RESEARCH PRODUCT

Changes in the African monsoon region at medium-term time horizon using 12 AR4 coupled models under the A1b emissions scenario.

Bernard Fontaine Paul-arthur Monerie Pascal Roucou

subject

Wet season Atmospheric Science Climate change Time horizon Subtropics Precipitation Monsoon Atmospheric sciences West africa Latitude [ SDE.MCG ] Environmental Sciences/Global Changes African monsoon Climatology West Africa Environmental science Climate change Precipitation [ SDU.STU.CL ] Sciences of the Universe [physics]/Earth Sciences/Climatology

description

This study documents simulated precipitation and circulation changes through the 20C3M and A1b scenarios. It portrays a robust pattern, associating rainfall deficits in subtropical regions with rainfall excesses over West Africa, except in Northern Senegal and Mauritania, with a significant enhancement of both the April–June rainy season in 10/12 models and of the July–September rainy season in 8/12 models. Eastward to 5°W a northward shift in the latitude of the moisture flux convergence at 850 hPa is evident in 10/11 models (+0.58° in mean) and a southward shift in 6/11 models in the western region (−0.24°) is observed. Copyright © 2011 Royal Meteorological Society

year	journal	country	edition	language
2011-02-25

https://hal.archives-ouvertes.fr/hal-00463573/file/Fontaine_et_al_ASL_2010.pdf

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