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HAL - OMP | |
| HAL : hal-00548109, version 1 |
| DOI : 10.1002/asl.280 |
| Fiche détaillée |  Récupérer au format |
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| Atmospheric Science Letters 12, 1 (2011) 58-66 |
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| Intraseasonal variability of the West African monsoon |
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| S. Janicot 1G. Caniaux 2 |
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| (2011) |
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| The intraseasonal time scale is critical in West Africa where resources are highly rainfall dependent. Three main modes of variability have been identified, two with a mean periodicity of 15 days and one with a mean periodicity around 40 days. These modes have a regional scale and can strongly influence precipitation and convective activity. They are mainly controlled by atmospheric dynamics and land–surface interactions. They can also modulate the very specific phase of the African summer monsoon onset. A better knowledge of the mechanisms controlling this scale is necessary to improve its predictability. |
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| 1 : | Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) |
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Institut de recherche pour le développement [IRD] – INSU – CNRS : UMR7159 – Université Pierre et Marie Curie [UPMC] - Paris VI – Muséum National d'Histoire Naturelle (MNHN) |
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| 2 : | Groupe d'étude de l'atmosphère météorologique (CNRM-GAME) |
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CNRS : URA1357 – INSU – Météo France |
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| 3 : | Institut Pierre-Simon-Laplace (IPSL) |
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CNRS : FR636 – Institut de recherche pour le développement [IRD] – CEA – CNES – INSU – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – Ecole normale supérieure de Paris - ENS Paris |
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| 4 : | Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) |
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CNRS : UMR8190 – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – INSU |
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| 5 : | Centre de Recherches de Climatologie (CRC) |
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CNRS : UMR5210 – Université de Bourgogne |
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| 6 : | Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) |
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CNRS : UMR5566 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III |
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| 7 : | NOAA Earth System Research Laboratory (NOAA ESRL) |
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U.S. Department of Commerce – National Oceanic & Atmospheric Administration |
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| 8 : | Department of Atmospheric and Oceanic Sciences, McGill University |
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McGill University |
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| 9 : | School of Environmental Sciences (UEA) |
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University of East Anglia |
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| 10 : | Centre for Ecology and Hydrology (CEH) |
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NERC - Natural Environment Research Council |
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| Domaine | : | Planète et Univers/Sciences de la Terre/Météorologie |
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| West African monsoon – Intraseasonal variability – Monsoon onset – Predictability – Crop yield |
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| hal-00548109, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00548109 | |
| oai:hal.archives-ouvertes.fr:hal-00548109 | |
| Contributeur : Catherine Cardon | |
| Soumis le : Samedi 18 Décembre 2010, 17:10:03 | |
| Dernière modification le : Mercredi 2 Mars 2011, 16:07:49 | |
