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Communication incl. Poster: BibTeX citation key:  Mougin
Mougin, E., Baup, F., Ceschia, E., Damesin, C., Delon, C., Demarez, V., De Rosnay, P., Epron, D., Hiernaux, P., Jarlan, L., Kergoat, L., Lavenu, F., Le Dantec, V., Lloyd, C. R., Mangiarotti, S., Mazzega, P., Mougenot, B., Galy-Lacaux, C., Seghieri, J., Serça, D. & Timouk, F. 2005. Overview of research activities at the Gourma meso-scale site (Mali). Work presented at EGU General Assembly 2005at Vienna, Austria.
Added by: Fanny Lefebvre 2010-11-22 15:40:27
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Categories: General
Creators: Baup, Ceschia, Damesin, Delon, Demarez, Epron, Galy-Lacaux, Hiernaux, Jarlan, Kergoat, Lavenu, Le Dantec, Lloyd, Mangiarotti, Mazzega, Mougenot, Mougin, De Rosnay, Seghieri, Serça, Timouk
Publisher: European Geosciences Union (Vienna, Austria)
Collection: EGU General Assembly 2005

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Abstract
Within the AMMA project, the Gourma site in Mali is one of the 3 densely instrumented meso-scale sites dedicated to the study of the climatic and vegetation gradient over West Africa. The Gourma belongs to the Sahel and represents the northernmost site of the sub-regionalAMMAwindow. It is mainly a pastoral region bracketed by the isohyets 500 and 100 mm. The Gourma window (14.5 - 17.5°N; 1 - 2°W) was chosen to be representative of sahelian and saharo-sahelian conditions that can be observed in Sahel. Desert-like conditions prevail in its northern part whereas savannah grasslands are present in its southern part. We present the overall strategy aimed at characterizing the vegetation dynamics, the spatio-temporal variation of soil moisture and the associated energy fluxes from the surface to the atmosphere, at different spatial scales from local- to meso-scale. Combined field measurements, modelling and assimilation of multi-spectral satellite data into a coupled vegetation - SVAT model is the chosen methodology to achieve this goal. This approach uses forcing variables that are acquired through a network of automatic systems (weather stations, raingauges) and/or derived from satellite remote sensing. Vegetation, soil moisture, sap flow measurements as well as radiation data are used for model evaluation and for the validation of available satellite products. For the local intensive site, named ‘Agoufou’, automatic weather systems are complemented by the IDAF and AERONET stations allowing a long term survey of atmospheric chemistry and aerosols. Compared to the two other meso-scale sites, emphasis is put on vegetation studies including long term monitoring of vegetation dynamics.
Added by: Fanny Lefebvre