Transcript Laurent Kergoat CESBIO (CNRS/CNES/IRD) Toulouse France

Laurent Kergoat
CESBIO (CNRS/CNES/IRD) Toulouse France
People from CESBIO involved in AMMA (African Monsoon Multi-Disciplinary
Analyses) : Eric Mougin, Patricia de Rosnay, Valerie Le Dantec Josiane Seghieri,
François Lavenu, Franck Timouk, Bernard Mougenot, Pierre Hiernaux.
Remote sensing (active, passive mwave, optic), biogeochemistry, ecophysiology,
surface-atmosphere interactions)
AMMA : UE + french + UK + German projects.
Gourma
Niamey
Ouémé
Dynamics of African monsoon :
LOP : 2000-2010, EOP : 2005-2007, including SOP 2006
Gourma mesoscale Site (~300 x 100 km)
Bamba local Site
50 mm
(17.1°N, 1.3°W)
100 mm
Hombori Supersite
(15.4°N, 1.6°W)
Raingauge AMMA
Raingauge Mali
Met station+rad. Bal.
LE Flux station
H flux station
Long term vegetation
surve sitey
Agoufou local Site
(15.3°N, 1.5°W)
350 mm
450 mm
Agoufou : radiative balance 2002, 2003, 2004 - ...
seasonal and interannual effects : grasses, litter + surface soil moisture effects
Bamba : 2004- …
higher albedo, no or very weak vegetation effect in 2004 (dry)
Sites homogeneous at 3 km scale
biomass monitoring (1 km line, sampling scheme)
soil moisture sampling
sun photometer (Agoufou)
Our interest in having the ‘best’ albedo products ! with expert
opinions.
No dedicated albedo up-scaling exercise done so far or scheduled
but high resolution RS data have been and are being aquired,
up-scaling has been or will be done for grasses biomass, LAI, soil
moisture.
If albedo validation approach successful, possibility to generalize
to forthcoming AMMA sites (to be discussed with PIs).