evapotranspiration; global scale; spatialisation; NDVI; surface temperature
Abstract :
[en] To estimate actual evapotranspiration on regional scale, seven subcatchments were choosen on fleuve Niger catchment where we have selected stations for representative meteorological measurements. Precipitation values are spatially represented by using Thiessen polygons and Kriging methods and, based on water balance equation, we deduce the actual evapotranspiration term.The goal (objective) of this study is to deduce from the water balance equation the evapotranspiration term, to correlate remote sensing indicators (surface temperature and NDVI) and evapotranspiration data and characterise factors that affect this correlation.
Tychon, Bernard ; Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Département des sciences et gestion de l'environnement
Language :
English
Title :
Estimation of actual evapotranspiration at large watershed scale in Africa using NOAA-AVHRR surface temperature and NDVI.
Publication date :
1997
Event name :
1997 Meteorological satellite data users' conference
Event organizer :
Eumetsat
Event place :
Brussels, Belgium
Event date :
du 29 septembre 1997 au 3 octobre 1997
Audience :
International
Main work title :
1997 Meteorological satellite data users' conference Proceedings
