Estimating African daily evapotranspiration using MODIS and MSG data

被引：0
|
作者：
Sun, Zhigang [1 ]
Gebremichael, Mekonnen [1 ]
机构：
[1] Univ Connecticut, Storrs, CT 06269 USA
来源：
REMOTE SENSING AND HYDROLOGY | 2012年 / 352卷
关键词：
daily evapotranspiration; evaporation fraction; net radiation; soil heat flux; Sim-ReSET; MODIS; Terra; SEVIRI; MSG; Africa; LANDSAT-TM;
D O I：
暂无
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
A methodology is proposed to estimate African daily evapotranspiration (ET) by merging data from the MODIS onboard the polar-orbiting Terra satellite and the SEVIRI onboard the geostationary-orbiting MSG satellite. The estimated daily ET values are compared with the eddy covariance measurements at four sites (3 savanna sites and 1 forest site) in Africa. Results show a bias of around 1 mm/day between daily ET estimates and ground measurements in warm and humid seasons, but a relatively large bias in cold and dry seasons. This bias may come from uncertainties in daily net radiation and instantaneous evaporation fraction estimations.
引用
收藏
页码：440 / 443
页数：4
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