Smos Soil Moisture Values Evaluation over Sahelian Area
نویسندگان
چکیده
Soil moisture is one of the most important variable that in uences the soil-vegetation-atmosphere uxes. However, due to its high temporal and spatial variability, it is dif cult to provide accurate quantitative information on soil moisture at regional and global scales. Different approaches exist, but remote sensing is the more appropriated to measure soil moisture values and its variations. It can provide spatially integrated information over large areas. Microwave remote sensing at low frequencies is the most ef cient approach to characterize soil moisture from space [1]. SMOS (Soil Moisture and Ocean Salinity), launched on November 2th 2009, records brightness temperature in L-band at space resolution of 50km. SMOS is the rst sensor dedicate to soil water content measurements.
منابع مشابه
Access to Soil Moisture Values over a Sahelian Area: Modeling, Remote Sensing, and Groundmeasurements
Soil moisture is one of the most important variables that influences the soil-vegetation-atmosphere fluxes. This is particularly true over the Sahelian region, soil moisture has an important feedback on precipitation. It is particularly difficult to access to soil moisture values because its high temporal and spatial variability. Different approaches exist, but microwave remote sensing is the m...
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