The purpose of this work is to investigate the possible use of MODIS and ENVISAT-ASAR Data to extract soil moisture (SM) field and validate the developed systems by means of in situ measurements.
The main idea of this study concerns the advantages that could arise from a continuous and almost real time SM monitoring, permitted by wide-swath passive optical sensors that allow evaluating the dynamic evolution of different phenomena on a wide range of application fields: from hydrological monitoring and management to agricultural applications and so on. Observations provided by MODIS have no direct physical relation with soil water content. On the other hand, the relationship between Land Surface temperature (LST), NDVI and in situ measurements have shown many potentialities to indirectly retrieve SM information.
The use of SAR data for validation purposes is envisaged but not yet applied.
Calibration and validation phases are performed over a test site where in situ measurements are available.
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Natali, S. et al. (2009). Estimating Soil Moisture Using Optical and Radar Satellite Remote Sensing Data. In: Marini, A., Talbi, M. (eds) Desertification and Risk Analysis Using High and Medium Resolution Satellite Data. NATO Science for Peace and Security Series C: Environmental Security. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-8937-4_9
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