A preliminary evaluation of the ‘simplified triangle’ with Sentinel-3 images for mapping surface soil moisture and evaporative fluxes: results obtained in a Spanish savannah environmentA preliminary evaluation of the ‘simplified triangle’ with Sentinel-3 images for mapping surface soil moisture and evaporative fluxes: results obtained in a Spanish savannah environment Κεφάλαιο σε Βιβλίο Book Chapter 2020-12-282020enThis study provides the first results from an initial exploration of the so-called ‘simplified triangle’ for estimating evaporative fraction (EF) and surface soil moisture (SSM) from remotely sensed data of land surface temperature (Ts) and a vegetation index (VI) derived from ESA's Sentinel-3 satellite. The technique is implemented for 11 cloud-free days of year 2018 in a typical savannah Mediterranean site located in Spain, which is part of the CarboEurope ground observational network. In overall, the preliminary results obtained demonstrated the potential of the technique in mapping both EF and SSM. A Root Mean Square Error (RMSE) of 0.063 and 0.048 vol vol−1 and correlation coefficient (R) of 0.777 and 0.439 for EF and SSM, respectively, were reported. Results are of considerable scientific and practical value in regards to the evaluation of the potential of the examined technique for deriving key biophysical parameters of the Earth's system.http://creativecommons.org/licenses/by/4.0/1Agricultural Water Management: Theories and PracticesPetropoulos_et_al._Agricultural Water Management: Theories and Practices_Ch.11_2020.pdfChania [Greece]Library of TUC2021-01-04application/pdf2.5 MBfree Petropoulos Georgios Πετροπουλος Γεωργιος Christopoulos Dionysios Χριστοπουλος Διονυσιος Pavlidis Andreas Παυλιδης Ανδρεας Şandric Ionuț Academic Press Modelling EF Fluxnet Earth observation Land surface interactions Sentinel-3 Simplified triangle SSM Ts/VI domain