Comparison of three methods based on the temperature-NDVI diagram for soil moisture characterization

Jean-Claude Krapez; Albert Olioso; Benoit Coudert

doi:10.1117/12.830451

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18 September 2009 Comparison of three methods based on the temperature-NDVI diagram for soil moisture characterization

Jean-Claude Krapez, Albert Olioso, Benoit Coudert

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Proceedings Volume 7472, Remote Sensing for Agriculture, Ecosystems, and Hydrology XI; 74720Y (2009) https://doi.org/10.1117/12.830451
Event: SPIE Remote Sensing, 2009, Berlin, Germany

Abstract

The triangle/trapezoid method is a well known method for retrieving spatialized soil moisture from remotely sensed temperature and vegetation index (NDVI). We selected three approaches with different requirements for ancillary data (triangle empirical method by Sandholt et al. [7], trapezoid method by Moran et al. [2], SVAT triangle method by Carlson et al. [3]-[6]). The empirical inversion is well suited when no information on meteorological data is available. Otherwise, one can build theoretical isolines in the T-NDVI-moisture space by applying the Penman-Monteith equation or by using a detailed SVAT model. The three approaches were compared by using remote sensing data obtained during the airborne HyEurope 2007 campaign over Camargue, south of France. We showed that the SVAT-triangle method has a potential for separately identifying surface moisture and root zone moisture.

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Jean-Claude Krapez, Albert Olioso, and Benoit Coudert "Comparison of three methods based on the temperature-NDVI diagram for soil moisture characterization", Proc. SPIE 7472, Remote Sensing for Agriculture, Ecosystems, and Hydrology XI, 74720Y (18 September 2009); https://doi.org/10.1117/12.830451

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