Artículo
A method for soil moisture probes calibration and validation of satellite estimates
Fecha de publicación:
07/2017
Editorial:
Elsevier Science
Revista:
MethodsX
ISSN:
2215-0161
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Optimization of field techniques is crucial to ensure high quality soil moisture data. The aim of the work is to present a sampling method for undisturbed soil and soil water content to calibrated soil moisture probes, in a context of the SMOS (Soil Moisture and Ocean Salinity) mission MIRAS Level 2 soil moisture product validation in Pampean Region of Argentina. The method avoids soil alteration and is recommended to calibrated probes based on soil type under a freely drying process at ambient temperature. A detailed explanation of field and laboratory procedures to obtain reference soil moisture is shown. The calibration results reflected accurate operation for the Delta-T thetaProbe ML2x probes in most of analyzed cases (RMSE and bias ≤ 0.05 m3/m3). Post-calibration results indicated that the accuracy improves significantly applying the adjustments of the calibration based on soil types (RMSE ≤ 0.022 m3/m3, bias ≤ −0.010 m3/m3). • A sampling method that provides high quality data of soil water content for calibration of probes is described.• Importance of calibration based on soil types.• A calibration process for similar soil types could be suitable in practical terms, depending on the required accuracy level.
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Colecciones
Articulos(CCT - TANDIL)
Articulos de CTRO CIENTIFICO TECNOLOGICO CONICET - TANDIL
Articulos de CTRO CIENTIFICO TECNOLOGICO CONICET - TANDIL
Citación
Holzman, Mauro Ezequiel; Rivas, Raúl Eduardo; Carmona, Facundo; Niclòs, Raquel; A method for soil moisture probes calibration and validation of satellite estimates; Elsevier Science; MethodsX; 4; 7-2017; 243-249
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