Limitations in Validating Derived Soil Water Content from Thermal/Optical Measurements Using the Simplified Triangle Method

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dc.contributor.authorKasim, Abba Aliyu
dc.contributor.authorCarlson, Toby Nahum
dc.contributor.authorUsman, Haruna Shehu
dc.date.accessioned2023-04-30T11:40:44Z
dc.date.available2023-04-30T11:40:44Z
dc.date.issued2020-04-04
dc.descriptionRemote Sens. 2020, 12(7), 1155;en_US
dc.description.abstractWe assess the validity of the surface moisture availability parameter (Mo) derived from satellite-based optical/thermal measurements using the simplified triangle method. First, we show that Mo values obtained from the simplified triangle method agree closely with those generated from a soil/vegetation/atmosphere/transfer (SVAT) model for scenes over a field site at the Allahabad district, India. Next, we compared Mo values from the simplified triangle method for these same overpass scenes with surface soil water content measured at depths of 5 and 15 cm at this field site. Although a very weak correlation exists between remotely sensed values of Mo for the full scenes and measured soil water content measured at both depths, correlations increasingly improve for the 5 cm samples (but not for the 15 cm samples) as pixels were limited to increasingly smaller vegetation fractions. We conclude that the simplified triangle method would yield reasonable values of Mo and demonstrate good agreement with ground measurements, provided that validation is limited to pixels with little or no vegetation and to soil depths of 5 cm or less.en_US
dc.description.sponsorshipACE Impact: Dryland Agriculture, CDAen_US
dc.identifier.citationAliyu Kasim, A., Nahum Carlson, T., & Shehu Usman, H. (2020). Limitations in validating derived soil water content from thermal/optical measurements using the simplified triangle method. Remote Sensing, 12(7), 1155.en_US
dc.identifier.urihttps://doi.org/10.3390/rs12071155
dc.language.isoenen_US
dc.publisherMDPI (Multidisciplinary Digital Publishing Institute)en_US
dc.subjectsimplified triangle methoden_US
dc.subjectsoil water contenten_US
dc.subjectsatellite-based optical/thermal measurementen_US
dc.subjectlimitationen_US
dc.subjectvalidatingen_US
dc.subjectCDAen_US
dc.subjectNigeriaen_US
dc.subjectBayero University, Kanoen_US
dc.titleLimitations in Validating Derived Soil Water Content from Thermal/Optical Measurements Using the Simplified Triangle Methoden_US
dc.typeArticleen_US
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