Author(s): Domenico De Santis; Daniela Biondi
Linked Author(s):
Keywords: Error propagation; Exponential filter; Soil moisture; Soil water index; Uncertainty
Abstract: In this study an error propagation (EP) scheme was introduced in parallel to exponential filter computation for soil water index (SWI) estimation. A preliminarily assessment of the computed uncertainties was carried out comparing satellite-derived SWI and reference root-zone in situ measurements. The EP scheme has shown skills in detecting potentially less reliable SWI values in the study sites, as well as a better understanding of the exponential filter shortcomings. The proposed approach shows a potential for SWI evaluation, providing simultaneous estimates of time-variant uncertainty.
Year: 2018