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Scientific journal publication

Validation practices for satellite soil moisture retrievals: What are (the) errors?

Gruber, Alexander; de Lannoy, Gabriëlle J.M; Albergel, Clément; Al-Yaari, Amen; Brocca, Luca; Calvet, Jean-Christophe; Colliander, Andreas; Cosh, Michael H.; Crow, Wade T.; Dorigo, Wouter Arnaud; Draper, Clara Sophie; Hirschi, Martin; Kerr, Yann H.; Konings, Alexandra G.; Lahoz, William A.; McColl, Kaighin Alexander; Montzka, Carsten; Muñoz-Sabater, Joaquín ; Peng, Jian; Reichle, Rolf H.; Richaume, Philippe; Rüdiger, Christoph; Scanlon, Tracy; van der Schalie, Robin; Wigneron, Jean Pierre; Wagner, Wolfgang

Publication details

Journal: Remote Sensing of Environment, vol. 244, 111806, 2020

Arkiv: hdl.handle.net/11250/2657814
Doi: doi.org/10.1016/j.rse.2020.111806

Summary:
This paper presents a community effort to develop good practice guidelines for the validation of global coarse-scale satellite soil moisture products. We provide theoretical background, a review of state-of-the-art methodologies for estimating errors in soil moisture data sets, practical recommendations on data pre-processing and presentation of statistical results, and a recommended validation protocol that is supplemented with an example validation exercise focused on microwave-based surface soil moisture products. We conclude by identifying research gaps that should be addressed in the near future.