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Evaluation of 18 satellite- and model-based soil moisture products using in situ measurements from 826 sensors

Authors: Hylke E. Beck , Ming Pan , Diego G. Miralles , Rolf H. Reichle , Wouter A. Dorigo

DOI: 10.5194/HESS-25-17-2021

Keywords: Atmospheric sciencesPearson product-moment correlation coefficientWater contentIrrigation schedulingEnvironmental scienceBrightness temperatureData assimilationPrecipitationCalibration (statistics)Satellite

Description: Information about the spatiotemporal variability of soil moisture is critical for many purposes, including monitoring of hydrologic extremes, irrigation scheduling, and prediction of agricultural yields. We evaluated the temporal dynamics of 18 state-of-the-art (quasi-) global near-surface soil moisture products, including six based on satellite retrievals, six based on models without satellite data assimilation (referred to hereafter as “open-loop” models), and six based on models that assimilate satellite soil moisture or brightness temperature data …

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