Sentinel-1 Backscatter Assimilation Using Support Vector Regression or the Water Cloud Model at European Soil Moisture Sites

Dominik Rains, Hans Lievens, Gabrielle J. M. De Lannoy, Matthew McCabe, Richard A. M. de Jeu, Diego G. Miralles

Research output: Contribution to journalArticlepeer-review

Abstract

Sentinel-1 backscatter observations were assimilated into the Global Land Evaporation Amsterdam Model (GLEAM) using an ensemble Kalman filter. As a forward operator, which is required to simulate backscatter from soil moisture and leaf area index (LAI), we evaluated both the traditional water cloud model (WCM) and the support vector regression (SVR). With SVR, a closer fit between backscatter observations and simulations was achieved. The impact on the correlation between modeled and in situ soil moisture measurements was similar when assimilating the Sentinel data using WCM (Δ R = +0.037) or SVR (Δ R = +0.025).
Original languageEnglish (US)
Pages (from-to)1-5
Number of pages5
JournalIEEE Geoscience and Remote Sensing Letters
DOIs
StatePublished - 2021

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Electrical and Electronic Engineering

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