Estimating Soil Moisture Profiles by Combining P-Band SAR with Hydrological Modeling

Anke Fluhrer*, Thomas Jagdhuber, Carsten Montzka, Maike Schumacher, Hamed Alemohammad, Alireza Tabatabaeenejad, Harald Kunstmann, Dara Entekhabi

*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

A joint approach for estimating vertically continuous soil moisture profiles by combining P-band SAR polarimetry with soil hydrological modeling is proposed. The approach compares the decomposed soil scattering component from remotely sensed P-band SAR observations of NASA's Airborne Microwave Observatory of Subcanopy and Subsurface (AirMOSS) mission with an ensemble of simulated counterparts based on the hydrological model HYDRUS-1D and the soil scattering model multi-layer small perturbation method (SPM). From the best fit between remote sensing and soil modeling, the most probable soil moisture profile can be retrieved. Estimated soil moisture profiles at individual monitoring stations across the U.S. are compared to in situ measurements, as well as the European ReAnalysis (ERA5) land and AirMOSS L4 products. Pearson's coefficient of determination between estimated and auxiliary products prove the overall feasibility of the proposed method with respective R2 of 0.92, 0.95, and 0.87.

Original languageEnglish
Title of host publicationIGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, Proceedings
Number of pages4
PublisherIEEE (Institute of Electrical and Electronics Engineers)
Publication date20 Oct 2023
Pages2846-2849
ISBN (Print)979-8-3503-2009-1, 979-8-3503-3174-5
ISBN (Electronic)979-8-3503-2010-7
DOIs
Publication statusPublished - 20 Oct 2023
Event2023 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2023 - Pasadena, United States
Duration: 16 Jul 202321 Jul 2023

Conference

Conference2023 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2023
Country/TerritoryUnited States
CityPasadena
Period16/07/202321/07/2023
SponsorThe Institute of Electrical and Electronics Engineers Geoscience and Remote Sensing Society (GRSS)
SeriesIEEE International Geoscience and Remote Sensing Symposium IGARSS
ISSN2153-7003

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

  • AirMOSS
  • HYDRUS-1D
  • multi-layer SPM
  • polarimetry
  • SAR
  • soil moisture profile

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