Validation of satellite-based soil moisture algorithms

Thomas J. Jackson

doi:10.1117/12.677851

1 September 2006 Validation of satellite-based soil moisture algorithms

Thomas J. Jackson

Proceedings Volume 6301, Atmospheric and Environmental Remote Sensing Data Processing and Utilization II: Perspective on Calibration/Validation Initiatives and Strategies; 63010D (2006) https://doi.org/10.1117/12.677851
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

Validation is an important but particularly challenging task for passive microwave remote sensing of soil moisture from Earth orbit. The key issue is spatial scale; conventional measurements of soil moisture are made at a point whereas satellite sensors provide an integrated area/volume value for a much larger spatial extent. For microwave remote sensing from space it is necessary to consider the kilometer to 40 km scale, which presents new challenges. This issue of spatial scale is common to both current and future satellite missions. Regardless of the degree of difficulty, ground based sampling must remain a core component of validation. An integrated approach using in situ networks, field campaigns and comparison to other satellite products is described.

Citation Download Citation

Thomas J. Jackson "Validation of satellite-based soil moisture algorithms", Proc. SPIE 6301, Atmospheric and Environmental Remote Sensing Data Processing and Utilization II: Perspective on Calibration/Validation Initiatives and Strategies, 63010D (1 September 2006); https://doi.org/10.1117/12.677851

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