PERMAFROST DYNAMICS OBSERVATORY: RETRIEVAL OF ACTIVE LAYER THICKNESS AND SOIL MOISTURE FROM AIRBORNE INSAR AND POLSAR DATA

  • Richard H. Chen
  • , Roger J. Michaelides
  • , Yuhuan Zhao
  • , Lingcao Huang
  • , Elizabeth Wig
  • , Taylor D. Sullivan
  • , Andrew D. Parsekian
  • , Howard A. Zebker
  • , Mahta Moghaddam
  • , Kevin M. Schaefer

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations

Abstract

The Permafrost Dynamics Observatory (PDO) combines L-band interferometric synthetic aperture radar (InSAR) and P-band polarimetric synthetic aperture radar (PolSAR) to simultaneously estimate the seasonal thaw depth and soil moisture profile of the active layer in permafrost regions. L-band InSAR can measure seasonal subsidence due to thawing of the active layer and P-band PolSAR backscatter is sensitive to subsurface soil moisture. A joint retrieval scheme is developed as both subsidence and soil moisture are essential to accurate active layer thickness (ALT) estimation. The PDO joint retrieval has been applied to airborne L- and P-band SAR data acquired over Arctic-boreal region during the 2017 Arctic-Boreal Vulnerability Experiment (ABoVE) airborne campaign. In this paper, we describe the forward models and joint inversion used in the PDO retrievals and compare the results with in-situ ALT and soil moisture data estimated from ground-penetrating radar (GPR).

Original languageEnglish
Pages1444-1447
Number of pages4
DOIs
StatePublished - 2021
Event2021 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2021 - Brussels, Belgium
Duration: Jul 12 2021Jul 16 2021

Conference

Conference2021 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2021
Country/TerritoryBelgium
CityBrussels
Period07/12/2107/16/21

Keywords

  • ABoVE
  • AirMOSS
  • InSAR
  • Permafrost active layer thickness
  • PolSAR
  • radar remote sensing
  • soil moisture
  • UAVSAR

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