Permafrost Dynamics Observatory (PDO): 2. Joint Retrieval of Permafrost Active Layer Thickness and Soil Moisture From L‐Band InSAR and P‐Band PolSAR
Abstract Seasonal subsidence induced by ground ice melt can be measured by interferometric synthetic aperture radar (InSAR) techniques to infer active layer thickness (ALT) in permafrost regions. The magnitude of subsidence depends on both how deep the soil thawed and how much ice/water content exis...
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American Geophysical Union (AGU)
2023
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Online Access: | https://doi.org/10.1029/2022EA002453 https://doaj.org/article/84ebcbc88e44472aa8b7a64ee489144c |
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ftdoajarticles:oai:doaj.org/article:84ebcbc88e44472aa8b7a64ee489144c 2023-05-15T13:02:56+02:00 Permafrost Dynamics Observatory (PDO): 2. Joint Retrieval of Permafrost Active Layer Thickness and Soil Moisture From L‐Band InSAR and P‐Band PolSAR 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 2023-01-01T00:00:00Z https://doi.org/10.1029/2022EA002453 https://doaj.org/article/84ebcbc88e44472aa8b7a64ee489144c EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2022EA002453 https://doaj.org/toc/2333-5084 2333-5084 doi:10.1029/2022EA002453 https://doaj.org/article/84ebcbc88e44472aa8b7a64ee489144c Earth and Space Science, Vol 10, Iss 1, Pp n/a-n/a (2023) InSAR PolSAR UAVSAR permafrost active layer thickness soil moisture Astronomy QB1-991 Geology QE1-996.5 article 2023 ftdoajarticles https://doi.org/10.1029/2022EA002453 2023-01-29T01:26:13Z Abstract Seasonal subsidence induced by ground ice melt can be measured by interferometric synthetic aperture radar (InSAR) techniques to infer active layer thickness (ALT) in permafrost regions. The magnitude of subsidence depends on both how deep the soil thawed and how much ice/water content existed in the active layer soil. To provide the later, P‐band polarimetric synthetic aperture radar (PolSAR) backscatter is used due to its sensitivity to subsurface soil moisture and freeze/thaw conditions. In this study, which is the second in a two‐part series of Permafrost Dynamics Observatory (PDO), we exploit L‐band InSAR subsidence and P‐band PolSAR backscatter in a joint retrieval scheme to simultaneously estimate ALT and soil moisture profile of permafrost active layer. Both subsidence and backscatter are explicitly characterized by physics‐based models and share a common set of soil parameters including porosity and water saturation profiles. The PDO joint retrieval has been applied to the L‐ and P‐band SAR data acquired by National Aeronautics and Space Administration/Jet Propulsion Laboratory's Uninhabited Aerial Vehicle Synthetic Aperture Radar over Alaska and western Canada during the 2017 Arctic‐Boreal Vulnerability Experiment (ABoVE) airborne campaign. This high‐resolution (30 m) regional estimates of ALT and soil moisture profile spanning over the ABoVE study domain can help link the ground‐based field surveys with satellite observations to further understand the permafrost and active layer soil process dynamics to disturbances and climate change occurring across the northern circumpolar region. Article in Journal/Newspaper Active layer thickness Arctic Climate change Ice permafrost Alaska Directory of Open Access Journals: DOAJ Articles Arctic Canada Earth and Space Science 10 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
InSAR PolSAR UAVSAR permafrost active layer thickness soil moisture Astronomy QB1-991 Geology QE1-996.5 |
spellingShingle |
InSAR PolSAR UAVSAR permafrost active layer thickness soil moisture Astronomy QB1-991 Geology QE1-996.5 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 Permafrost Dynamics Observatory (PDO): 2. Joint Retrieval of Permafrost Active Layer Thickness and Soil Moisture From L‐Band InSAR and P‐Band PolSAR |
topic_facet |
InSAR PolSAR UAVSAR permafrost active layer thickness soil moisture Astronomy QB1-991 Geology QE1-996.5 |
description |
Abstract Seasonal subsidence induced by ground ice melt can be measured by interferometric synthetic aperture radar (InSAR) techniques to infer active layer thickness (ALT) in permafrost regions. The magnitude of subsidence depends on both how deep the soil thawed and how much ice/water content existed in the active layer soil. To provide the later, P‐band polarimetric synthetic aperture radar (PolSAR) backscatter is used due to its sensitivity to subsurface soil moisture and freeze/thaw conditions. In this study, which is the second in a two‐part series of Permafrost Dynamics Observatory (PDO), we exploit L‐band InSAR subsidence and P‐band PolSAR backscatter in a joint retrieval scheme to simultaneously estimate ALT and soil moisture profile of permafrost active layer. Both subsidence and backscatter are explicitly characterized by physics‐based models and share a common set of soil parameters including porosity and water saturation profiles. The PDO joint retrieval has been applied to the L‐ and P‐band SAR data acquired by National Aeronautics and Space Administration/Jet Propulsion Laboratory's Uninhabited Aerial Vehicle Synthetic Aperture Radar over Alaska and western Canada during the 2017 Arctic‐Boreal Vulnerability Experiment (ABoVE) airborne campaign. This high‐resolution (30 m) regional estimates of ALT and soil moisture profile spanning over the ABoVE study domain can help link the ground‐based field surveys with satellite observations to further understand the permafrost and active layer soil process dynamics to disturbances and climate change occurring across the northern circumpolar region. |
format |
Article in Journal/Newspaper |
author |
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 |
author_facet |
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 |
author_sort |
Richard H. Chen |
title |
Permafrost Dynamics Observatory (PDO): 2. Joint Retrieval of Permafrost Active Layer Thickness and Soil Moisture From L‐Band InSAR and P‐Band PolSAR |
title_short |
Permafrost Dynamics Observatory (PDO): 2. Joint Retrieval of Permafrost Active Layer Thickness and Soil Moisture From L‐Band InSAR and P‐Band PolSAR |
title_full |
Permafrost Dynamics Observatory (PDO): 2. Joint Retrieval of Permafrost Active Layer Thickness and Soil Moisture From L‐Band InSAR and P‐Band PolSAR |
title_fullStr |
Permafrost Dynamics Observatory (PDO): 2. Joint Retrieval of Permafrost Active Layer Thickness and Soil Moisture From L‐Band InSAR and P‐Band PolSAR |
title_full_unstemmed |
Permafrost Dynamics Observatory (PDO): 2. Joint Retrieval of Permafrost Active Layer Thickness and Soil Moisture From L‐Band InSAR and P‐Band PolSAR |
title_sort |
permafrost dynamics observatory (pdo): 2. joint retrieval of permafrost active layer thickness and soil moisture from l‐band insar and p‐band polsar |
publisher |
American Geophysical Union (AGU) |
publishDate |
2023 |
url |
https://doi.org/10.1029/2022EA002453 https://doaj.org/article/84ebcbc88e44472aa8b7a64ee489144c |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Active layer thickness Arctic Climate change Ice permafrost Alaska |
genre_facet |
Active layer thickness Arctic Climate change Ice permafrost Alaska |
op_source |
Earth and Space Science, Vol 10, Iss 1, Pp n/a-n/a (2023) |
op_relation |
https://doi.org/10.1029/2022EA002453 https://doaj.org/toc/2333-5084 2333-5084 doi:10.1029/2022EA002453 https://doaj.org/article/84ebcbc88e44472aa8b7a64ee489144c |
op_doi |
https://doi.org/10.1029/2022EA002453 |
container_title |
Earth and Space Science |
container_volume |
10 |
container_issue |
1 |
_version_ |
1766324374354264064 |