Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images
In this paper we introduce a parameter for the retrieval of the thickness of undeformed first-year sea ice that is specifically adapted to compact polarimetric (CP) synthetic aperture radar (SAR) images. The parameter is denoted as the “CP ratio”. In model simulations we investigated the sensitivity...
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ftawi:oai:epic.awi.de:41295 2023-05-15T17:06:10+02:00 Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images Zhang, Xi Dierking, Wolfgang Zhang, Jie Meng, Junmin Lang, Haltao 2016-07-19 application/pdf https://epic.awi.de/id/eprint/41295/ https://epic.awi.de/id/eprint/41295/1/tc-10-1529-2016.pdf https://hdl.handle.net/10013/epic.48217 https://hdl.handle.net/10013/epic.48217.d001 unknown Copernicus Publications https://epic.awi.de/id/eprint/41295/1/tc-10-1529-2016.pdf https://hdl.handle.net/10013/epic.48217.d001 Zhang, X. , Dierking, W. orcid:0000-0002-5031-648X , Zhang, J. , Meng, J. and Lang, H. (2016) Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images , The Cryosphere, 10 , pp. 1529-1545 . doi:10.5194/tc-10-1529-2016 <https://doi.org/10.5194/tc-10-1529-2016> , hdl:10013/epic.48217 EPIC3The Cryosphere, Copernicus Publications, 10, pp. 1529-1545 Article isiRev 2016 ftawi https://doi.org/10.5194/tc-10-1529-2016 2021-12-24T15:41:43Z In this paper we introduce a parameter for the retrieval of the thickness of undeformed first-year sea ice that is specifically adapted to compact polarimetric (CP) synthetic aperture radar (SAR) images. The parameter is denoted as the “CP ratio”. In model simulations we investigated the sensitivity of the CP ratio to the dielectric constant, ice thickness, ice surface roughness, and radar incidence angle. From the results of the simulations we deduced optimal sea ice conditions and radar incidence angles for the ice thickness retrieval. C-band SAR data acquired over the Labrador Sea in circular transmit and linear receive (CTLR) mode were generated from RADARSAT-2 quad-polarization images. In comparison with results from helicopter-borne measurements, we tested different empirical equations for the retrieval of ice thickness. An exponential fit between the CP ratio and ice thickness provides the most reliable results. Based on a validation using other compact polarimetric SAR images from the same region, we found a root mean square (rms) error of 8 cm and a maximum correlation coefficient of 0.94 for the retrieval procedure when applying it to level ice between 0.1 and 0.8m thick. Article in Journal/Newspaper Labrador Sea Sea ice The Cryosphere Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) The Cryosphere 10 4 1529 1545 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
In this paper we introduce a parameter for the retrieval of the thickness of undeformed first-year sea ice that is specifically adapted to compact polarimetric (CP) synthetic aperture radar (SAR) images. The parameter is denoted as the “CP ratio”. In model simulations we investigated the sensitivity of the CP ratio to the dielectric constant, ice thickness, ice surface roughness, and radar incidence angle. From the results of the simulations we deduced optimal sea ice conditions and radar incidence angles for the ice thickness retrieval. C-band SAR data acquired over the Labrador Sea in circular transmit and linear receive (CTLR) mode were generated from RADARSAT-2 quad-polarization images. In comparison with results from helicopter-borne measurements, we tested different empirical equations for the retrieval of ice thickness. An exponential fit between the CP ratio and ice thickness provides the most reliable results. Based on a validation using other compact polarimetric SAR images from the same region, we found a root mean square (rms) error of 8 cm and a maximum correlation coefficient of 0.94 for the retrieval procedure when applying it to level ice between 0.1 and 0.8m thick. |
format |
Article in Journal/Newspaper |
author |
Zhang, Xi Dierking, Wolfgang Zhang, Jie Meng, Junmin Lang, Haltao |
spellingShingle |
Zhang, Xi Dierking, Wolfgang Zhang, Jie Meng, Junmin Lang, Haltao Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images |
author_facet |
Zhang, Xi Dierking, Wolfgang Zhang, Jie Meng, Junmin Lang, Haltao |
author_sort |
Zhang, Xi |
title |
Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images |
title_short |
Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images |
title_full |
Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images |
title_fullStr |
Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images |
title_full_unstemmed |
Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images |
title_sort |
retrieval of the thickness of undeformed sea ice from simulated c-band compact polarimetric sar images |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/41295/ https://epic.awi.de/id/eprint/41295/1/tc-10-1529-2016.pdf https://hdl.handle.net/10013/epic.48217 https://hdl.handle.net/10013/epic.48217.d001 |
genre |
Labrador Sea Sea ice The Cryosphere |
genre_facet |
Labrador Sea Sea ice The Cryosphere |
op_source |
EPIC3The Cryosphere, Copernicus Publications, 10, pp. 1529-1545 |
op_relation |
https://epic.awi.de/id/eprint/41295/1/tc-10-1529-2016.pdf https://hdl.handle.net/10013/epic.48217.d001 Zhang, X. , Dierking, W. orcid:0000-0002-5031-648X , Zhang, J. , Meng, J. and Lang, H. (2016) Retrieval of the thickness of undeformed sea ice from simulated C-band compact polarimetric SAR images , The Cryosphere, 10 , pp. 1529-1545 . doi:10.5194/tc-10-1529-2016 <https://doi.org/10.5194/tc-10-1529-2016> , hdl:10013/epic.48217 |
op_doi |
https://doi.org/10.5194/tc-10-1529-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
4 |
container_start_page |
1529 |
op_container_end_page |
1545 |
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1766061171292504064 |