Estimation of Arctic land-fast ice cover based on dual-polarized Sentinel-1 SAR imagery
Here a method for estimating the land-fast ice (LFI) extent from dual-polarized Sentinel-1 SAR mosaics of an Arctic study area over the Kara and Barents seas is presented. The method is based on temporal cross-correlation between adjacent daily SAR mosaics. The results are compared to the LFI of the...
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ftcopernicus:oai:publications.copernicus.org:tc63581 2023-05-15T13:55:28+02:00 Estimation of Arctic land-fast ice cover based on dual-polarized Sentinel-1 SAR imagery Karvonen, Juha 2019-01-04 application/pdf https://doi.org/10.5194/tc-12-2595-2018 https://tc.copernicus.org/articles/12/2595/2018/ eng eng doi:10.5194/tc-12-2595-2018 https://tc.copernicus.org/articles/12/2595/2018/ eISSN: 1994-0424 Text 2019 ftcopernicus https://doi.org/10.5194/tc-12-2595-2018 2020-07-20T16:23:09Z Here a method for estimating the land-fast ice (LFI) extent from dual-polarized Sentinel-1 SAR mosaics of an Arctic study area over the Kara and Barents seas is presented. The method is based on temporal cross-correlation between adjacent daily SAR mosaics. The results are compared to the LFI of the Russian Arctic and Antarctic Research Institute (AARI) ice charts. Two versions of the method were studied: in the first version (FMI-A) the overall performance was optimized, and in the second version (FMI-B) the target was a low LFI misdetection rate. FMI-A detected over 73 % of the AARI ice chart LFI, and FMI-B a little over 50 % of the AARI ice chart LFI. During the winter months the detection rates were higher than during the melt-down season for both the studied algorithm versions. An LFI time series covering the time period from October 2015 to the end of August 2017 computed using the proposed methodology is provided on the FMI ftp server. The time series will be extended twice annually. Text Antarc* Antarctic Arctic and Antarctic Research Institute Arctic Copernicus Publications: E-Journals Antarctic Arctic The Cryosphere 12 8 2595 2607 |
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Open Polar |
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Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Here a method for estimating the land-fast ice (LFI) extent from dual-polarized Sentinel-1 SAR mosaics of an Arctic study area over the Kara and Barents seas is presented. The method is based on temporal cross-correlation between adjacent daily SAR mosaics. The results are compared to the LFI of the Russian Arctic and Antarctic Research Institute (AARI) ice charts. Two versions of the method were studied: in the first version (FMI-A) the overall performance was optimized, and in the second version (FMI-B) the target was a low LFI misdetection rate. FMI-A detected over 73 % of the AARI ice chart LFI, and FMI-B a little over 50 % of the AARI ice chart LFI. During the winter months the detection rates were higher than during the melt-down season for both the studied algorithm versions. An LFI time series covering the time period from October 2015 to the end of August 2017 computed using the proposed methodology is provided on the FMI ftp server. The time series will be extended twice annually. |
format |
Text |
author |
Karvonen, Juha |
spellingShingle |
Karvonen, Juha Estimation of Arctic land-fast ice cover based on dual-polarized Sentinel-1 SAR imagery |
author_facet |
Karvonen, Juha |
author_sort |
Karvonen, Juha |
title |
Estimation of Arctic land-fast ice cover based on dual-polarized Sentinel-1 SAR imagery |
title_short |
Estimation of Arctic land-fast ice cover based on dual-polarized Sentinel-1 SAR imagery |
title_full |
Estimation of Arctic land-fast ice cover based on dual-polarized Sentinel-1 SAR imagery |
title_fullStr |
Estimation of Arctic land-fast ice cover based on dual-polarized Sentinel-1 SAR imagery |
title_full_unstemmed |
Estimation of Arctic land-fast ice cover based on dual-polarized Sentinel-1 SAR imagery |
title_sort |
estimation of arctic land-fast ice cover based on dual-polarized sentinel-1 sar imagery |
publishDate |
2019 |
url |
https://doi.org/10.5194/tc-12-2595-2018 https://tc.copernicus.org/articles/12/2595/2018/ |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Arctic and Antarctic Research Institute Arctic |
genre_facet |
Antarc* Antarctic Arctic and Antarctic Research Institute Arctic |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-12-2595-2018 https://tc.copernicus.org/articles/12/2595/2018/ |
op_doi |
https://doi.org/10.5194/tc-12-2595-2018 |
container_title |
The Cryosphere |
container_volume |
12 |
container_issue |
8 |
container_start_page |
2595 |
op_container_end_page |
2607 |
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1766262127561015296 |