Sea-Ice Wintertime Lead Frequencies and Regional Characteristics in the Arctic, 2003–2015
The presence of sea-ice leads represents a key feature of the Arctic sea ice cover. Leads promote the flux of sensible and latent heat from the ocean to the cold winter atmosphere and are thereby crucial for air-sea-ice-ocean interactions. We here apply a binary segmentation procedure to identify le...
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Online Access: | https://oceanrep.geomar.de/id/eprint/31758/ https://oceanrep.geomar.de/id/eprint/31758/1/remotesensing-08-00004.pdf https://doi.org/10.3390/rs8010004 |
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ftoceanrep:oai:oceanrep.geomar.de:31758 2023-05-15T14:25:16+02:00 Sea-Ice Wintertime Lead Frequencies and Regional Characteristics in the Arctic, 2003–2015 Willmes, Sascha Heinemann, Günther 2016 text https://oceanrep.geomar.de/id/eprint/31758/ https://oceanrep.geomar.de/id/eprint/31758/1/remotesensing-08-00004.pdf https://doi.org/10.3390/rs8010004 en eng MDPI https://oceanrep.geomar.de/id/eprint/31758/1/remotesensing-08-00004.pdf Willmes, S. and Heinemann, G. (2016) Sea-Ice Wintertime Lead Frequencies and Regional Characteristics in the Arctic, 2003–2015. Open Access Remote Sensing, 8 (1). p. 4. DOI 10.3390/rs8010004 <https://doi.org/10.3390/rs8010004>. doi:10.3390/rs8010004 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2016 ftoceanrep https://doi.org/10.3390/rs8010004 2023-04-07T15:24:10Z The presence of sea-ice leads represents a key feature of the Arctic sea ice cover. Leads promote the flux of sensible and latent heat from the ocean to the cold winter atmosphere and are thereby crucial for air-sea-ice-ocean interactions. We here apply a binary segmentation procedure to identify leads from MODIS thermal infrared imagery on a daily time scale. The method separates identified leads into two uncertainty categories, with the high uncertainty being attributed to artifacts that arise from warm signatures of unrecognized clouds. Based on the obtained lead detections, we compute quasi-daily pan-Arctic lead maps for the months of January to April, 2003–2015. Our results highlight the marginal ice zone in the Fram Strait and Barents Sea as the primary region for lead activity. The spatial distribution of the average pan-Arctic lead frequencies reveals, moreover, distinct patterns of predominant fracture zones in the Beaufort Sea and along the shelf-breaks, mainly in the Siberian sector of the Arctic Ocean as well as the well-known polynya and fast-ice locations. Additionally, a substantial inter-annual variability of lead occurrences in the Arctic is indicated. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Barents Sea Beaufort Sea Fram Strait Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Arctic Ocean Barents Sea Remote Sensing 8 1 4 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
The presence of sea-ice leads represents a key feature of the Arctic sea ice cover. Leads promote the flux of sensible and latent heat from the ocean to the cold winter atmosphere and are thereby crucial for air-sea-ice-ocean interactions. We here apply a binary segmentation procedure to identify leads from MODIS thermal infrared imagery on a daily time scale. The method separates identified leads into two uncertainty categories, with the high uncertainty being attributed to artifacts that arise from warm signatures of unrecognized clouds. Based on the obtained lead detections, we compute quasi-daily pan-Arctic lead maps for the months of January to April, 2003–2015. Our results highlight the marginal ice zone in the Fram Strait and Barents Sea as the primary region for lead activity. The spatial distribution of the average pan-Arctic lead frequencies reveals, moreover, distinct patterns of predominant fracture zones in the Beaufort Sea and along the shelf-breaks, mainly in the Siberian sector of the Arctic Ocean as well as the well-known polynya and fast-ice locations. Additionally, a substantial inter-annual variability of lead occurrences in the Arctic is indicated. |
format |
Article in Journal/Newspaper |
author |
Willmes, Sascha Heinemann, Günther |
spellingShingle |
Willmes, Sascha Heinemann, Günther Sea-Ice Wintertime Lead Frequencies and Regional Characteristics in the Arctic, 2003–2015 |
author_facet |
Willmes, Sascha Heinemann, Günther |
author_sort |
Willmes, Sascha |
title |
Sea-Ice Wintertime Lead Frequencies and Regional Characteristics in the Arctic, 2003–2015 |
title_short |
Sea-Ice Wintertime Lead Frequencies and Regional Characteristics in the Arctic, 2003–2015 |
title_full |
Sea-Ice Wintertime Lead Frequencies and Regional Characteristics in the Arctic, 2003–2015 |
title_fullStr |
Sea-Ice Wintertime Lead Frequencies and Regional Characteristics in the Arctic, 2003–2015 |
title_full_unstemmed |
Sea-Ice Wintertime Lead Frequencies and Regional Characteristics in the Arctic, 2003–2015 |
title_sort |
sea-ice wintertime lead frequencies and regional characteristics in the arctic, 2003–2015 |
publisher |
MDPI |
publishDate |
2016 |
url |
https://oceanrep.geomar.de/id/eprint/31758/ https://oceanrep.geomar.de/id/eprint/31758/1/remotesensing-08-00004.pdf https://doi.org/10.3390/rs8010004 |
geographic |
Arctic Arctic Ocean Barents Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea |
genre |
Arctic Arctic Arctic Ocean Barents Sea Beaufort Sea Fram Strait Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Barents Sea Beaufort Sea Fram Strait Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/31758/1/remotesensing-08-00004.pdf Willmes, S. and Heinemann, G. (2016) Sea-Ice Wintertime Lead Frequencies and Regional Characteristics in the Arctic, 2003–2015. Open Access Remote Sensing, 8 (1). p. 4. DOI 10.3390/rs8010004 <https://doi.org/10.3390/rs8010004>. doi:10.3390/rs8010004 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3390/rs8010004 |
container_title |
Remote Sensing |
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8 |
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1 |
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4 |
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1766297698231648256 |