The Detection and Characterization of Arctic Sea Ice Leads with Satellite Imagers
Sea ice leads (fractures) play a critical role in the exchange of mass and energy between the ocean and atmosphere in the polar regions. The thinning of Arctic sea ice over the last few decades will likely result in changes in lead distributions, so monitoring their characteristics is increasingly i...
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ftmdpi:oai:mdpi.com:/2072-4292/11/5/521/ 2023-08-20T04:03:53+02:00 The Detection and Characterization of Arctic Sea Ice Leads with Satellite Imagers Jay P. Hoffman Steven A. Ackerman Yinghui Liu Jeffrey R. Key agris 2019-03-04 application/pdf https://doi.org/10.3390/rs11050521 EN eng Multidisciplinary Digital Publishing Institute Ocean Remote Sensing https://dx.doi.org/10.3390/rs11050521 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 11; Issue 5; Pages: 521 leads sea ice MODIS Text 2019 ftmdpi https://doi.org/10.3390/rs11050521 2023-07-31T22:05:17Z Sea ice leads (fractures) play a critical role in the exchange of mass and energy between the ocean and atmosphere in the polar regions. The thinning of Arctic sea ice over the last few decades will likely result in changes in lead distributions, so monitoring their characteristics is increasingly important. Here we present a methodology to detect and characterize sea ice leads using satellite imager thermal infrared window channels. A thermal contrast method is first used to identify possible sea ice lead pixels, then a number of geometric and image analysis tests are applied to build a subset of positively identified leads. Finally, characteristics such as width, length and orientation are derived. This methodology is applied to Moderate Resolution Imaging Spectroradiometer (MODIS) observations for the months of January through April over the period of 2003 to 2018. The algorithm results are compared to other satellite estimates of lead distribution. Lead coverage maps and statistics over the Arctic illustrate spatial and temporal lead patterns. Text Arctic Sea ice MDPI Open Access Publishing Arctic Remote Sensing 11 5 521 |
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MDPI Open Access Publishing |
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English |
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leads sea ice MODIS |
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leads sea ice MODIS Jay P. Hoffman Steven A. Ackerman Yinghui Liu Jeffrey R. Key The Detection and Characterization of Arctic Sea Ice Leads with Satellite Imagers |
topic_facet |
leads sea ice MODIS |
description |
Sea ice leads (fractures) play a critical role in the exchange of mass and energy between the ocean and atmosphere in the polar regions. The thinning of Arctic sea ice over the last few decades will likely result in changes in lead distributions, so monitoring their characteristics is increasingly important. Here we present a methodology to detect and characterize sea ice leads using satellite imager thermal infrared window channels. A thermal contrast method is first used to identify possible sea ice lead pixels, then a number of geometric and image analysis tests are applied to build a subset of positively identified leads. Finally, characteristics such as width, length and orientation are derived. This methodology is applied to Moderate Resolution Imaging Spectroradiometer (MODIS) observations for the months of January through April over the period of 2003 to 2018. The algorithm results are compared to other satellite estimates of lead distribution. Lead coverage maps and statistics over the Arctic illustrate spatial and temporal lead patterns. |
format |
Text |
author |
Jay P. Hoffman Steven A. Ackerman Yinghui Liu Jeffrey R. Key |
author_facet |
Jay P. Hoffman Steven A. Ackerman Yinghui Liu Jeffrey R. Key |
author_sort |
Jay P. Hoffman |
title |
The Detection and Characterization of Arctic Sea Ice Leads with Satellite Imagers |
title_short |
The Detection and Characterization of Arctic Sea Ice Leads with Satellite Imagers |
title_full |
The Detection and Characterization of Arctic Sea Ice Leads with Satellite Imagers |
title_fullStr |
The Detection and Characterization of Arctic Sea Ice Leads with Satellite Imagers |
title_full_unstemmed |
The Detection and Characterization of Arctic Sea Ice Leads with Satellite Imagers |
title_sort |
detection and characterization of arctic sea ice leads with satellite imagers |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2019 |
url |
https://doi.org/10.3390/rs11050521 |
op_coverage |
agris |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Remote Sensing; Volume 11; Issue 5; Pages: 521 |
op_relation |
Ocean Remote Sensing https://dx.doi.org/10.3390/rs11050521 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs11050521 |
container_title |
Remote Sensing |
container_volume |
11 |
container_issue |
5 |
container_start_page |
521 |
_version_ |
1774714308315316224 |