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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ftdoajarticles:oai:doaj.org/article:928cdae533e0439ab402af141352ee4f 2023-05-15T14:49:32+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 2019-03-01T00:00:00Z https://doi.org/10.3390/rs11050521 https://doaj.org/article/928cdae533e0439ab402af141352ee4f EN eng MDPI AG http://www.mdpi.com/2072-4292/11/5/521 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs11050521 https://doaj.org/article/928cdae533e0439ab402af141352ee4f Remote Sensing, Vol 11, Iss 5, p 521 (2019) leads sea ice MODIS Science Q article 2019 ftdoajarticles https://doi.org/10.3390/rs11050521 2022-12-31T15:20:02Z 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. Article in Journal/Newspaper Arctic Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Remote Sensing 11 5 521 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
leads sea ice MODIS Science Q |
spellingShingle |
leads sea ice MODIS Science Q 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 Science Q |
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 |
Article in Journal/Newspaper |
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 |
MDPI AG |
publishDate |
2019 |
url |
https://doi.org/10.3390/rs11050521 https://doaj.org/article/928cdae533e0439ab402af141352ee4f |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Remote Sensing, Vol 11, Iss 5, p 521 (2019) |
op_relation |
http://www.mdpi.com/2072-4292/11/5/521 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs11050521 https://doaj.org/article/928cdae533e0439ab402af141352ee4f |
op_doi |
https://doi.org/10.3390/rs11050521 |
container_title |
Remote Sensing |
container_volume |
11 |
container_issue |
5 |
container_start_page |
521 |
_version_ |
1766320577262387200 |