Seasonal Evolution of the Sea Ice Floe Size Distribution from Two Decades of MODIS Data
The Arctic sea ice cover seasonally evolves from large plates separated by long, linear leads in the winter to a mosaic of smaller sea ice floes in the summer. The interplay between physical and thermodynamic mechanisms during this process ultimately sets the observed sea ice floe size distribution...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00071155 2024-02-11T10:01:20+01:00 Seasonal Evolution of the Sea Ice Floe Size Distribution from Two Decades of MODIS Data Buckley, Ellen Margaret Cañuelas, Leela Timmermans, Mary-Louise Wilhelmus, Monica Martinez 2024-01 electronic https://doi.org/10.5194/egusphere-2024-89 https://noa.gwlb.de/receive/cop_mods_00071155 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069456/egusphere-2024-89.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-89/egusphere-2024-89.pdf eng eng Copernicus Publications https://doi.org/10.5194/egusphere-2024-89 https://noa.gwlb.de/receive/cop_mods_00071155 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069456/egusphere-2024-89.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-89/egusphere-2024-89.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/egusphere-2024-89 2024-01-22T00:22:44Z The Arctic sea ice cover seasonally evolves from large plates separated by long, linear leads in the winter to a mosaic of smaller sea ice floes in the summer. The interplay between physical and thermodynamic mechanisms during this process ultimately sets the observed sea ice floe size distribution (FSD), an important metric for characterizing the sea ice cover and assessing model performance. Historically, FSDs have been studied at fixed locations over short periods, leaving a gap in our understanding of the spatial and temporal evolution of the FSD at large scales. Here, we present a new framework for image segmentation, allowing the identification and labeling of individual ice floes in Moderate Resolution Imaging Spectroradiometer (MODIS) data. Using this algorithm, we automatically process and segment 4,861 images, identifying more than 9.4 million floes over 23 years. The extracted characteristics of the floes–including area, perimeter, and orientation–evolve throughout the spring and summer in the Beaufort Sea. We find seasonal patterns of decreasing mean floe area, increasing FSD power law slope, and more variability in the floe orientation as the summer progresses. Article in Journal/Newspaper Arctic Beaufort Sea Sea ice Niedersächsisches Online-Archiv NOA Arctic |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Buckley, Ellen Margaret Cañuelas, Leela Timmermans, Mary-Louise Wilhelmus, Monica Martinez Seasonal Evolution of the Sea Ice Floe Size Distribution from Two Decades of MODIS Data |
topic_facet |
article Verlagsveröffentlichung |
description |
The Arctic sea ice cover seasonally evolves from large plates separated by long, linear leads in the winter to a mosaic of smaller sea ice floes in the summer. The interplay between physical and thermodynamic mechanisms during this process ultimately sets the observed sea ice floe size distribution (FSD), an important metric for characterizing the sea ice cover and assessing model performance. Historically, FSDs have been studied at fixed locations over short periods, leaving a gap in our understanding of the spatial and temporal evolution of the FSD at large scales. Here, we present a new framework for image segmentation, allowing the identification and labeling of individual ice floes in Moderate Resolution Imaging Spectroradiometer (MODIS) data. Using this algorithm, we automatically process and segment 4,861 images, identifying more than 9.4 million floes over 23 years. The extracted characteristics of the floes–including area, perimeter, and orientation–evolve throughout the spring and summer in the Beaufort Sea. We find seasonal patterns of decreasing mean floe area, increasing FSD power law slope, and more variability in the floe orientation as the summer progresses. |
format |
Article in Journal/Newspaper |
author |
Buckley, Ellen Margaret Cañuelas, Leela Timmermans, Mary-Louise Wilhelmus, Monica Martinez |
author_facet |
Buckley, Ellen Margaret Cañuelas, Leela Timmermans, Mary-Louise Wilhelmus, Monica Martinez |
author_sort |
Buckley, Ellen Margaret |
title |
Seasonal Evolution of the Sea Ice Floe Size Distribution from Two Decades of MODIS Data |
title_short |
Seasonal Evolution of the Sea Ice Floe Size Distribution from Two Decades of MODIS Data |
title_full |
Seasonal Evolution of the Sea Ice Floe Size Distribution from Two Decades of MODIS Data |
title_fullStr |
Seasonal Evolution of the Sea Ice Floe Size Distribution from Two Decades of MODIS Data |
title_full_unstemmed |
Seasonal Evolution of the Sea Ice Floe Size Distribution from Two Decades of MODIS Data |
title_sort |
seasonal evolution of the sea ice floe size distribution from two decades of modis data |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/egusphere-2024-89 https://noa.gwlb.de/receive/cop_mods_00071155 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069456/egusphere-2024-89.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-89/egusphere-2024-89.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Beaufort Sea Sea ice |
genre_facet |
Arctic Beaufort Sea Sea ice |
op_relation |
https://doi.org/10.5194/egusphere-2024-89 https://noa.gwlb.de/receive/cop_mods_00071155 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069456/egusphere-2024-89.pdf https://egusphere.copernicus.org/preprints/2024/egusphere-2024-89/egusphere-2024-89.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/egusphere-2024-89 |
_version_ |
1790597144286068736 |