Circumpolar polynya regions and ice production in the Arctic: results from MODIS thermal infrared imagery from 2002/2003 to 2014/2015 with a regional focus on the Laptev Sea
High-resolution MODIS thermal infrared satellite data are used to infer spatial and temporal characteristics of 17 prominent coastal polynya regions over the entire Arctic basin. Thin-ice thickness (TIT) distributions (≤ 20 cm) are calculated from MODIS ice-surface temperatures, combined with ECMWF...
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2016
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00011051 2023-05-15T14:29:02+02:00 Circumpolar polynya regions and ice production in the Arctic: results from MODIS thermal infrared imagery from 2002/2003 to 2014/2015 with a regional focus on the Laptev Sea Preußer, Andreas Heinemann, Günther Willmes, Sascha Paul, Stephan 2016-12 electronic https://doi.org/10.5194/tc-10-3021-2016 https://noa.gwlb.de/receive/cop_mods_00011051 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011008/tc-10-3021-2016.pdf https://tc.copernicus.org/articles/10/3021/2016/tc-10-3021-2016.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-10-3021-2016 https://noa.gwlb.de/receive/cop_mods_00011051 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011008/tc-10-3021-2016.pdf https://tc.copernicus.org/articles/10/3021/2016/tc-10-3021-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/tc-10-3021-2016 2022-02-08T22:56:43Z High-resolution MODIS thermal infrared satellite data are used to infer spatial and temporal characteristics of 17 prominent coastal polynya regions over the entire Arctic basin. Thin-ice thickness (TIT) distributions (≤ 20 cm) are calculated from MODIS ice-surface temperatures, combined with ECMWF ERA-Interim atmospheric reanalysis data in an energy balance model for 13 winter seasons (2002/2003 to 2014/2015; November to March). From all available MODIS swath data, daily thin-ice thickness composites are computed in order to derive quantities such as polynya area and total thermodynamic (i.e., potential) ice production. A gap-filling approach is applied to account for cloud and data gaps in the MODIS composites. All polynya regions combined cover an average thin-ice area of 226.6 ± 36.1 × 103 km2 in winter. This allows for an average total winter-accumulated ice production of about 1811 ± 293 km3, whereby the Kara Sea region, the North Water polynya (both 15 %), polynyas on the western side of Novaya Zemlya (20 %), as well as scattered smaller polynyas in the Canadian Arctic Archipelago (all combined 12 %) are the main contributors. Other well-known sites of polynya formation (Laptev Sea, Chukchi Sea) show smaller contributions and range between 2 and 5 %. We notice distinct differences to earlier studies on pan-Arctic polynya characteristics, originating in some part from the use of high-resolution MODIS data, as the capability to resolve small-scale (> 2 km) polynyas and also large leads are increased. Despite the short record of 13 winter seasons, positive trends in ice production are detected for several regions of the eastern Arctic (most significantly in the Laptev Sea region with an increase of 6.8 km3 yr−1) and the North Water polynya, while other polynyas in the western Arctic show a more pronounced variability with varying trends. We emphasize the role of the Laptev Sea polynyas as being a major influence on Transpolar Drift characteristics through a distinct relation between increasing ice production and ice area export. Overall, our study presents a spatially highly accurate characterization of circumpolar polynya dynamics and ice production, which should be valuable for future modeling efforts of atmosphere–ice–ocean interactions in the Arctic. Article in Journal/Newspaper Arctic Archipelago Arctic Basin Arctic Canadian Arctic Archipelago Chukchi Chukchi Sea Kara Sea laptev Laptev Sea Novaya Zemlya The Cryosphere Niedersächsisches Online-Archiv NOA Arctic Canadian Arctic Archipelago Chukchi Sea Kara Sea Laptev Sea The Cryosphere 10 6 3021 3042 |
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article Verlagsveröffentlichung Preußer, Andreas Heinemann, Günther Willmes, Sascha Paul, Stephan Circumpolar polynya regions and ice production in the Arctic: results from MODIS thermal infrared imagery from 2002/2003 to 2014/2015 with a regional focus on the Laptev Sea |
topic_facet |
article Verlagsveröffentlichung |
description |
High-resolution MODIS thermal infrared satellite data are used to infer spatial and temporal characteristics of 17 prominent coastal polynya regions over the entire Arctic basin. Thin-ice thickness (TIT) distributions (≤ 20 cm) are calculated from MODIS ice-surface temperatures, combined with ECMWF ERA-Interim atmospheric reanalysis data in an energy balance model for 13 winter seasons (2002/2003 to 2014/2015; November to March). From all available MODIS swath data, daily thin-ice thickness composites are computed in order to derive quantities such as polynya area and total thermodynamic (i.e., potential) ice production. A gap-filling approach is applied to account for cloud and data gaps in the MODIS composites. All polynya regions combined cover an average thin-ice area of 226.6 ± 36.1 × 103 km2 in winter. This allows for an average total winter-accumulated ice production of about 1811 ± 293 km3, whereby the Kara Sea region, the North Water polynya (both 15 %), polynyas on the western side of Novaya Zemlya (20 %), as well as scattered smaller polynyas in the Canadian Arctic Archipelago (all combined 12 %) are the main contributors. Other well-known sites of polynya formation (Laptev Sea, Chukchi Sea) show smaller contributions and range between 2 and 5 %. We notice distinct differences to earlier studies on pan-Arctic polynya characteristics, originating in some part from the use of high-resolution MODIS data, as the capability to resolve small-scale (> 2 km) polynyas and also large leads are increased. Despite the short record of 13 winter seasons, positive trends in ice production are detected for several regions of the eastern Arctic (most significantly in the Laptev Sea region with an increase of 6.8 km3 yr−1) and the North Water polynya, while other polynyas in the western Arctic show a more pronounced variability with varying trends. We emphasize the role of the Laptev Sea polynyas as being a major influence on Transpolar Drift characteristics through a distinct relation between increasing ice production and ice area export. Overall, our study presents a spatially highly accurate characterization of circumpolar polynya dynamics and ice production, which should be valuable for future modeling efforts of atmosphere–ice–ocean interactions in the Arctic. |
format |
Article in Journal/Newspaper |
author |
Preußer, Andreas Heinemann, Günther Willmes, Sascha Paul, Stephan |
author_facet |
Preußer, Andreas Heinemann, Günther Willmes, Sascha Paul, Stephan |
author_sort |
Preußer, Andreas |
title |
Circumpolar polynya regions and ice production in the Arctic: results from MODIS thermal infrared imagery from 2002/2003 to 2014/2015 with a regional focus on the Laptev Sea |
title_short |
Circumpolar polynya regions and ice production in the Arctic: results from MODIS thermal infrared imagery from 2002/2003 to 2014/2015 with a regional focus on the Laptev Sea |
title_full |
Circumpolar polynya regions and ice production in the Arctic: results from MODIS thermal infrared imagery from 2002/2003 to 2014/2015 with a regional focus on the Laptev Sea |
title_fullStr |
Circumpolar polynya regions and ice production in the Arctic: results from MODIS thermal infrared imagery from 2002/2003 to 2014/2015 with a regional focus on the Laptev Sea |
title_full_unstemmed |
Circumpolar polynya regions and ice production in the Arctic: results from MODIS thermal infrared imagery from 2002/2003 to 2014/2015 with a regional focus on the Laptev Sea |
title_sort |
circumpolar polynya regions and ice production in the arctic: results from modis thermal infrared imagery from 2002/2003 to 2014/2015 with a regional focus on the laptev sea |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-3021-2016 https://noa.gwlb.de/receive/cop_mods_00011051 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011008/tc-10-3021-2016.pdf https://tc.copernicus.org/articles/10/3021/2016/tc-10-3021-2016.pdf |
geographic |
Arctic Canadian Arctic Archipelago Chukchi Sea Kara Sea Laptev Sea |
geographic_facet |
Arctic Canadian Arctic Archipelago Chukchi Sea Kara Sea Laptev Sea |
genre |
Arctic Archipelago Arctic Basin Arctic Canadian Arctic Archipelago Chukchi Chukchi Sea Kara Sea laptev Laptev Sea Novaya Zemlya The Cryosphere |
genre_facet |
Arctic Archipelago Arctic Basin Arctic Canadian Arctic Archipelago Chukchi Chukchi Sea Kara Sea laptev Laptev Sea Novaya Zemlya The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-10-3021-2016 https://noa.gwlb.de/receive/cop_mods_00011051 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011008/tc-10-3021-2016.pdf https://tc.copernicus.org/articles/10/3021/2016/tc-10-3021-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-10-3021-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
6 |
container_start_page |
3021 |
op_container_end_page |
3042 |
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1766303136752861184 |