Thin-ice dynamics and ice production in the Storfjorden polynya for winter seasons 2002/2003–2013/2014 using MODIS thermal infrared imagery
Spatial and temporal characteristics of the Storfjorden polynya, which forms regularly in the proximity of the islands Spitsbergen, Barentsøya and Edgeøya in the Svalbard archipelago under the influence of strong northeasterly winds, have been investigated for the period of 2002/2003 to 2013/2014 us...
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Language: | English |
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Copernicus Publications
2015
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Online Access: | https://doi.org/10.5194/tc-9-1063-2015 http://www.the-cryosphere.net/9/1063/2015/tc-9-1063-2015.pdf https://doaj.org/article/7ce343db0991400dabeb18d8efca9c02 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:7ce343db0991400dabeb18d8efca9c02 2023-05-15T15:39:20+02:00 Thin-ice dynamics and ice production in the Storfjorden polynya for winter seasons 2002/2003–2013/2014 using MODIS thermal infrared imagery A. Preußer S. Willmes G. Heinemann S. Paul 2015-05-01 https://doi.org/10.5194/tc-9-1063-2015 http://www.the-cryosphere.net/9/1063/2015/tc-9-1063-2015.pdf https://doaj.org/article/7ce343db0991400dabeb18d8efca9c02 en eng Copernicus Publications 1994-0416 1994-0424 doi:10.5194/tc-9-1063-2015 http://www.the-cryosphere.net/9/1063/2015/tc-9-1063-2015.pdf https://doaj.org/article/7ce343db0991400dabeb18d8efca9c02 undefined The Cryosphere, Vol 9, Iss 3, Pp 1063-1073 (2015) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2015 fttriple https://doi.org/10.5194/tc-9-1063-2015 2023-01-22T18:11:39Z Spatial and temporal characteristics of the Storfjorden polynya, which forms regularly in the proximity of the islands Spitsbergen, Barentsøya and Edgeøya in the Svalbard archipelago under the influence of strong northeasterly winds, have been investigated for the period of 2002/2003 to 2013/2014 using thermal infrared satellite imagery. Thin-ice thicknesses were calculated from MODIS ice-surface temperatures combined with ECMWF ERA-Interim atmospheric reanalysis data in an energy-balance model. Associated quantities like polynya area and total ice production were derived and compared to previous remote sensing and modeling studies. A basic coverage-correction scheme was applied to account for cloud gaps in the daily composites. On average, both polynya area and ice production are thereby increased by about 30%. The sea ice in the Storfjorden area experiences a late fall freeze-up in several years over the 12-winter period, which becomes most apparent through an increasing frequency of large thin-ice areas until the end of December. In the course of an average winter season, ice thicknesses below 10 cm are dominating within the Storfjorden basin. During the regarded period, the mean polynya area is 4555.7 ± 1542.9 km2. Maximum daily ice production rates can reach as high as 26 cm d−1, while the average ice production is estimated at 28.3 ± 8.5 km3 per winter and therefore lower than in previous studies. Despite this comparatively short record of 12 winter seasons, a significant positive trend of 20.2 km3 per decade could be detected, which originates primarily from a delayed freeze-up in November and December in recent winter seasons. This contrasts earlier reports of a slightly negative trend in accumulated ice production prior to 2002. Although featuring more pronounced interannual variations between 2004/2005 and 2011/2012, our estimates underline the importance of this relatively small coastal polynya system considering its contribution to the cold halocline layer through salt release during ice-formation ... Article in Journal/Newspaper Barentsøya Edgeøya Sea ice Storfjorden Svalbard The Cryosphere Spitsbergen Unknown Barentsøya ENVELOPE(21.250,21.250,78.450,78.450) Edgeøya ENVELOPE(22.500,22.500,77.750,77.750) Svalbard Svalbard Archipelago The Cryosphere 9 3 1063 1073 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir A. Preußer S. Willmes G. Heinemann S. Paul Thin-ice dynamics and ice production in the Storfjorden polynya for winter seasons 2002/2003–2013/2014 using MODIS thermal infrared imagery |
topic_facet |
geo envir |
description |
Spatial and temporal characteristics of the Storfjorden polynya, which forms regularly in the proximity of the islands Spitsbergen, Barentsøya and Edgeøya in the Svalbard archipelago under the influence of strong northeasterly winds, have been investigated for the period of 2002/2003 to 2013/2014 using thermal infrared satellite imagery. Thin-ice thicknesses were calculated from MODIS ice-surface temperatures combined with ECMWF ERA-Interim atmospheric reanalysis data in an energy-balance model. Associated quantities like polynya area and total ice production were derived and compared to previous remote sensing and modeling studies. A basic coverage-correction scheme was applied to account for cloud gaps in the daily composites. On average, both polynya area and ice production are thereby increased by about 30%. The sea ice in the Storfjorden area experiences a late fall freeze-up in several years over the 12-winter period, which becomes most apparent through an increasing frequency of large thin-ice areas until the end of December. In the course of an average winter season, ice thicknesses below 10 cm are dominating within the Storfjorden basin. During the regarded period, the mean polynya area is 4555.7 ± 1542.9 km2. Maximum daily ice production rates can reach as high as 26 cm d−1, while the average ice production is estimated at 28.3 ± 8.5 km3 per winter and therefore lower than in previous studies. Despite this comparatively short record of 12 winter seasons, a significant positive trend of 20.2 km3 per decade could be detected, which originates primarily from a delayed freeze-up in November and December in recent winter seasons. This contrasts earlier reports of a slightly negative trend in accumulated ice production prior to 2002. Although featuring more pronounced interannual variations between 2004/2005 and 2011/2012, our estimates underline the importance of this relatively small coastal polynya system considering its contribution to the cold halocline layer through salt release during ice-formation ... |
format |
Article in Journal/Newspaper |
author |
A. Preußer S. Willmes G. Heinemann S. Paul |
author_facet |
A. Preußer S. Willmes G. Heinemann S. Paul |
author_sort |
A. Preußer |
title |
Thin-ice dynamics and ice production in the Storfjorden polynya for winter seasons 2002/2003–2013/2014 using MODIS thermal infrared imagery |
title_short |
Thin-ice dynamics and ice production in the Storfjorden polynya for winter seasons 2002/2003–2013/2014 using MODIS thermal infrared imagery |
title_full |
Thin-ice dynamics and ice production in the Storfjorden polynya for winter seasons 2002/2003–2013/2014 using MODIS thermal infrared imagery |
title_fullStr |
Thin-ice dynamics and ice production in the Storfjorden polynya for winter seasons 2002/2003–2013/2014 using MODIS thermal infrared imagery |
title_full_unstemmed |
Thin-ice dynamics and ice production in the Storfjorden polynya for winter seasons 2002/2003–2013/2014 using MODIS thermal infrared imagery |
title_sort |
thin-ice dynamics and ice production in the storfjorden polynya for winter seasons 2002/2003–2013/2014 using modis thermal infrared imagery |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/tc-9-1063-2015 http://www.the-cryosphere.net/9/1063/2015/tc-9-1063-2015.pdf https://doaj.org/article/7ce343db0991400dabeb18d8efca9c02 |
long_lat |
ENVELOPE(21.250,21.250,78.450,78.450) ENVELOPE(22.500,22.500,77.750,77.750) |
geographic |
Barentsøya Edgeøya Svalbard Svalbard Archipelago |
geographic_facet |
Barentsøya Edgeøya Svalbard Svalbard Archipelago |
genre |
Barentsøya Edgeøya Sea ice Storfjorden Svalbard The Cryosphere Spitsbergen |
genre_facet |
Barentsøya Edgeøya Sea ice Storfjorden Svalbard The Cryosphere Spitsbergen |
op_source |
The Cryosphere, Vol 9, Iss 3, Pp 1063-1073 (2015) |
op_relation |
1994-0416 1994-0424 doi:10.5194/tc-9-1063-2015 http://www.the-cryosphere.net/9/1063/2015/tc-9-1063-2015.pdf https://doaj.org/article/7ce343db0991400dabeb18d8efca9c02 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-9-1063-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
3 |
container_start_page |
1063 |
op_container_end_page |
1073 |
_version_ |
1766371026354044928 |