MOSAiC drift expedition from October 2019 to July 2020: sea ice conditions from space and comparison with previous years
We combine satellite data products to provide a first and general overview of the physical sea ice conditions along the drift of the international Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition and a comparison with previous years (2005–2006 to 2018–2019)....
Published in: | The Cryosphere |
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Online Access: | https://doi.org/10.5194/tc-15-3897-2021 https://tc.copernicus.org/articles/15/3897/2021/ |
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ftcopernicus:oai:publications.copernicus.org:tc93296 2023-05-15T15:13:42+02:00 MOSAiC drift expedition from October 2019 to July 2020: sea ice conditions from space and comparison with previous years Krumpen, Thomas Albedyll, Luisa Goessling, Helge F. Hendricks, Stefan Juhls, Bennet Spreen, Gunnar Willmes, Sascha Belter, H. Jakob Dethloff, Klaus Haas, Christian Kaleschke, Lars Katlein, Christian Tian-Kunze, Xiangshan Ricker, Robert Rostosky, Philip Rückert, Janna Singha, Suman Sokolova, Julia 2021-08-20 application/pdf https://doi.org/10.5194/tc-15-3897-2021 https://tc.copernicus.org/articles/15/3897/2021/ eng eng doi:10.5194/tc-15-3897-2021 https://tc.copernicus.org/articles/15/3897/2021/ eISSN: 1994-0424 Text 2021 ftcopernicus https://doi.org/10.5194/tc-15-3897-2021 2021-08-23T16:22:28Z We combine satellite data products to provide a first and general overview of the physical sea ice conditions along the drift of the international Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition and a comparison with previous years (2005–2006 to 2018–2019). We find that the MOSAiC drift was around 20 % faster than the climatological mean drift, as a consequence of large-scale low-pressure anomalies prevailing around the Barents–Kara–Laptev sea region between January and March. In winter (October–April), satellite observations show that the sea ice in the vicinity of the Central Observatory (CO; 50 km radius) was rather thin compared to the previous years along the same trajectory. Unlike ice thickness, satellite-derived sea ice concentration, lead frequency and snow thickness during winter months were close to the long-term mean with little variability. With the onset of spring and decreasing distance to the Fram Strait, variability in ice concentration and lead activity increased. In addition, the frequency and strength of deformation events (divergence, convergence and shear) were higher during summer than during winter. Overall, we find that sea ice conditions observed within 5 km distance of the CO are representative for the wider (50 and 100 km) surroundings. An exception is the ice thickness; here we find that sea ice within 50 km radius of the CO was thinner than sea ice within a 100 km radius by a small but consistent factor (4 %) for successive monthly averages. Moreover, satellite acquisitions indicate that the formation of large melt ponds began earlier on the MOSAiC floe than on neighbouring floes. Text Arctic Fram Strait Kara-Laptev laptev Laptev Sea Sea ice Copernicus Publications: E-Journals Arctic Laptev Sea The Cryosphere 15 8 3897 3920 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
We combine satellite data products to provide a first and general overview of the physical sea ice conditions along the drift of the international Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition and a comparison with previous years (2005–2006 to 2018–2019). We find that the MOSAiC drift was around 20 % faster than the climatological mean drift, as a consequence of large-scale low-pressure anomalies prevailing around the Barents–Kara–Laptev sea region between January and March. In winter (October–April), satellite observations show that the sea ice in the vicinity of the Central Observatory (CO; 50 km radius) was rather thin compared to the previous years along the same trajectory. Unlike ice thickness, satellite-derived sea ice concentration, lead frequency and snow thickness during winter months were close to the long-term mean with little variability. With the onset of spring and decreasing distance to the Fram Strait, variability in ice concentration and lead activity increased. In addition, the frequency and strength of deformation events (divergence, convergence and shear) were higher during summer than during winter. Overall, we find that sea ice conditions observed within 5 km distance of the CO are representative for the wider (50 and 100 km) surroundings. An exception is the ice thickness; here we find that sea ice within 50 km radius of the CO was thinner than sea ice within a 100 km radius by a small but consistent factor (4 %) for successive monthly averages. Moreover, satellite acquisitions indicate that the formation of large melt ponds began earlier on the MOSAiC floe than on neighbouring floes. |
format |
Text |
author |
Krumpen, Thomas Albedyll, Luisa Goessling, Helge F. Hendricks, Stefan Juhls, Bennet Spreen, Gunnar Willmes, Sascha Belter, H. Jakob Dethloff, Klaus Haas, Christian Kaleschke, Lars Katlein, Christian Tian-Kunze, Xiangshan Ricker, Robert Rostosky, Philip Rückert, Janna Singha, Suman Sokolova, Julia |
spellingShingle |
Krumpen, Thomas Albedyll, Luisa Goessling, Helge F. Hendricks, Stefan Juhls, Bennet Spreen, Gunnar Willmes, Sascha Belter, H. Jakob Dethloff, Klaus Haas, Christian Kaleschke, Lars Katlein, Christian Tian-Kunze, Xiangshan Ricker, Robert Rostosky, Philip Rückert, Janna Singha, Suman Sokolova, Julia MOSAiC drift expedition from October 2019 to July 2020: sea ice conditions from space and comparison with previous years |
author_facet |
Krumpen, Thomas Albedyll, Luisa Goessling, Helge F. Hendricks, Stefan Juhls, Bennet Spreen, Gunnar Willmes, Sascha Belter, H. Jakob Dethloff, Klaus Haas, Christian Kaleschke, Lars Katlein, Christian Tian-Kunze, Xiangshan Ricker, Robert Rostosky, Philip Rückert, Janna Singha, Suman Sokolova, Julia |
author_sort |
Krumpen, Thomas |
title |
MOSAiC drift expedition from October 2019 to July 2020: sea ice conditions from space and comparison with previous years |
title_short |
MOSAiC drift expedition from October 2019 to July 2020: sea ice conditions from space and comparison with previous years |
title_full |
MOSAiC drift expedition from October 2019 to July 2020: sea ice conditions from space and comparison with previous years |
title_fullStr |
MOSAiC drift expedition from October 2019 to July 2020: sea ice conditions from space and comparison with previous years |
title_full_unstemmed |
MOSAiC drift expedition from October 2019 to July 2020: sea ice conditions from space and comparison with previous years |
title_sort |
mosaic drift expedition from october 2019 to july 2020: sea ice conditions from space and comparison with previous years |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-3897-2021 https://tc.copernicus.org/articles/15/3897/2021/ |
geographic |
Arctic Laptev Sea |
geographic_facet |
Arctic Laptev Sea |
genre |
Arctic Fram Strait Kara-Laptev laptev Laptev Sea Sea ice |
genre_facet |
Arctic Fram Strait Kara-Laptev laptev Laptev Sea Sea ice |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-15-3897-2021 https://tc.copernicus.org/articles/15/3897/2021/ |
op_doi |
https://doi.org/10.5194/tc-15-3897-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
8 |
container_start_page |
3897 |
op_container_end_page |
3920 |
_version_ |
1766344227713712128 |