The MOSAiC ice floe: sediment-laden survivor from the Siberian shelf
In September 2019, the research icebreaker Polarstern started the largest multidisciplinary Arctic expedition to date, the MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) drift experiment. Being moored to an ice floe for a whole year, thus including the winter season,...
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COPERNICUS GESELLSCHAFT MBH
2020
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ftucl:oai:eprints.ucl.ac.uk.OAI2:10107321 2023-12-24T10:14:00+01:00 The MOSAiC ice floe: sediment-laden survivor from the Siberian shelf Krumpen, T Birrien, F Kauker, F Rackow, T von Albedyll, L Angelopoulos, M Belter, HJ Bessonov, V Damm, E Dethloff, K Haapala, J Haas, C Harris, C Hendricks, S Hoelemann, J Hoppmann, M Kaleschke, L Karcher, M Kolabutin, N Lei, R Lenz, J Morgenstern, A Nicolaus, M Nixdorf, U Petrovsky, T Rabe, B Rabenstein, L Rex, M Ricker, R Rohde, J Shimanchuk, E Singha, S Smolyanitsky, V Sokolov, V Stanton, T Timofeeva, A Tsamados, M Watkins, D 2020-07-06 text https://discovery.ucl.ac.uk/id/eprint/10107321/1/tc-14-2173-2020.pdf https://discovery.ucl.ac.uk/id/eprint/10107321/ eng eng COPERNICUS GESELLSCHAFT MBH https://discovery.ucl.ac.uk/id/eprint/10107321/1/tc-14-2173-2020.pdf https://discovery.ucl.ac.uk/id/eprint/10107321/ open The Cryosphere , 14 (7) pp. 2173-2187. (2020) Science & Technology Physical Sciences Geography Physical Geosciences Multidisciplinary Physical Geography Geology THICKNESS DISTRIBUTION SEA VARIABILITY EXPORT MODEL Article 2020 ftucl 2023-11-27T13:07:28Z In September 2019, the research icebreaker Polarstern started the largest multidisciplinary Arctic expedition to date, the MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) drift experiment. Being moored to an ice floe for a whole year, thus including the winter season, the declared goal of the expedition is to better understand and quantify relevant processes within the atmosphere–ice–ocean system that impact the sea ice mass and energy budget, ultimately leading to much improved climate models. Satellite observations, atmospheric reanalysis data, and readings from a nearby meteorological station indicate that the interplay of high ice export in late winter and exceptionally high air temperatures resulted in the longest ice-free summer period since reliable instrumental records began. We show, using a Lagrangian tracking tool and a thermodynamic sea ice model, that the MOSAiC floe carrying the Central Observatory (CO) formed in a polynya event north of the New Siberian Islands at the beginning of December 2018. The results further indicate that sea ice in the vicinity of the CO (<40 km distance) was younger and 36 % thinner than the surrounding ice with potential consequences for ice dynamics and momentum and heat transfer between ocean and atmosphere. Sea ice surveys carried out on various reference floes in autumn 2019 verify this gradient in ice thickness, and sediments discovered in ice cores (so-called dirty sea ice) around the CO confirm contact with shallow waters in an early phase of growth, consistent with the tracking analysis. Since less and less ice from the Siberian shelves survives its first summer (Krumpen et al., 2019), the MOSAiC experiment provides the unique opportunity to study the role of sea ice as a transport medium for gases, macronutrients, iron, organic matter, sediments and pollutants from shelf areas to the central Arctic Ocean and beyond. Compared to data for the past 26 years, the sea ice encountered at the end of September 2019 can already be ... Article in Journal/Newspaper Arctic Arctic Ocean New Siberian Islands Sea ice The Cryosphere University College London: UCL Discovery Arctic Arctic Ocean New Siberian Islands ENVELOPE(142.000,142.000,75.000,75.000) |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
topic |
Science & Technology Physical Sciences Geography Physical Geosciences Multidisciplinary Physical Geography Geology THICKNESS DISTRIBUTION SEA VARIABILITY EXPORT MODEL |
spellingShingle |
Science & Technology Physical Sciences Geography Physical Geosciences Multidisciplinary Physical Geography Geology THICKNESS DISTRIBUTION SEA VARIABILITY EXPORT MODEL Krumpen, T Birrien, F Kauker, F Rackow, T von Albedyll, L Angelopoulos, M Belter, HJ Bessonov, V Damm, E Dethloff, K Haapala, J Haas, C Harris, C Hendricks, S Hoelemann, J Hoppmann, M Kaleschke, L Karcher, M Kolabutin, N Lei, R Lenz, J Morgenstern, A Nicolaus, M Nixdorf, U Petrovsky, T Rabe, B Rabenstein, L Rex, M Ricker, R Rohde, J Shimanchuk, E Singha, S Smolyanitsky, V Sokolov, V Stanton, T Timofeeva, A Tsamados, M Watkins, D The MOSAiC ice floe: sediment-laden survivor from the Siberian shelf |
topic_facet |
Science & Technology Physical Sciences Geography Physical Geosciences Multidisciplinary Physical Geography Geology THICKNESS DISTRIBUTION SEA VARIABILITY EXPORT MODEL |
description |
In September 2019, the research icebreaker Polarstern started the largest multidisciplinary Arctic expedition to date, the MOSAiC (Multidisciplinary drifting Observatory for the Study of Arctic Climate) drift experiment. Being moored to an ice floe for a whole year, thus including the winter season, the declared goal of the expedition is to better understand and quantify relevant processes within the atmosphere–ice–ocean system that impact the sea ice mass and energy budget, ultimately leading to much improved climate models. Satellite observations, atmospheric reanalysis data, and readings from a nearby meteorological station indicate that the interplay of high ice export in late winter and exceptionally high air temperatures resulted in the longest ice-free summer period since reliable instrumental records began. We show, using a Lagrangian tracking tool and a thermodynamic sea ice model, that the MOSAiC floe carrying the Central Observatory (CO) formed in a polynya event north of the New Siberian Islands at the beginning of December 2018. The results further indicate that sea ice in the vicinity of the CO (<40 km distance) was younger and 36 % thinner than the surrounding ice with potential consequences for ice dynamics and momentum and heat transfer between ocean and atmosphere. Sea ice surveys carried out on various reference floes in autumn 2019 verify this gradient in ice thickness, and sediments discovered in ice cores (so-called dirty sea ice) around the CO confirm contact with shallow waters in an early phase of growth, consistent with the tracking analysis. Since less and less ice from the Siberian shelves survives its first summer (Krumpen et al., 2019), the MOSAiC experiment provides the unique opportunity to study the role of sea ice as a transport medium for gases, macronutrients, iron, organic matter, sediments and pollutants from shelf areas to the central Arctic Ocean and beyond. Compared to data for the past 26 years, the sea ice encountered at the end of September 2019 can already be ... |
format |
Article in Journal/Newspaper |
author |
Krumpen, T Birrien, F Kauker, F Rackow, T von Albedyll, L Angelopoulos, M Belter, HJ Bessonov, V Damm, E Dethloff, K Haapala, J Haas, C Harris, C Hendricks, S Hoelemann, J Hoppmann, M Kaleschke, L Karcher, M Kolabutin, N Lei, R Lenz, J Morgenstern, A Nicolaus, M Nixdorf, U Petrovsky, T Rabe, B Rabenstein, L Rex, M Ricker, R Rohde, J Shimanchuk, E Singha, S Smolyanitsky, V Sokolov, V Stanton, T Timofeeva, A Tsamados, M Watkins, D |
author_facet |
Krumpen, T Birrien, F Kauker, F Rackow, T von Albedyll, L Angelopoulos, M Belter, HJ Bessonov, V Damm, E Dethloff, K Haapala, J Haas, C Harris, C Hendricks, S Hoelemann, J Hoppmann, M Kaleschke, L Karcher, M Kolabutin, N Lei, R Lenz, J Morgenstern, A Nicolaus, M Nixdorf, U Petrovsky, T Rabe, B Rabenstein, L Rex, M Ricker, R Rohde, J Shimanchuk, E Singha, S Smolyanitsky, V Sokolov, V Stanton, T Timofeeva, A Tsamados, M Watkins, D |
author_sort |
Krumpen, T |
title |
The MOSAiC ice floe: sediment-laden survivor from the Siberian shelf |
title_short |
The MOSAiC ice floe: sediment-laden survivor from the Siberian shelf |
title_full |
The MOSAiC ice floe: sediment-laden survivor from the Siberian shelf |
title_fullStr |
The MOSAiC ice floe: sediment-laden survivor from the Siberian shelf |
title_full_unstemmed |
The MOSAiC ice floe: sediment-laden survivor from the Siberian shelf |
title_sort |
mosaic ice floe: sediment-laden survivor from the siberian shelf |
publisher |
COPERNICUS GESELLSCHAFT MBH |
publishDate |
2020 |
url |
https://discovery.ucl.ac.uk/id/eprint/10107321/1/tc-14-2173-2020.pdf https://discovery.ucl.ac.uk/id/eprint/10107321/ |
long_lat |
ENVELOPE(142.000,142.000,75.000,75.000) |
geographic |
Arctic Arctic Ocean New Siberian Islands |
geographic_facet |
Arctic Arctic Ocean New Siberian Islands |
genre |
Arctic Arctic Ocean New Siberian Islands Sea ice The Cryosphere |
genre_facet |
Arctic Arctic Ocean New Siberian Islands Sea ice The Cryosphere |
op_source |
The Cryosphere , 14 (7) pp. 2173-2187. (2020) |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/10107321/1/tc-14-2173-2020.pdf https://discovery.ucl.ac.uk/id/eprint/10107321/ |
op_rights |
open |
_version_ |
1786188350418321408 |