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  Physical properties of sea ice cores from L sites measured on leg 1 of the MOSAiC expedition

Angelopoulos, M., Damm, E., Simões Pereira, P., Abrahamsson, K., Bauch, D., Bowman, J. S., Dumitrascu, A., Marsay, C. M., Rinke, A., Sachs, T., Stefels, J., Stephens, M., Verdugo, J., Wang, L., Zhan, L. (2022): Physical properties of sea ice cores from L sites measured on leg 1 of the MOSAiC expedition.
https://doi.org/10.1594/PANGAEA.943815

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5014967 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5014967_1
Genre: Data Publication

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https://doi.org/10.1594/PANGAEA.943811 (Supplementary material)
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In: Angelopoulos, Michael; Damm, Ellen; Simões Pereira, Patric; Abrahamsson, Katarina; Bauch, Dorothea; Bowman, Jeff S; Castellani, Giulia; Creamean, Jessie; Divine, Dmitry V; Dumitrascu, Adela; Eggers, Lena; Fong, Allison A; Fons, Steven W; Gradinger, Rolf; Granskog, Mats A; Grosse, Julia; Haapala, Jari; Haas, Christian; Hoppe, Clara Jule Marie; Høyland, Knut Vilhelm; Immerz, Antonia; Kolabutin, Nikolai; Krumpen, Thomas; Lei, Ruibo; Marsay, Christopher M; Maus, Sönke; Nicolaus, Marcel; Nubom, Alexey; Oggier, Marc; Olsen, Lasse Mork; Rember, Robert; Ren, Jian; Rinke, Annette; Sachs, Torsten; Sheikin, Igor; Shimanchuk, Egor; Spahic, Susanne; Stefels, Jacqueline; Stephens, Mark; Torres-Valdés, Sinhue; Torstensson, Anders; Ulfsbo, Adam; Verdugo, Josefa; Wang, Lei; Wischnewski, Laura; Zhan, Liyang (2022): Physical properties of sea ice cores for biogeochemistry studies measured on legs 1 to 3 of the MOSAiC expedition. PANGAEA, https://doi.org/10.1594/PANGAEA.943811

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 Creators:
Angelopoulos, Michael1, Author
Damm, Ellen1, Author
Simões Pereira, Patric1, Author
Abrahamsson, Katarina1, Author
Bauch, Dorothea1, Author
Bowman, Jeff S.1, Author
Dumitrascu, Adela1, Author
Marsay, Christopher M.1, Author
Rinke, Annette1, Author
Sachs, T.2, Author              
Stefels, Jacqueline1, Author
Stephens, Mark1, Author
Verdugo, Josefa1, Author
Wang, Lei1, Author
Zhan, Liyang1, Author
Affiliations:
1External Organizations, ou_persistent22              
21.4 Remote Sensing, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146028              

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Free keywords: Arctic Ocean; brine; first-year ice; MOSAiC20192020; MOSAiC_BGC; MOSAiC_ECO; MOSAiC expedition; MOSAiC_ICE; MOSAiC_SNOW; Sea ice; second-year ice; Temperature and Salinity
 Abstract: We present sea ice temperature and salinity data from first-year ice (FYI) and second-year ice (SYI) relevant to the temporal development of sea ice permeability and brine drainage efficiency from the early growth phase in October 2019 to the onset of spring warming in May 2020. Our dataset was collected in the central Arctic Ocean during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Expedition in 2019 to 2020. MOSAiC was an international transpolar drift expedition in which the German icebreaker RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. In October 2019, RV Polarstern moored to an ice floe in the Siberian sector of the Arctic at 85 degrees north and 137 degrees east to begin the drift towards the North Pole and the Fram Strait via the Transpolar Drift Stream. The data presented here were collected during the first three legs of the expedition, so all the coring activities took place on the same floe. The end dates of legs 1, 2, and 3 were 13 December, 24 February, and 4 June, respectively. The dataset contributed to a baseline study entitled, Deciphering the properties of different Arctic ice types during the growth phase of the MOSAiC floes: Implications for future studies. The study highlights downward directed gas pathways in FYI and SYI by inferring sea ice permeability and potential brine release from several time series of temperature and salinity measurements. The physical properties presented in this paper lay the foundation for subsequent analyses on actual gas contents measured in the ice cores, as well as air-ice and ice-ocean gas fluxes. Sea ice cores were collected with a Kovacs Mark II 9 cm diameter corer. To measure ice temperatures, about 4.5 cm deep holes were drilled into the core (intervals varied by site and leg) . The temperatures were measured by a digital thermometer within minutes after the cores were retrieved. The ice cores were placed into pre-labelled plastic sleeves sealed at the bottom end. The ice cores were transported to RV Polarstern and stored in a -20 degrees Celsius freezer. Each of the cores was sub-sampled, melted at room temperature, and processed for salinity within one or two days. The practical salinity was estimated by measuring the electrical conductivity and temperature of the melted samples using a WTW Cond 3151 salinometer equipped with a Tetra-Con 325 four-electrode conductivity cell. The practical salinity represents the the salinity estimated from the electrical conductivity of the solution. The dataset also contains derived variables, including sea ice density, brine volume fraction, and the Rayleigh number.

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Language(s): eng - English
 Dates: 20222022
 Publication Status: Finally published
 Pages: -
 Publishing info: PANGAEA
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1594/PANGAEA.943815
 Degree: -

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