Dissolved inorganic carbon and total alkalinity of seawater samples during RV POLARSTERN expedition PS122 – MOSAiC

Discrete seawater samples for dissolved inorganic carbon (DIC) and total alkalinity (TA) were collected from the Polarstern (https://sensor.awi.de/?site=search&q=vessel:polarstern:ctd_sbe9plus_321) and Ocean City (https://sensor.awi.de/?site=search&q=vessel:polarstern:ctd_sbe9plus_935) CTD/Rosette systems during the Multidisciplinary drifting observatory for the study of Arctic Climate (MOSAiC) expedition, 20 September 2019 – 14 October 2020. Following Dickson et al. (2007), seawater samples were collected between 30 October 2019 and 28 September 2020 in borosilicate (3.3) bottles (250 ml), fixed with saturated mercuric chloride (HgCl₂) solution (100 µl), capped with greased (Apiezon® L) ground glass stoppers secured by insulating tape, and stored dark +4°C until post-cruise analysis at the Institute of Marine Research (IMR, Norway), University of East Anglia (UEA, UK), and Hokkaido University (Japan). DIC was determined by coulometric titration (Johnson et al., 1985) using a Versatile INstrument for the Determination of Total inorganic carbon and titration Alkalinity (VINDTA 3C, Marianda, Germany) at UEA, a VINDTA 3D at IMR, and a custom-built extraction system at Hokkaido University (Ono et al., 1998). TA was determined by potentiometric titration using a VINDTA 3C at UEA, a Versatile Instrument for the Determination of Titration Alkalinity (VINDTA 3S, Marianda, Germany) at IMR, and a TA analyzer ATT-05 (Kimoto Electric Co., Ltd., Japan) at Hokkaido University. The accuracy for both DIC and TA was set at IMR and UEA by routine analysis of certified reference material (CRM batch #182, #191) distributed by A. G. Dickson (Scripps Institution of Oceanography, La Jolla, CA, USA). Reference materials (Batch AR and AU; KANSO Technos Co., Ltd., Osaka, Japan), traceable to the Scripps CO₂ CRM, were used at Hokkaido University. Analytical precision for DIC and TA content is < ±2 μmol/kg and < ±2 μmol/kg, respectively, based on CRM replicates. Based on secondary quality control (Jutterström et al., 2010; Tanhua et al., 2010), DIC and TA were adjusted by -8 µmol/kg and -23 µmol/kg, respectively, for events PS122/1_7-49, PS122/1_8-46, PS122/1_9-50, and PS122/1_10-45. Data quality is indicated by flags following the consolidated WOCE system of Jiang et al. (2022).

This dataset was produced as part of the international Multidisciplinary drifting Observatory for the Study of the Arctic Climate (MOSAiC) with the tag MOSAiC20192020. We thank all persons involved in the expedition of the Research Vessel Polarstern during MOSAiC in 2019-2020 (AWI_PS122_00) as listed in Nixdorf et al. (2021). This work was supported by the Swedish Polar Research Secretariat as part of the MOSAiC 2019-2020 expedition.

Identifier
DOI https://doi.org/10.1594/PANGAEA.954969
PID https://hdl.handle.net/10013/epic.51789.d001
Related Identifier References https://doi.org/10.3389/fmars.2021.705638
Related Identifier References https://doi.org/10.1016/0304-4203(85)90028-3
Related Identifier References https://doi.org/10.5194/essd-2-71-2010
Related Identifier References https://doi.org/10.5281/zenodo.5179738
Related Identifier References https://doi.org/10.1029/1998JC900018
Related Identifier References https://doi.org/10.5194/essd-2-35-2010
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.954969
Provenance
Creator Ulfsbo, Adam ORCID logo; Chierici, Melissa; Droste, Elise Sayana ORCID logo; Nomura, Daiki; Fransson, Agneta; Bakker, Dorothee C E ORCID logo; Fong, Allison A ORCID logo; Gardner, Jessie; Hoppe, Clara Jule Marie ORCID logo; Hoppema, Mario (ORCID: 0000-0002-2326-619X); Roden, Nicholas; Rost, Björn ORCID logo; Torres-Valdés, Sinhué ORCID logo
Publisher PANGAEA
Publication Year 2023
Funding Reference Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven https://doi.org/10.13039/501100003207 Crossref Funder ID AFMOSAiC-1_00 Multidisciplinary drifting Observatory for the Study of Arctic Climate; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven https://doi.org/10.13039/501100003207 Crossref Funder ID AWI_PS122_00 Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC; Department for Business, Energy and Industrial Strategy, UK Government https://doi.org/10.13039/100011693 Crossref Funder ID BEIS_MOSAiC ; Japan Society for the Promotion of Science https://doi.org/10.13039/501100001691 Crossref Funder ID JP18KK0292 https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18KK0292/ Joint research between Germany and Japan on the Arctic moistening; Natural Environment Research Council https://doi.org/10.13039/501100000270 Crossref Funder ID NE/L002582/1 NERC EnvEast Doctoral Training Partnership - NE/L002582/1; Swedish Research Council https://doi.org/10.13039/501100004359 Crossref Funder ID 2018-01398_Formas https://www.vr.se/english/swecris.html#/project/2018-01398_Formas Drivers of anthropogenic changes in carbon storage and ocean acidification in the new Arctic Ocean (DRACO2); The Research Council of Norway https://doi.org/10.13039/501100005416 Crossref Funder ID 276730 The Nansen Legacy; The Research Council of Norway https://doi.org/10.13039/501100005416 Crossref Funder ID 280292 https://prosjektbanken.forskningsradet.no/en/project/FORISS/280292 Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 8580 data points
Discipline Chemistry; Natural Sciences
Spatial Coverage (-35.688W, 79.206S, 131.631E, 89.993N); Arctic Ocean
Temporal Coverage Begin 2019-10-31T01:34:00Z
Temporal Coverage End 2020-09-28T10:17:00Z