Dissolved inorganic carbon and total alkalinity of seawater samples from a Weddell Sea coastal polynya during two tidal observation case studies for RV POLARSTERN expeditions PS89 and PS117


Discrete seawater samples in a Weddell Sea coastal polynya along the Ekström Ice Shelf were collected from two sets of repeat CTD casts, capturing tidal variability in the water column. One set was collected during RV POLARSTERN expedition PS89, between 8 and 11 January 2015. The second set was collected during RV POLARSTERN expedition PS117, between 11 and 12 January 2019. Dissolved inorganic carbon (DIC) and total alkalinity (TA) were measured using coulometric titration and potentiometric titration, respectively, on a VINDTA 3C system. DIC and TA have been normalised to salinity: nDIC and nTA. Nutrients were measured with UV-Vis spectrophotometry and a continuous gas-segmented flow auto-analyser.

A fraction of oceanographic profiles (from CTD casts), the temperature, salinity, oxygen, and nutrient data have already previously been published (https://doi.org/10.1594/PANGAEA.910673). We have included these to maintain consistency with the rest of the profiles in the dataset (for which these variables have not been published yet). In addition to the fact that exactly these data were used in the calculations for the marine carbonate system in Droste et al. (2022), it is also easier for users to work with this dataset in the future. The DOI of the already published data is included in the comment column of the dataset itself. Details on sample collection, analysis methods, and salinity-normalisation of DIC and TA can be found in Droste et al. (2022).

DOI https://doi.org/10.1594/PANGAEA.946363
Related Identifier IsSupplementTo https://doi.org/10.5194/os-2022-19
Related Identifier IsDerivedFrom https://doi.org/10.1594/PANGAEA.910673
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.946363
Creator González-Dávila, Melchor ORCID logo; Droste, Elise Sayana ORCID logo; Santana-Casiano, Juana Magdalena ORCID logo; Schuller, Daniel; Ossebaar, Sharyn; Hoppema, Mario (ORCID: 0000-0002-2326-619X); Bakker, Dorothee C E ORCID logo
Publisher PANGAEA
Publication Year 2022
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 4032 data points
Discipline Earth System Research
Spatial Coverage (-8.771W, -70.523S, -8.758E, -70.520N); Weddell Sea
Temporal Coverage Begin 2015-01-08T08:14:00Z
Temporal Coverage End 2019-01-12T12:11:57Z