High-frequency, year-round time series of the carbonate chemistry in a high-Arctic fjord (Svalbard)

DOI

The Arctic Ocean is subject to high rates of ocean warming and acidification, with critical implications for marine organisms as well as ecosystems and the services they provide. Carbonate system data in the Arctic realm are spotty in space and time and, until recently, there was no time-series station measuring the carbonate chemistry at high frequency in this region, particularly in coastal waters. We report here on the first high-frequency (1 h), multi-year (6 years) dataset of salinity, temperature, dissolved inorganic carbon, total alkalinity, CO2 partial pressure (pCO2) and pH at a coastal site (12 m) in Kongsfjorden, Svalbard. We show that the choice of formulations for calculating the dissociation constants of the carbonic acid remains unsettled, (2) the water column is generally somewhat stratified despite the shallow depth, (3) the saturation state of calcium carbonate is subject to large seasonal changes but never reaches undersaturation (Oa ranges between 1.4 and 3.0) and (4) pCO2 is lower than atmospheric CO2 at all seasons, making this site a sink for atmospheric CO2.

Identifier
DOI https://doi.org/10.1594/PANGAEA.957028
Related Identifier IsPreviousVersionOf https://doi.org/10.1594/PANGAEA.960131
Related Identifier IsSupplementTo https://doi.org/10.5194/essd-15-2809-2023
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.957028
Provenance
Creator Gattuso, Jean-Pierre ORCID logo; Alliouane, Samir; Fischer, Philipp ORCID logo
Publisher PANGAEA
Publication Year 2023
Funding Reference Horizon 2020 https://doi.org/10.13039/501100007601 Crossref Funder ID 654410 https://cordis.europa.eu/project/id/654410 Joint European Research Infrastructure network for Coastal Observatory – Novel European eXpertise for coastal observaTories; Horizon 2020 https://doi.org/10.13039/501100007601 Crossref Funder ID 727890 doi:10.3030/727890 Integrated Arctic observation system (INTAROS); Horizon 2020 https://doi.org/10.13039/501100007601 Crossref Funder ID 869154 https://doi.org/10.3030/869154 Arctic Biodiversity & Livelihoods (FACE-IT)
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 265805 data points
Discipline Chemistry; Natural Sciences
Spatial Coverage (11.920 LON, 78.931 LAT); Kongsfjorden, Svalbard
Temporal Coverage Begin 2015-07-10T05:00:00Z
Temporal Coverage End 2021-01-10T00:00:00Z