Preprints
https://doi.org/10.5194/essd-2023-92
https://doi.org/10.5194/essd-2023-92
24 Mar 2023
 | 24 Mar 2023
Status: this preprint is currently under review for the journal ESSD.

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

Jean-Pierre Gattuso, Samir Alliouane, and Philipp Fischer

Abstract. 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 (5 years) dataset of salinity, temperature, dissolved inorganic carbon, total alkalinity, CO2 partial pressure (pCO2) and pH at a coastal site (11 m) in a high-Arctic fjord (Kongsfjorden, Svalbard). We show that (1) the choice of formulations for calculating the dissociation constants of the carbonic acid remains unsettled for Arctic waters, (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 (Ωa 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 (16.8 mol CO2 m−2 yr−1).

Jean-Pierre Gattuso et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2023-92', Leif Anderson, 05 Apr 2023
  • RC2: 'Comment on essd-2023-92', Yuanxu Dong, 27 Apr 2023

Jean-Pierre Gattuso et al.

Data sets

High-frequency, year-round time series of the carbonate chemistry in a high-Arctic fjord (Svalbard) (0.9) J.-P. Gattuso, S. Alliouane, and P. Fischer https://doi.org/10.5281/zenodo.7714954

Jean-Pierre Gattuso et al.

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Short summary
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. Data are spotty in space and time. We report here on the first high-frequency (1 h), multi-year (5 years) dataset of salinity, temperature, dissolved inorganic carbon, total alkalinity, CO2 partial pressure and pH at a coastal site in a high-Arctic fjord (Kongsfjorden, Svalbard).