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Pré-Publication, Document De Travail (Preprint/Prepublication) Année : 2023

A synthesis of SNAPO-CO2 ocean total alkalinity and total dissolved inorganic carbon measurements from 1993 to 2022

Pascal Conan
Frédéric Diaz
  • Fonction : Auteur
Éric Douville
Nathalie Lefèvre
Anne Petrenko
Thibaut Wagener

Résumé

Total alkalinity (A T) and total dissolved inorganic carbon (C T) in the oceans are important properties to understand the ocean carbon cycle and its link with climate change (ocean carbon sinks and sources) or global change (ocean acidification). We present a database of more than 44 400 A T and C T observations in various ocean regions obtained since 1993 mainly in the frame of French projects. This includes both surface and water columns data acquired in open oceans, coastal zones and in the Mediterranean Sea and either from time-series or punctual cruises. Most A T and C T data in this synthesis were measured from discrete samples using the same closed-cell potentiometric titration calibrated with Certified Reference Material, with an overall accuracy of ± 4 µmol kg-1 for both A T and C T. Given the lack of observations in the Indian and Southern Oceans, we added sea
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Dates et versions

hal-04292340 , version 1 (04-09-2023)
hal-04292340 , version 2 (17-11-2023)

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Nicolas Metzl, Jonathan Fin, Claire Lo Monaco, Claude Mignon, Samir Alliouane, et al.. A synthesis of SNAPO-CO2 ocean total alkalinity and total dissolved inorganic carbon measurements from 1993 to 2022. 2023. ⟨hal-04292340v1⟩
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