Oceanic carbonate chemistry measurements from discret samples collected at the SOLEMIO station (Bay of Marseille - North western Mediterannean Sea) between 2016 and 2019

This dataset  reports ocenanic CO2 parameters measured on discret samples collected at the SOLEMIO station (Bay of Marseille - North Western Mediterranean Sea - aprox. 65 m depth). The SOLEMIO station is part of the French national network of coastal observation SOMLIT (Service d’Observation en Milieu LITtoral – http://somlit.epoc.u-bordeaux1.fr/fr/). Measurements of carbonate chemistry parameters are not routinely measured within the framework of the SOMLIT network.
This datased reports fortnightly measurements collected during three years (between june 2016 and june 2018) at three different depth in the water column (Surface, intermediate and bottom). This dataset is constituted of measurements of total alkalinity, total inorganic carbon and pH (on the total scale). Dissolved oxygen concentrations, inorganic nutrients, temperature and salinity (SOMLIT core parameters) are also reported.

This dataset  reports ocenanic CO2 parameters measured on discret samples collected at the SOLEMIO station (Bay of Marseille - North Western Mediterranean Sea - aprox. 65 m depth). The SOLEMIO station is part of the French national network of coastal observation SOMLIT (Service d’Observation en Milieu LITtoral – http://somlit.epoc.u-bordeaux1.fr/fr/). Measurements of carbonate chemistry parameters are not routinely measured within the framework of the SOMLIT network.
This datased reports fortnightly measurements collected during three years (between june 2016 and june 2018) at three different depth in the water column (Surface, intermediate and bottom). This dataset is constituted of measurements of total alkalinity, total inorganic carbon and pH (on the total scale). Dissolved oxygen concentrations, inorganic nutrients, temperature and salinity (SOMLIT core parameters) are also reported.

Disciplines

Chemical oceanography

Keywords

marine chemistry, carbonate system, mediterannean, bay of marseille

Location

43.25N, 43.23S, 5.3E, 5.28W

Devices

Samples for dissolved inorganic carbon (TCARBN) and total alkalinity (ALKALI) were collected into acid washed 500 cm 3 borosilicate glass bottles and poisoned with 200 mm 3 of a 36 g.m 3 HgCl 2 , as recommended by Dickson et al. (2007). Samples were stored in the dark at 4 °C for 1–6 months before analysis. Measurements of TCARBN and ALKALI were performed simultaneously by potentiometric acid titration using a closed cell following the methods described by Edmond (1970) and Dickson and Goyet. (1994). Analyses were performed at the National facility for analysis of carbonate system parameters (SNAPO-CO 2 , LOCEAN, Sor­bonne University – CNRS, France). Average accuracy of ALKALI and TCARBN analysis was 2.3 and 2.6 μmol.kg 1 , respectively, validated using Certified Reference Material (CRM) provided by A. Dickson’s laboratory (Scripps Institution of Oceanog­raphy, San Diego).
The pH was measured spectrophotometrically at the MIO (Mediter­ranean Institute of Oceanography, Marseille – France). Unpurified m-cresol purple (McP) dye (Sigma®) at standard temperature (25 ° C) was used and results are reported on the total hydrogen ion concentration scale. Measurements were performed following the protocol described by Clayton and Byrne (1993). The parameter PHT25 was calculated following Dickson et al. (2007). The reproducibility of the measurements based on replicates measurements was 0.001.
Unfiltered samples were collected for nutrient analysis in 60 cm3 polyethylene flasks and immediately frozen. Nutrient concentrations were obtained following the protocol of Aminot and Kerouel, 2007. Detection limits for nitrite NITRIT, NITRAT, and SILCAT were of 0.05 μmol.kg -1 and 0.003–0.006 μmol.kg -1 for PHPHAT.

Dissolved oxygen (DOXY) has been measured by winkler titration with potentiometric endpoint detection.

 

Data

FileSizeFormatProcessingAccess
data file
27 KoASCQuality controlled data
Data description for data file
3 KoASCQuality controlled data
How to cite
Wimart-Rousseau Cathy, Wagener thibaut, Raimbault Patrick, Lagadec Véronique, Lafont Michel, Garcia Nicole, Lefevre Dominique (2020). Oceanic carbonate chemistry measurements from discret samples collected at the SOLEMIO station (Bay of Marseille - North western Mediterannean Sea) between 2016 and 2019. SEANOE. https://doi.org/10.17882/72356

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