Name: Processed Dissolved Inorganic Carbon (DIC) and Total Alkalinity (TA) data from the International Indian Ocean Expedition 2 (IIOE2) cruise on SA Agulhas II Voyage 028 in October 2017
License: https://repository.saeon.ac.za/index.php/s/PzfgExZEQ3ysGKK

DOI: 10.15493/dea.mims.26500004

Title	Processed Dissolved Inorganic Carbon (DIC) and Total Alkalinity (TA) data from the International Indian Ocean Expedition 2 (IIOE2) cruise on SA Agulhas II Voyage 028 in October 2017
Project	International Indian Ocean Expedition 2 (IIOE2)
Authors	Mutshutshu Tsanwani Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Marine Scientist Production C 2nd Floor, Foretrust Building, 1 Martin Hammerschlag Way, Cape Town, South Africa, tsanwanim@environment.gov.za
Publisher	Department of Forestry, Fisheries and the Environment (2023)
Contributors	Contact Person: Mutshutshu Tsanwani Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Marine Scientist Production C 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, tsanwanim@environment.gov.za Project Member: Baxolele Mdokwana Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Technician Production A 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, BMdokwana@environment.gov.za
Abstract	This is processed Dissolved Inorganic Carbon (DIC) and Total Alkalinity (TA) data from the IIOE2 cruise on SA Agulhas II Voyage 028, between 14 October and 15 November 2017. The International Indian Ocean Expedition 2 is a collaborative regional cruise to build capacity and strength within Africa. The focus will be on developing students in the region in the areas of physical oceanography, chemistry, biological oceanography, benthic biodiversity, marine top predators and marine plastics.
Methods	Seawater samples were collected in 500 ml bottles at selected depths from CTD Niskin bottles and spiked with 100 ul HgCl2 before sealing the glass bottle with a stopper. Samples were collected and analysed onboard using a VINDTA 3C. The accuracy was checked using certified reference materials (CRMs) obtainable from the Andrew Dickson Laboratory (for more information about the oceanic CO2 reference materials, see http://www-mpl.ucsd.edu/people/adickson/CO2_QC/). Precision was checked by analysing 10 replicate samples taken from 500 m depth at selected offshore stations. The precision for Dissolved Inorganic Carbon (DIC) and Total Alkalinity (TA) was 4.25 µmol/kg and 1.51 µmol/kg, respectively. The data was cleaned to remove obvious outliers. Further data cleaning to the satisfaction of the user is recommended.
Data	Embargoed Cite 10.15493/dea.mims.26500004 Style Terms of use These data are made available with the express understanding that any such use will properly acknowledge the originator(s) and publisher and cite the accession numbers and/or associated Digital Object Identifiers. Anyone wishing to use these data should properly cite and attribute the data providers listed as authors in the metadata provided with each dataset. It is expected that all the conditions of the data license will be strictly honoured. Use of any material herein should be properly cited using the dataset’s persistent identifiers such as accession numbers and DOIs. I agree to the terms of use
Temporal extent	14 Oct 2017 – 15 Nov 2017
Geographic extent	Tanzania, Mozambique, South Africa North: -14.0 South: -22.0 West: 34.0 East: 42.0
Vertical extent	Max: -1.499 m Min: -1502.625 m
Keywords	Chemical Oceanography, DIC, Dissolved Inorganic Carbon, IIOE2, INDIAN OCEAN, International Indian Ocean Expedition 2, Marine Biogeochemistry, Mozambique, NISKIN BOTTLES, Niskin Water Sampling Bottles, SA Agulhas II, SA Agulhas II 028, TA, Tanzania, Total Alkalinity, western Indian Ocean
Related resources	This digital object is part of International Indian Ocean Expedition 2 (IIOE2) cruise on SA Agulhas II Voyage 028, October 2017 (10.15493/dea.mims.26052266)

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