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Dissolved inorganic carbon (DIC), total alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations during the R/V Marion Dufresne cruise OISO-18 (EXPOCODE 35MF20091219) in the Indian Ocean from 2009-12-19 to 2010-01-24 (NCEI Accession 0109906)

INVESTIGATORS:
Claire Lo Monaco ORCID logo - Sorbonne University (SU)
Nicolas Metzl ORCID logo - Sorbonne University (SU)

PACKAGE DESCRIPTION: This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, temperature, salinity, dissolved oxygen, and nutrients obtained during the R/V Marion Dufresne cruise OISO-18 (EXPOCODE 35MF20091219) in the Indian Ocean from 2009-12-19 to 2010-01-24. These data were collected by C. Lo Monaco of Universite Pierre et Marie Curie; Institut Pierre Simon Laplace; Laboratoire D'Oceanographie et du Climat: Experimentations et Approches Numeriques and Nicolas Metzl of Universite Pierre et Marie Curie; Laboratoire de Biogeochimie et Chimie Marines as part of the CLIVAR_OISO18 data set. The International CLIVAR Global Ocean Carbon and Repeat Hydrography Program carries out a systematic and global re-occupation of select WOCE/JGOFS hydrographic sections to quantify changes in storage and transport of heat, fresh water, carbon dioxide (CO2), and related parameters.

CITE AS: Lo Monaco, Claire; Metzl, Nicolas (2013). Dissolved inorganic carbon (DIC), total alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations during the R/V Marion Dufresne cruise OISO-18 (EXPOCODE 35MF20091219) in the Indian Ocean from 2009-12-19 to 2010-01-24 (NCEI Accession 0109906). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.oiso18_35mf20091219. Accessed [date].


DATA PACKAGES RELATED TO THIS ONE:
IDENTIFICATION INFORMATION FOR THIS DATA PACKAGE:
NCEI ACCESSION: 0109906
NCEI DOI: https://doi.org/10.3334/cdiac/otg.oiso18_35mf20091219
EXPOCODE: 35MF20091219;
CRUISE ID: CLIVAR_OISO-18;
SECTION/LEG: OISO-18;

TYPES OF STUDY:
Discrete measurement;Profile;

TEMPORAL COVERAGE:
START DATE: 2009-12-19
END DATE: 2010-01-24

SPATIAL COVERAGE:
NORTH: -28
WEST: 52.11
EAST: 84.2603
SOUTH: -57.522

GEOGRAPHIC NAMES:
Indian Ocean;

PLATFORMS:
Marion Dufresne (ID: 35MF);

RESEARCH PROJECT(S):
none;

VARIABLES / PARAMETERS:

Dissolved Inorganic Carbon
Abbreviation: TCARBN
Observation type: discrete
In-situ / Manipulation / Response variable: In-situ observation
Measured or calculated: Calculated
Replicate information: Field Replicate: Deep replicate samples were collected from two different Niskin bottles (usually 1000m or bottom). The mean difference between two deep replicates was 2.1 +/-1.9 mol/kg for total CO2 and 2.3+/-2.1 μmol/kg for alkalinity (n=15).
Standardization description: Certified Referenced Materials (CRMs), batch #91 and #97, provided by Dr. A. Dickson (SIO, University of California). The precision of the titration system, based on the analysis of CRMs, was +/-2.9 μmol/kg for both total CO2 and alkalinity.
CRM batch number: 91, 97
Total alkalinity
Abbreviation: ALKALI
Observation type: discrete
In-situ / Manipulation / Response variable: In-situ observation
Measured or calculated: Measured
Cell type (open or closed): closed
Curve fitting method: Water samples were collected from the Niskin bottles in 500 ml glass bottles for the simultaneous analysis of total CO2 and total alkalinity. Measurements were performed onboard following a potentiometric titration method (Edmond, 1970), using an automated system with a closed cell described by Goyet et al. (1991). The equivalence point is determined using a non-linear regression method (D.O.E., 1994).
Uncertainty: +/-3 μmol/kg
Method reference: Edmond J. M., 1970. High precision determination of titration of alkalinity and total CO2 of seawater by potentiometric titration, Deep-Sea Research, 17, 737-750.
CTDTMP
Abbreviation: CTDTMP
Unit: DEG_C
Controlled vocabulary name: WATER TEMPERATURE
In-situ / Manipulation / Response variable: in-situ
CTDSAL
Abbreviation: CTDSAL
Controlled vocabulary name: SALINITY
In-situ / Manipulation / Response variable: in-situ
SALNTY
Abbreviation: SALNTY
Controlled vocabulary name: SALINITY
In-situ / Manipulation / Response variable: in-situ
OXYGEN
Abbreviation: OXYGEN
Unit: UMOL/KG
Controlled vocabulary name: DISSOLVED OXYGEN
In-situ / Manipulation / Response variable: in-situ
SILCAT
Abbreviation: SILCAT
Unit: UMOL/KG
Controlled vocabulary name: silicate
In-situ / Manipulation / Response variable: in-situ
NITRAT
Abbreviation: NITRAT
Unit: UMOL/KG
Controlled vocabulary name: NITRATE
In-situ / Manipulation / Response variable: in-situ
NITRIT
Abbreviation: NITRIT
Unit: UMOL/KG
Controlled vocabulary name: NITRITE
In-situ / Manipulation / Response variable: in-situ
PHSPHT
Abbreviation: PHSPHT
Unit: UMOL/KG
Controlled vocabulary name: phosphate
In-situ / Manipulation / Response variable: in-situ
THETA
Abbreviation: THETA
Unit: DEG_C
Controlled vocabulary name: Potential temperature (theta)
In-situ / Manipulation / Response variable: in-situ
PUBLICATIONS DESCRIBING THIS DATASET:
none;
ADDITIONAL INFORMATION:
none;
FUNDING AGENCY:

SUBMITTED BY: Alex Kozyr (Alex.Kozyr@noaa.gov)

SUBMISSION DATE: 2013-07-03

REVISION DATE: 2017-02-21

PREVIOUS VERSIONS: Version 1.1