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Surface underway measurements of partial pressure of CO2, salinity, temperature and other associated parameters during the R/V Marion Dufresne OISO-27 cruise in Indian Ocean from 2017-01-05 to 2017-02-07 (NCEI Accession 0172096)

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

PACKAGE DESCRIPTION: This dataset includes continuous sea surface measurements of pCO2, temperature and salinity data during the R/V Marion Dufresne OISO-27 cruise in Indian Ocean from 2017-01-05 to 2017-02-07. The OISO program (Océan Indien Service d'Observations, supported by INSU/CNRS), initiated in 1998, collects measurements of CO2 and associated parameters (T, S, DIC, TA, O2, nutrients, Chl-a, 13C, 18O) along the repeated lines of R/V Marion Dufresne (IPEV-TAAF) in the South-Western Indian and Southern Oceans. This coverage is a complement of the international CO2 observing system (IOCCP). The OISO data are regularly included in international synthesis (SOCAT, GLODAP).

CITE AS: Metzl, Nicolas; Lo Monaco, Claire (2018). Surface underway measurements of partial pressure of CO2, salinity, temperature and other associated parameters during the R/V Marion Dufresne OISO-27 cruise in Indian Ocean from 2017-01-05 to 2017-02-07 (NCEI Accession 0172096). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5vx0dtw. Accessed [date].


DATA PACKAGES RELATED TO THIS ONE:
IDENTIFICATION INFORMATION FOR THIS DATA PACKAGE:
NCEI ACCESSION: 0172096
NCEI DOI: https://doi.org/10.7289/v5vx0dtw
EXPOCODE: 35MV20170105;
CRUISE ID: OISO-27;
SECTION/LEG: OISO;

TYPES OF STUDY:
Surface measurement;Surface underway;

TEMPORAL COVERAGE:
START DATE: 2017-01-05
END DATE: 2017-02-07

SPATIAL COVERAGE:
NORTH: -24.2
WEST: 51
EAST: 83.2
SOUTH: -56.8

GEOGRAPHIC NAMES:
Indian Ocean;

PLATFORMS:
R/V Marion-Dufresne (ID: 35MV);

RESEARCH PROJECT(S):
S.O. OISO;


VARIABLES / PARAMETERS:

pCO2 (fCO2) autonomous
Abbreviation: xCO2, fCO2
Unit: ppm, uatm
Observation type: Surface underway
Measured or calculated: Measured
Sampling instrument: Seawater pump
Analyzing instrument: NDIR - Poisson et al., 1993, JGR
Equilibrator type: Thin Film, Home-made equilibration cell (LOCEAN), Poisson et al., 1993, JGR
Equilibrator volume: 2 (L/min)
Is the equilibrator vented or not: Vented: each 20 mn
Water flow rate: 2 L/min
Drying method for gas: Thermoelectric cooling units followed by permeable membrane dryer and magnessium perchlorate tube
SEA CO2 gas detector manufacturer: Siemens
SEA CO2 gas detector model: Ultramat 6F
SEA CO2 gas detector resolution: Precision 0.5 uatm
SEA CO2 gas detector uncertainty: Accuracy 2 uatm (include SST correction)
Standardization technique: Primary standards traceable to the WMO-X93 scale. Primary standards from NOAA calibrated in 2008
Standard gas manufacturer: Three CO2 calibration gases used every 5h to 7h. Manufacturer: Air Liquide.
Standard gas concentration: Pre and post-cruise Certified measurements at LSCE/IPSL : 279.31 ppm, 350.71 ppm, 489.94 ppm (Last certification, Jul-2017)
At what temperature was pCO2 reported: In situ sea surface temperature
Quality flag convention: 2 = good; 3 = questionable; 4 = bad; 9 = missing data.
Method reference: Poisson et al., 1993, JGR
Researcher name: Claire Lo Monaco
Researcher institution: Univ P et M Curie, France
Sea Surface Temperature
Abbreviation: SST_C
Unit: degrees celcius
Observation type: Surface Underway
Analyzing instrument: SBE38
Uncertainty: Accuracy 0.002 C
Researcher name: Claire Lo Monaco
Researcher institution: Univ P et M Curie, France
Sea Surface Salinity
Abbreviation: SSS
Observation type: Surface Underway
Analyzing instrument: SBE45,
Detailed sampling and analyzing information: Salinometer Guildline AUTOSAL and IAPSO standard / OSI) and to surface CTD data during the casts (SBE04 pre and post-cruise calibrated, IPEV)
Uncertainty: Accuracy 0.01
Researcher name: Claire Lo Monaco
Researcher institution: Univ P et M Curie, France
Barometreic pressure transducer
Abbreviation: AtmPrs
Unit: hPa
Observation type: Surface Underway
Analyzing instrument: Paroscientific, 1000-16B
Uncertainty: accuracy 0.08 hPa
Researcher name: Claire Lo Monaco
Researcher institution: Univ P et M Curie, France
Ship speed
Abbreviation: Ship speed
Unit: knots
Observation type: Underway
Ship Direction
Abbreviation: Ship Head
Unit: Degrees
Observation type: Underway

PUBLICATIONS DESCRIBING THIS DATASET:
none;
ADDITIONAL INFORMATION:
The OISO-27 data have been included in SOCAT data-base Version 6 (www.socat.info, Bakker et al., ESSD, 2016). Other OISO data (1998-2015) have been previously published (e.g. Metzl, DSR, 2009 and references therein; Lourantou and Metzl, GRL, 2011; Landschutzer et al., Science, 2015) and regularly included in Global Carbon budgets (Le Quéré et al., ESSD, 2018). Other informations also available at http://campagnes.flotteoceanographique.fr/series/228/
FUNDING AGENCY:
Centre National de la Recherche Scientifique (CNRS), L'Institut Polaire Francais Paul-Emile Victor (IPEV)
PROJECT TITLE: S.O. OISO
PROJECT ID:

SUBMITTED BY: Nicolas Metzl (nicolas.metzl@locean-ipsl.upmc.fr)

SUBMISSION DATE: 2018-04-03