Discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity (TALK), temperature, salinity and other parameters during the R/V L'Atalante "Oligotrophy from Ultra-oligoTrophy PACific Experiment" (OUTPACE) cruise (EXPOCODE 35A320150218) in the South Pacific Ocean from 2015-02-18 to 2015-04-03 (NCEI Accession 0177706)
PACKAGE DESCRIPTION: This dataset consists of discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity (TALK), temperature, salinity, oxygen and nutrients during the R/V L'Atalante Oligotrophy from Ultra-oligoTrophy PACific Experiment (OUTPACE) cruise (EXPOCODE 35A320150218) in the South Pacific Ocean from 2015-02-18 to 2015-04-03. The main focus of the OUTPACE cruise was to study the complex interactions between planktonic organisms and the cycle of biogenic elements on different scales, motivated by the fact that the WTSP has been identified as a hot spot of N2 fixation (Bonnet et al., 2017). The data presented here have been collected in the western tropical South Pacific along a longitudinal 4000 km transect between the Melanesian Archipelago and the western part of the South Pacific gyre mostly between the surface and 2000 m depth. The OUTPACE transect is close to existing WOCE and GO-SHIP lines in the South Pacific: it is parallel to the zonal P21 line (18S) and the P06 line (32S).
CITE AS: Wagener, Thibaut; Metzl, Nicolas; Caffin, Matthieu; Fin, Jonathan; Helias Nunige, Sandra; Lefèvre, Dominique; Lo Monaco, Claire; Rougier, Gilles; Moutin, Thierry (2018). Discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity (TALK), temperature, salinity and other parameters during the R/V L'Atalante "Oligotrophy from Ultra-oligoTrophy PACific Experiment" (OUTPACE) cruise (EXPOCODE 35A320150218) in the South Pacific Ocean from 2015-02-18 to 2015-04-03 (NCEI Accession 0177706). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/wbkb-0q19. Accessed [date].
Discrete measurement;Profile;
TEMPORAL COVERAGE:
SPATIAL COVERAGE:
GEOGRAPHIC NAMES:
PLATFORMS:
RESEARCH PROJECT(S):
VARIABLES / PARAMETERS:
Dissolved Inorganic Carbon | |
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Abbreviation: | DIC_UMOL_KG |
Unit: | µmol/kg |
Observation type: | Profile |
Measured or calculated: | Measured |
Sampling instrument: | Niskin Bottle |
Analyzing instrument: | Potentiometric method |
Detailed sampling and analyzing information: | CTD Rosette sampling with niskin bottles. Storage of the samples at 4°C in Borosilicate 500mL flask. Potentiometric titration (Edmond, 1970) closed cell (Laboratory home-made), calculations DOE (1994) |
Replicate information: | Mean replicate for surface samples (12): 3.7 µmol/kg |
Standardization description: | Regular measurements of CRM |
Standardization frequency: | Every 15 to 20 sample |
CRM manufacturer: | Univ California San Diego, SIO, A. Dickson |
CRM batch number: | 139 |
Preservation method: | HgCl2 Saturated |
Preservative volume: | 0,2mL per 500 mL sample |
Preservative correction: | No correction |
Uncertainty: | +/- 5 µmol/kg |
Quality flag convention: | WOCE/GLODAP (2 Acceptable, 3 Questionnable, 4 Bad, 9 No data) |
Method reference: | Dickson, A.: An exact definition of total alkalinity and a procedure for the estimation of alkalinity and total inorganic carbon from titration data, Deep Sea Research Part A. Oceanographic Research Papers, 28, 609-623, https://doi.org/10.1016/0198-0149(81)90121-7, 1981. Dickson, A. and Goyet, C., eds.: Handbook of methods for the analysis of the various parameters of the carbon dioxide system in sea water; version 2, no. no. 74 in ORNL/CDIAC-74, US Departement of Energy, 1994. |
Researcher name: | Thibaut Wagener |
Researcher institution: | MIO - Institut Méditerranéen d’Océanologie, France |
Total alkalinity | |
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Abbreviation: | TA_UMOL_KG |
Unit: | µmol/kg |
Observation type: | Discrete profile |
Measured or calculated: | Measured |
Sampling instrument: | Niskin Bottle |
Analyzing instrument: | Potentiometric titration |
Type of titration: | Potentiometric titration |
Cell type (open or closed): | Closed (Laboratory Home-made) |
Curve fitting method: | DOE (1994) |
Detailed sampling and analyzing information: | CTD Rosette sampling with niskin bottles. Storage of the samples at 4°C in Borosilicate 500mL flask. Potentiometric titration (Edmond, 1970) closed cell (Laboratory home-made), calculations DOE (1994) |
Replicate information: | Mean replicate for surface samples (12): 3.6 µmol/kg |
Standardization description: | Regular measurements of CRM |
Standardization frequency: | Every 15 to 20 sample |
CRM manufacturer: | Univ California San Diego, SIO, A. Dickson |
CRM batch number: | 139 |
Preservation method: | HgCl2 Saturated |
Preservative volume: | 0,2mL per 500 mL sample |
Preservative correction: | No correction |
Uncertainty: | 5 µmol/kg |
Quality flag convention: | WOCE/GLODAP (2 Acceptable, 3 Questionnable, 4 Bad, 9 No data) |
Method reference: | Dickson, A.: An exact definition of total alkalinity and a procedure for the estimation of alkalinity and total inorganic carbon from titration data, Deep Sea Research Part A. Oceanographic Research Papers, 28, 609-623, https://doi.org/10.1016/0198-0149(81)90121-7, 1981. Dickson, A. and Goyet, C., eds.: Handbook of methods for the analysis of the various parameters of the carbon dioxide system in sea water; version 2, no. no. 74 in ORNL/CDIAC-74, US Departement of Energy, 1994. |
Researcher name: | Thibaut Wagener |
Researcher institution: | MIO - Institut Méditerranéen d’Océanologie, France |
Dissolved Oxygen | |
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Abbreviation: | OXYGEN_UMOL_KG |
Unit: | umol/kg |
Observation type: | Profile discrete |
Sampling instrument: | Niskin Bottles |
Analyzing instrument: | Winkler Titration with potentiometric end point detection. |
Replicate information: | Mean replicate for surface samples (15): 0,8 µmol/kg |
Uncertainty: | 1 µmol/kg |
Quality flag convention: | WOCE/GLODAP (2 Acceptable, 3 Questionnable, 4 Bad, 9 No data) |
Method reference: | Oudot, C., Gerard, R., Morin, P., and Gningue, I.: Precise shipboard determination of dissolved oxygen (Winkler procedure) for productivity studies with a commercial system1, Limnology and Oceanography, 33, 146-150, https://doi.org/10.4319/lo.1988.33.1.0146, 1988. |
Researcher name: | Dominique Lefevre |
Researcher institution: | MIO - Institut Méditerranéen d’Océanologie |
Nutrients | |
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Abbreviation: | NITRATE_UMOL_KG; NITRITE_UMOL_KG; SILICATE_UMOL_KG; PHOSPHATE_UMOL_KG |
Unit: | umol/kg |
Observation type: | Discrete profile |
Sampling instrument: | Niskin Bottles |
Analyzing instrument: | SEAL Analitical AA3HR auto analyzer - Continuous flow with spectrophotometric detection. |
Uncertainty: | 0.05 µmol/kg |
Quality flag convention: | WOCE/GLODAP (2 Acceptable, 3 Questionnable, 4 Bad, 9 No data) |
Method reference: | Aminot, A., Kérouel, R. : Dosage automatique des nutriments dans les eaux marines : méthodes en flux continu, Ed. Ifremer, Méthodes d’analyse en milieu marin, 188p, 2007 |
Researcher name: | Olivier Grosso |
Researcher institution: | MIO - Institut Méditerranéen d’Océanologie |
CTD Temperature | |
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Abbreviation: | CTDTMP_ITS90_DEG_C |
Unit: | Deg. C |
Observation type: | In-situ temperature recorded from CTD with the scale of ITS-90. |
Sampling instrument: | Seawater pump |
Analyzing instrument: | SBE911+ |
Uncertainty: | 0,001 °C |
Quality flag convention: | WOCE/GLODAP (2 Acceptable, 3 Questionnable, 4 Bad, 9 No data) |
Researcher name: | Thierry Moutin |
Researcher institution: | MIO - Institut Méditerranéen d’Océanologie |
CTD Salinity | |
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Abbreviation: | CTDSAL_PSS78 |
Observation type: | Profile |
Sampling instrument: | CTD Sensor |
Analyzing instrument: | SBE4C |
Detailed sampling and analyzing information: | Measure of conductivity and Practical salinity is derived from conductivity, temperature and pressure with the EPS-78 algorithm |
Uncertainty: | 0.001 on EPS78 scale |
Quality flag convention: | WOCE/GLODAP (2 Acceptable, 3 Questionnable, 4 Bad, 9 No data) |
Researcher name: | Thierry Moutin |
Researcher institution: | MIO - Institut Méditerranéen d’Océanologie |
CTD Oxygen | |
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Abbreviation: | CTDOXY_UMOL_KG |
Observation type: | Profile |
Sampling instrument: | CTD Sensor |
Analyzing instrument: | SBE4C |
Detailed sampling and analyzing information: | Data were adjusted with the concentrations estimated with the Winkler method on samples collected at the closure of the bottles (OXYGEN_UMOL_Kgf) following the GO-SHIP |
Uncertainty: | 2 µmol/kg |
Quality flag convention: | WOCE/GLODAP (2 Acceptable, 3 Questionnable, 4 Bad, 9 No data) |
Researcher name: | Dominique Lefevre |
Researcher institution: | MIO - Institut Méditerranéen d’Océanologie |
SUBMITTED BY: Thierry Moutin (thierry.moutin@mio.osupytheas.fr)
SUBMISSION DATE: 2018-10-08
REVISION DATE: 2018-11-09
PREVIOUS VERSIONS: Version 1.1