INVESTIGATORS:
James H. Swift
- Scripps Institution of Oceanography (SIO)
Sabine Mecking
- University of Washington; Applied Physics Laboratory (APL)
Craig A. Carlson
- University of California - Santa Barbara (UCSB)
Andrew G. Dickson
- Scripps Institution of Oceanography (SIO)
Richard A. Feely
- NOAA Pacific Marine Environmental Laboratory (PMEL)
PACKAGE DESCRIPTION: This dataset includes chemical, discrete sample, physical and profile data collected from MELVILLE in the North Pacific Ocean and Philippine Sea from 2013-03-21 to 2013-05-01. These data include CHLOROFLUOROCARBON-11 (CFC-11), CHLOROFLUOROCARBON-113 (CFC-113), CHLOROFLUOROCARBON-12 (CFC-12), DELTA CARBON-13, DELTA CARBON-14, DELTA HELIUM-3, DISSOLVED INORGANIC CARBON (DIC), DISSOLVED ORGANIC CARBON, DISSOLVED OXYGEN, HELIUM, HYDROSTATIC PRESSURE, NEON, NITRATE, NITRITE, Potential temperature (theta), SALINITY, SULFUR HEXAFLUORIDE (SF6), TOTAL ALKALINITY (TA), Total Dissolved Nitrogen (TDN), Tritium (Hydrogen isotope), WATER TEMPERATURE, pH, phosphate and silicate. The instruments used to collect these data include CTD and bottle.
These data were collected by Richard A. Feely of US DOC; NOAA; OAR; Pacific Marine Environmental Laboratory, James Swift and Andrew Dickson of University of California - San Diego; Scripps Institution of Oceanography, Craig A. Carlson of University of California - Santa Barbara and Sabine Mecking of University of Washington as part of the GOSHIP_P02_318M20130321 data set. CDIAC associated the following cruise ID(s) with this data set: GOSHIP_P02_318M20130321
CITE AS: Swift, James H.; Mecking, Sabine; Feely, Richard A.; Dickson, Andrew G.; Carlson, Craig A.; Jenkins, William J.; McNichol, Ann; Key, Robert M.; Ho, David T.; Sigman, Daniel; Macdonald, Alison M.; Buesseler, Ken O.; Martz, Todd R. (2014). Dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from MELVILLE in the North Pacific Ocean and Philippine Sea from 2013-03-21 to 2013-05-01 (NCEI Accession 0117338). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.goship_p02_318m20130321. Accessed [date].
DATA PACKAGES RELATED TO THIS ONE:
none;
IDENTIFICATION INFORMATION FOR THIS DATA PACKAGE:
NCEI ACCESSION: 0117338
NCEI DOI: https://doi.org/10.3334/cdiac/otg.goship_p02_318m20130321
EXPOCODE: 318M20130321;
CRUISE ID: GOSHIP_P02_318M20130321;
SECTION/LEG: GO-SHIP Repeat Section P02;
TYPES OF STUDY: Discrete measurement;Profile;TEMPORAL COVERAGE:
START DATE: 2013-03-21
END DATE: 2013-05-01
SPATIAL COVERAGE:
WEST: 133.0297
EAST: -117.3838
GEOGRAPHIC NAMES: Pacific Ocean;
PLATFORMS: R/V Melville (ID: 318M);
RESEARCH PROJECT(S):
none;
VARIABLES / PARAMETERS:
Dissolved Inorganic Carbon |
Abbreviation: |
DIC |
Observation type: |
discrete |
In-situ / Manipulation / Response variable: |
In-situ observation |
Measured or calculated: |
Calculated |
Replicate information: |
328 samples reported as duplicates. Average absolute difference from the mean = 0.61 |
Standardization description: |
1) Gas Calibation Loops (~1 and 2ml) w/ 99.999% pure CO2 using an 8 port valco 2) Certified Reference Materials |
CRM batch number: |
124 - certified value = 2015.72 |
Total alkalinity |
Abbreviation: |
TA |
Observation type: |
discrete |
In-situ / Manipulation / Response variable: |
In-situ observation |
Measured or calculated: |
Measured |
Type of titration: |
Two-state, open-cell, potentiometric titration with HCl (~0.1 mol/kg) in an NaCl background. |
Cell type (open or closed): |
open cell |
Curve fitting method: |
Non-linear least squares - see Dickson et al. (2007) |
TA blank correction: |
N/A |
Uncertainty: |
The repeatability (1 std. dev.) of ALK measurements (estimated from duplicate analyses of seawater) was 0.96 µmol/kg (307 pairs) Measurements of seawater reference materials throughout the cruise gave a result of 2214.66 ± 1.02 (389) µmol/kg - mean ± std. dev (n) As the certified value was 2215.08 ± 0.49 µmol/kg, no further adjustment was considered necessary. The overall standard uncertainty of these measurements is thus approximately 1.5 µmol/kg. |
Method reference: |
Dickson, Andrew G., Chris Sabine and James R. Christian, editors, "Guide to Best Practices for Ocean CO2 Measurements", Pices Special Publication 3, IOCCP Report No. 8, October 2007, SOP 3b, "Determination of total alkalinity in sea water using an open-cell titration" |
pH |
Abbreviation: |
pH |
pH scale: |
total hydrogen ion concentration (mol/kg-soln) |
Observation type: |
discrete |
In-situ / Manipulation / Response variable: |
In-situ observation |
Measured or calculated: |
Measured |
Temperature of pH measurement: |
25 DegC |
Detailed sampling and analyzing information: |
spectrophotometric determination using purified m-cresol purple |
Uncertainty: |
The repeatability (1 std. dev.) of pH measurements (estimated from duplicate analyses of seawater) was 0.0010 pH units (301 pairs). The standard deviation from measurements on seawater reference materials made throughout the cruise was 0.0014 pH units (n = 362). The overall standard uncertainty is harder to judge. Carter et al. (2013) estimated it as about 0.005, assuming an uncertainty contribution from the dye calibration equivalent to 0.004 in pH. I suspect it could be larger — we are working to better understand this. |
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 |
CTDOXY |
Abbreviation: |
CTDOXY |
Unit: |
UMOL/KG |
Controlled vocabulary name: |
DISSOLVED OXYGEN |
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 |
CFC-11 |
Abbreviation: |
CFC-11 |
Unit: |
PMOL/KG |
Controlled vocabulary name: |
CHLOROFLUOROCARBON-11 (CFC-11) |
In-situ / Manipulation / Response variable: |
in-situ |
CFC-12 |
Abbreviation: |
CFC-12 |
Unit: |
PMOL/KG |
Controlled vocabulary name: |
CHLOROFLUOROCARBON-12 (CFC-12) |
In-situ / Manipulation / Response variable: |
in-situ |
CFC113 |
Abbreviation: |
CFC113 |
Unit: |
PMOL/KG |
Controlled vocabulary name: |
CHLOROFLUOROCARBON-113 (CFC-113) |
In-situ / Manipulation / Response variable: |
in-situ |
SF6 |
Abbreviation: |
SF6 |
Unit: |
PPY |
Controlled vocabulary name: |
Sulfur Hexaflouride (SF6) |
In-situ / Manipulation / Response variable: |
in-situ |
TCARBN |
Abbreviation: |
TCARBN |
Unit: |
UMOL/KG |
Controlled vocabulary name: |
DISSOLVED INORGANIC CARBON (DIC) |
In-situ / Manipulation / Response variable: |
in-situ |
ALKALI |
Abbreviation: |
ALKALI |
Unit: |
UMOL/KG |
Controlled vocabulary name: |
total alkalinity |
In-situ / Manipulation / Response variable: |
in-situ |
PH_TOT |
Abbreviation: |
PH_TOT |
Unit: |
@25C |
Controlled vocabulary name: |
pH |
In-situ / Manipulation / Response variable: |
in-situ |
PH_TMP |
Abbreviation: |
PH_TMP |
Unit: |
DEG_C |
Controlled vocabulary name: |
pH |
In-situ / Manipulation / Response variable: |
in-situ |
DOC |
Abbreviation: |
DOC |
Unit: |
UMOL/KG |
Controlled vocabulary name: |
DISSOLVED ORGANIC CARBON |
In-situ / Manipulation / Response variable: |
in-situ |
TDN |
Abbreviation: |
TDN |
Unit: |
UMOL/KG |
Controlled vocabulary name: |
Total Dissolved Nitrogen (TDN) |
In-situ / Manipulation / Response variable: |
in-situ |
TRITUM |
Abbreviation: |
TRITUM |
Unit: |
TU |
Controlled vocabulary name: |
Tritium (Hydrogen isotope) |
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: 2014-03-25
REVISION DATE: 2017-01-30
PREVIOUS VERSIONS: Version 1.1Version 2.2