INVESTIGATORS:
Molly O. Baringer
- NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)
Richard A. Feely 
- NOAA Pacific Marine Environmental Laboratory (PMEL)
John L. Bullister
- NOAA Pacific Marine Environmental Laboratory (PMEL)
Frank J. Millero
- Rosenstiel School of Marine and Atmospheric Science (RSMAS)
Rik Wanninkhof
- NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML)
PACKAGE DESCRIPTION: This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, pH on seawater scale, partial pressure of carbon dioxide (pCO2), dissolved organic carbon (DOC), chlorofluorocarbons (CFC-11, CFC-12), temperature, salinity, dissolved oxygen, nutrients, sulfur hexafluoride (SF6), delta C13 and delta C14 obtained during NOAA Ship Ronald H. Brown cruise CLIVAR_A16N_2013 (EXPOCODE 33RO20130803) in the Atlantic Ocean from 2013-08-03 to 2013-10-01. 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: Baringer, Molly O.; Bullister, John L.; Feely, Richard A.; Wanninkhof, Rik; Millero, Frank J.; Hansell, Dennis A.; Zhang, Jia-Zhong; Mordy, Calvin; Langdon, Chris; Schlosser, Peter; Jenkins, William J.; McNichol, Ann; Key, Robert M. (2016). Dissolved inorganic carbon (DIC), total alkalinity, pH on seawater scale, partial pressure of carbon dioxide (pCO2), dissolved organic carbon (DOC), chlorofluorocarbons (CFC-11, CFC-12), temperature, salinity and other hydrographic and chemical variables collected from discrete samples and profile observations during NOAA Ship Ronald H. Brown cruise CLIVAR_A16N_2013 (EXPOCODE 33RO20130803) in the Atlantic Ocean from 2013-08-03 to 2013-10-01 (NCEI Accession 0157363). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.goship_a16n_2013. Accessed [date].
DATA PACKAGES RELATED TO THIS ONE:
IDENTIFICATION INFORMATION FOR THIS DATA PACKAGE:
NCEI ACCESSION: 0157363
NCEI DOI: https://doi.org/10.3334/cdiac/otg.goship_a16n_2013
EXPOCODE: 33RO20130803;
CRUISE ID: A16N_2013;
SECTION/LEG: A16N;
TYPES OF STUDY: Discrete measurement;Profile;TEMPORAL COVERAGE:
START DATE: 2013-08-03
END DATE: 2013-10-01
SPATIAL COVERAGE:
WEST: -29.0021
EAST: -19.9906
GEOGRAPHIC NAMES: Atlantic Ocean;
PLATFORMS: R/V Ronald H. Brown (ID: 33RO);
RESEARCH PROJECT(S):
none;
VARIABLES / PARAMETERS:
| Dissolved Inorganic Carbon |
|---|
| Abbreviation: |
TCARBN |
| Unit: |
UMOL/KG |
| Observation type: |
discrete |
| In-situ / Manipulation / Response variable: |
In-situ observation |
| Measured or calculated: |
Measured |
| Replicate information: |
1-3 replicates were drawn per station (usually 3) from the surface, bottom and ~ 1000 m depths. Average difference of replicates was 1.49 μmol/kg for AOML3 and 1.69 μmol/kg for AOML 4. |
| Standardization description: |
Injection of 2 pairs of sample loops of known volume of pure CO2 bracketing the expected values of TCO2 and analysis of Certified Reference Materials supplied by Dr. A Dickson of SIO. TCO2 values were corrected for the addition of mercuric chloride and for the offset from the CRM value. |
| CRM batch number: |
114, 129 |
| Total alkalinity |
|---|
| Abbreviation: |
ALKALI |
| Unit: |
UMOL/KG |
| Observation type: |
discrete |
| In-situ / Manipulation / Response variable: |
In-situ observation |
| Measured or calculated: |
Measured |
| Type of titration: |
potentiometric |
| Cell type (open or closed): |
closed cell |
| Curve fitting method: |
Levenberg-Marquardt nonlinear least-squares |
| Uncertainty: |
Accuracy +/- 2.2 μmol/kg based on CRM measurments (batches 114 and 129) Precision +/- 1.8 μmol/kg based on duplicate measurements |
| Method reference: |
Millero, F.J., J.-Z. Zhang, K, Lee, and D.M. Campbell, 1993: Titration alkalinity of seawater. Mar. Chem., 44, 153-165. |
| pH |
|---|
| Abbreviation: |
PH_SWS |
| pH scale: |
seawater |
| Observation type: |
discrete |
| In-situ / Manipulation / Response variable: |
In-situ observation |
| Measured or calculated: |
Measured |
| Temperature of pH measurement: |
25 |
| Detailed sampling and analyzing information: |
spectrophotometric using unpurified meta-cresol purple indicator |
| Uncertainty: |
accurracy: +/- 0.003 based on TRIS and CRM measurments Precision: 0.0018 based on duplicate measurements |
| pCO2 (fCO2) discrete |
|---|
| Abbreviation: |
fCO2 |
| Unit: |
UATM |
| Observation type: |
discrete |
| In-situ / Manipulation / Response variable: |
In-situ observation |
| Measured or calculated: |
Measured |
| Storage method: |
The 0.5 L "DIC" sample bottles were sealed with glass stoppers lightly covered with Apiezon-L grease and were stored at room temperature for a maximum of twelve hours prior to analysis. All samples were kept in a secondary bath at 20 ˚C (+/- 0.3 ˚C) for at least 2 hours prior to analysis. For analysis they were moved to the primary bath at 20 ˚C (+/- 0.03 ˚C). |
| Seawater volume: |
200 mL |
| Headspace volume: |
5 mL |
| Temperature of measurement: |
20 ˚C |
| Detailed sampling and analyzing information: |
Circulation of dried headspace sample gas through a non-dispersive infrared analyzer (Licor model 840). The system is a prototype built by Tim Newberger (NOAA/ESRL/CIRES) and supported by C. Sweeney and T. Takahashi. For further details see the cruise report at http://cchdo.ucsd.edu/cruise/33RO20130803 |
| Sample replicate information: |
Replicate samples were drawn from 52 Niskin bottles. |
| Temperature correction method: |
4.23%/˚C |
| Uncertainty: |
Accuracy estimated at 1% based on the uncertainty of the standards. Precision was 0.18% based on the analysis of 52 pairs of replicate samples. |
| Method reference: |
Chipman, D.W., J. Marra, and T. Takahashi, 1993: Primary production at 47°N and 20°W in the North Atlantic Ocean: A comparison between the 14C incubation method and mixed layer carbon budget observations. Deep-Sea Res., II, v. 40, pp. 151-169. Wanninkhof, R., and K. Thoning, 1993: Measurement of fugacity of CO2 in surface water using continuous and discrete sampling methods. Mar. Chem., v. 44, no. 2-4, pp. 189-205. Pierrot, D., C. Neill, K. Sullivan, R. Castle, R. Wanninkhof, H. Lüger, T. Johannessen, A. Olsen, R.A. Feely, C.E. Cosca, 2009: Recommendations for autonomous underway pCO2 measuring systems and data-reduction routines. Deep-Sea Res., II, v. 56, pp. 512-522. |
| 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 |
| SF6 |
|---|
| Abbreviation: |
SF6 |
| Unit: |
FMOL/KG |
| Controlled vocabulary name: |
Sulfur Hexaflouride (SF6) |
| In-situ / Manipulation / Response variable: |
in-situ |
| DELC14 |
|---|
| Abbreviation: |
Delta C14 |
| Unit: |
o/oo |
| Controlled vocabulary name: |
Delta C14 |
| In-situ / Manipulation / Response variable: |
in-situ |
| DELC13 |
|---|
| Abbreviation: |
Delta C13 |
| Unit: |
o/o |
| Controlled vocabulary name: |
Delta C13 |
| In-situ / Manipulation / Response variable: |
in-situ |
| PCO2_TMP |
|---|
| Abbreviation: |
PCO2_TMP |
| Unit: |
DEG_C |
| Controlled vocabulary name: |
partial pressure of carbon dioxide - water |
| 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 |
PUBLICATIONS DESCRIBING THIS DATASET: none;
ADDITIONAL INFORMATION: none;
FUNDING AGENCY: NOAA
PROJECT TITLE:
PROJECT ID:
SUBMITTED BY: Alex Kozyr (Alex.Kozyr@noaa.gov)
SUBMISSION DATE: 2016-12-09
REVISION DATE: 2018-12-20
PREVIOUS VERSIONS: Version 1.1
