INVESTIGATORS:
Andrew G. Dickson
- Scripps Institution of Oceanography (SIO)
James H. Swift
- Scripps Institution of Oceanography (SIO)
Lynne D. Talley
- University of Rhode Island; Graduate School of Oceanography (GSO)
PACKAGE DESCRIPTION: This dataset includes chemical, discrete sample, physical and profile data collected from KNORR in the South Pacific Ocean from 2005-08-21 to 2005-10-06 and retrieved during cruise CLIVAR_AAIW05. These data include ALKALINITY, CHLOROFLUOROCARBON-11 (CFC-11), CHLOROFLUOROCARBON-113 (CFC-113), CHLOROFLUOROCARBON-12 (CFC-12), Carbon tetrachloride (CCL4), DISSOLVED INORGANIC CARBON, DISSOLVED OXYGEN, HYDROSTATIC PRESSURE, NITRATE, NITRITE, PHOSPHATE, Partial pressure (or fugacity) of carbon dioxide, SALINITY, SILICATE, WATER TEMPERATURE and pH. The instruments used to collect these data include Alkalinity titrator, CTD, Coulometer for DIC measurement and bottle. These data were collected by Andrew Dickson, Lynne Talley and James Swift of Scripps Institution of Oceanography as part of the CLIVAR_AAIW05 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: Dickson, Andrew G.; Talley, Lynne D.; Swift, James H.; Chereskin, Teresa K.; Fine, Rana A. (2013). Partial pressure (or fugacity) of carbon dioxide, dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using Alkalinity titrator, CTD and other instruments from the KNORR in the South Pacific Ocean from 2005-08-21 to 2005-10-06 (NCEI Accession 0108071). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.clivar_aaiw05. Accessed [date].
DATA PACKAGES RELATED TO THIS ONE:
none;
IDENTIFICATION INFORMATION FOR THIS DATA PACKAGE:
NCEI ACCESSION: 0108071
NCEI DOI: https://doi.org/10.3334/cdiac/otg.clivar_aaiw05
EXPOCODE: CLIVAR_AAIW05;
CRUISE ID: CLIVAR_AAIW05;
SECTION/LEG: AAIW05;
TYPES OF STUDY: Discrete measurement;Profile;TEMPORAL COVERAGE:
START DATE: 2005-08-21
END DATE: 2005-10-06
SPATIAL COVERAGE:
WEST: -103.0888
EAST: -72.6826
GEOGRAPHIC NAMES: Pacific Ocean;
PLATFORMS: R/V Knorr (ID: 316N);
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: |
A control chart was prepared using the duplicate data as described in SOP 22 of the DOE handbook (Figure 4). The average non-absolute difference (2nd - 1st in the order of analysis) was 0.38 μmol kg-1 and the standard deviation was 1.2 μmol kg-1. The average value is statistically distinguishable from zero, where zero is the ideal result that would indicate all sources of error were random or independent of both time and the amount of carbon titrated within a given cell. It is thought that this error is related to the chemical evolution of the cell solutions with repeated titrations. However, since the exact nature of these cells’ chemistry is not well-understood, no correction was made to account for this observation. |
| Standardization description: |
A total of 2,935 CT analyses were made including: 1. 189 measurements of Certified Reference Materials (CRM Batch 71, CT 2032.85 ± 0.40 μmol kg-1). 2. 196 sets of duplicate measurements made on separate seawater samples collected from the same Niskin. 3. 86 measurements made on four separate batches of a reference material that were prepared at sea. 4. 25 rejected measurements of samples with known errors. 5. 2439 measurements of sample CT that are presented with quality control codes. |
| CRM batch number: |
71 |
| Total alkalinity |
|---|
| Abbreviation: |
TA |
| Observation type: |
discrete |
| In-situ / Manipulation / Response variable: |
In-situ observation |
| Measured or calculated: |
Measured |
| Type of titration: |
potentiometric titration |
| Cell type (open or closed): |
Open |
| Curve fitting method: |
Potentiometric, open-cell titration by coulometrically analyzed hydrochloric acid. |
| Uncertainty: |
The mean and standard deviation for all CRM analyses are 2056.3 ± 3.0 μmol/kg |
| Method reference: |
Dickson, A. G., Afghan, J.D., Anderson, G.C., 2003. Reference Materials for Oceanic CO2 analysis: a Method for the Certification of Total Alkalinity. Marine Chemistry 80, 185-197 |
| CTDTMP |
|---|
| Abbreviation: |
CTDTMP |
| Unit: |
DEG_C |
| Controlled vocabulary name: |
WATER TEMPERATURE |
| 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 |
| CTDSAL |
|---|
| Abbreviation: |
CTDSAL |
| 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 |
| 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 |
| CCL4 |
|---|
| Abbreviation: |
CCL4 |
| Unit: |
PMOL/KG |
| Controlled vocabulary name: |
Carbon tetrachloride (CCL4) |
| 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 |
PUBLICATIONS DESCRIBING THIS DATASET: none;
ADDITIONAL INFORMATION: none;
FUNDING AGENCY: NSF
PROJECT TITLE:
PROJECT ID:
SUBMITTED BY: Alex Kozyr (Alex.Kozyr@noaa.gov)
SUBMISSION DATE: 2013-06-05
