INVESTIGATORS:
Igor Yashayaev
- Bedford Institute of Oceanography (BIO)
Kumiko Azetsu-Scott
- Bedford Institute of Oceanography (BIO)
PACKAGE DESCRIPTION: This dataset includes discrete sample and profile data collected from HUDSON in the Davis Strait, Gulf of St. Lawrence, Labrador Sea and North Atlantic Ocean from 2013-05-07 to 2013-05-28. These data include AMMONIUM (NH4), CHLOROFLUOROCARBON-12 (CFC-12), DISSOLVED INORGANIC CARBON (DIC), DISSOLVED OXYGEN, HYDROSTATIC PRESSURE, NITRATE, NITRITE, SALINITY, SULFUR HEXAFLUORIDE (SF6), TOTAL ALKALINITY (TA), WATER TEMPERATURE, pH, phosphate and silicate. The instruments used to collect these data include Alkalinity titrator, CTD, Coulometer for DIC measurement and bottle.
These data were collected by Igor Yashayaev and Kumiko Azetsu-Scott of Bedford Institute of Oceanography as part of the CLIVAR_AR07W_2013 data set. CDIAC associated the following cruise ID(s) with this data set: CLIVAR_AR07W_2013
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.
The World Ocean Circulation Experiment (WOCE) was a major component of the World Climate Research Program with the overall goal of better understanding the ocean's role in climate and climatic changes resulting from both natural and anthropogenic causes. The CO2 survey took advantage of the sampling opportunities provided by the WOCE Hydrographic Program (WHP) cruises during this period between 1990 and 1998. The final collection covers approximately 23,000 stations from 94 WOCE cruises.
CITE AS: Azetsu-Scott, Kumiko; Yashayaev, Igor (2016). 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 HUDSON in the Davis Strait, Gulf of St. Lawrence and others from 2013-05-07 to 2013-05-28 (NCEI Accession 0144303). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.clivar_ar07w_2013. Accessed [date].
DATA PACKAGES RELATED TO THIS ONE:
none;
IDENTIFICATION INFORMATION FOR THIS DATA PACKAGE:
NCEI ACCESSION: 0144303
NCEI DOI: https://doi.org/10.3334/cdiac/otg.clivar_ar07w_2013
EXPOCODE: 18HU20130507;
CRUISE ID: CLIVAR_AR07W_2013;
SECTION/LEG: AR07W_2013;
TYPES OF STUDY: Discrete measurement;Profile;TEMPORAL COVERAGE:
START DATE: 2013-05-07
END DATE: 2013-05-28
SPATIAL COVERAGE:
WEST: -63.4488
EAST: -48.2287
GEOGRAPHIC NAMES: Atlantic Ocean;
PLATFORMS: R/V Hudson (ID: 18HU);
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 |
Detailed sampling and analyzing information: |
Seawater samples were collected in 500 mL borosilicate glass bottles and analyzed for TIC followed by TA typically within 12 hours of collection following the methods prescribed in “Guide to best practises for ocean CO2 measurements”. TIC was determined using gas extraction and coulometric titration with photometric endpoint detection (Johnson, et al., 1985). Total alkalinity was measured by open-cell potentiometric titration with full curve Gran Point determination using a Titrando dosimat with Tiamo software in conjunction with a sample delivery system built in-house. Bottles of Batch 126 Certified Reference Material (CRM) (supplied by Professor Andrew Dickson, Scripps Institution of Oceanography, San Diego, USA) were analyzed in duplicate at intervals to evaluate accuracy |
Total alkalinity |
Abbreviation: |
TA |
Observation type: |
discrete |
In-situ / Manipulation / Response variable: |
In-situ observation |
Measured or calculated: |
Measured |
Curve fitting method: |
Seawater samples were collected in 500 mL borosilicate glass bottles and analyzed for TIC followed by TA typically within 12 hours of collection following the methods prescribed in “Guide to best practises for ocean CO2 measurements”. TIC was determined using gas extraction and coulometric titration with photometric endpoint detection (Johnson, et al., 1985). Total alkalinity was measured by open-cell potentiometric titration with full curve Gran Point determination using a Titrando dosimat with Tiamo software in conjunction with a sample delivery system built in-house. Bottles of Batch 126 Certified Reference Material (CRM) (supplied by Professor Andrew Dickson, Scripps Institution of Oceanography, San Diego, USA) were analyzed in duplicate at intervals to evaluate accuracy |
pH |
Abbreviation: |
pH |
pH scale: |
Total Scale |
Observation type: |
discrete |
In-situ / Manipulation / Response variable: |
In-situ observation |
Measured or calculated: |
Measured |
Detailed sampling and analyzing information: |
Seawater was analysed for pH according to the spectrophotometric method described in “Guide to best practises for ocean CO2 measurements” SOP 6B, edited by Andrew Dickson. Water was collected from the rosette in 60 mL borosilicate glass tubes, allowing each sample to overflow by at least one volume. Racks of tubes were then placed in a water bath held at 25 °C and allowed to thermally equilibrate for 30 minutes. Each sample was then introduced into a water-jacketed 10 cm quartz cell and 30 µL of the indicator dye m-cresol purple added before mixing well. The absorbance of light at the wavelengths 434 and 578 nm was measured with an Agilent photodiode array spectrophotometer and the resulting extinction coefficients at these wavelengths were used to determine the pH of the sample. The sample absorption spectra were not referenced to a Certified Reference Material as in the past due to the current unavailability of these CRMs. |
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 |
NH4 |
Abbreviation: |
NH4 |
Unit: |
UMOL/KG |
Controlled vocabulary name: |
AMMONIUM (NH4) |
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 |
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 |
PUBLICATIONS DESCRIBING THIS DATASET: none;
ADDITIONAL INFORMATION: none;
FUNDING AGENCY:
SUBMITTED BY: Alex Kozyr (Alex.Kozyr@noaa.gov)
SUBMISSION DATE: 2016-02-25