INVESTIGATORS:
Kumiko Azetsu-Scott 
- Bedford Institute of Oceanography (BIO)
Igor Yashayaev
- Bedford Institute of Oceanography (BIO)
PACKAGE DESCRIPTION: This dataset includes chemical, discrete sample, physical and profile data collected from HUDSON in the Davis Strait, Labrador Sea and North Atlantic Ocean from 2015-05-04 to 2015-05-24. 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, bottle and spectrophotometer.
These data were collected by Dr. Kumiko Azetsu-Scott and Igor Yashayaev of Bedford Institute of Oceanography as part of the GOSHIP_AR07W_2015 data set. CDIAC associated the following cruise ID(s) with this data set: HUD2015-006
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: Azetsu-Scott, Kumiko; Yashayaev, Igor (2017). 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, Labrador Sea and North Atlantic Ocean from 2015-05-04 to 2015-05-24 (NCEI Accession 0160487). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.goship_ar07w_2015. Accessed [date].
DATA PACKAGES RELATED TO THIS ONE:
none;
IDENTIFICATION INFORMATION FOR THIS DATA PACKAGE:
NCEI ACCESSION: 0160487
NCEI DOI: https://doi.org/10.3334/cdiac/otg.goship_ar07w_2015
EXPOCODE: 18HU20150504;
CRUISE ID: HUD2015-006;
SECTION/LEG: GOSHIP_AR07W_2015;
TYPES OF STUDY: Discrete measurement;Profile;TEMPORAL COVERAGE:
START DATE: 2015-05-04
END DATE: 2015-05-24
SPATIAL COVERAGE:
WEST: -63.3158
EAST: -48.2295
GEOGRAPHIC NAMES: Labrador Sea;
PLATFORMS: CCGS 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 |
| Replicate information: |
no replicate |
| Standardization description: |
TIC was later determined using gas extraction and coulometric titration with photometric endpoint detection (Johnson, et al., 1985). |
| CRM batch number: |
batch # 134 for the entire cruise |
| Total alkalinity |
|---|
| Abbreviation: |
TA |
| Observation type: |
discrete |
| In-situ / Manipulation / Response variable: |
In-situ observation |
| Measured or calculated: |
Measured |
| Cell type (open or closed): |
open cell |
| Curve fitting method: |
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. |
| pH |
|---|
| Abbreviation: |
pH |
| pH scale: |
total |
| 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: |
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 purified 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. Measurements were conducted during both night and day shifts and samples were stored in a low temperature incubator at 4 degree C until immediately prior to analysis. The maximum time between sampling and analysis was about 4 hours. |
| Uncertainty: |
0.002 |
| 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 |
| OXUGEN |
|---|
| Abbreviation: |
OXUGEN |
| 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: |
total hydrogen ion concentration at 25 °C |
| 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: DFO, Canada
PROJECT TITLE:
PROJECT ID:
SUBMITTED BY: Alex Kozyr (Alex.Kozyr@noaa.gov)
SUBMISSION DATE: 2017-02-18
