pH (on total scale) and other variables collected from surface underway observations using Durafet pH electrode and Chloride Ion Selective Electrode and other instruments from NOAA Ship Ronald H. Brown in the North Atlantic Ocean and South Atlantic Ocean from during the CLIVAR/GO-SHIP Repeat Section A13.5_2010 (EXPOCODE 33RO20100308) from 2010-03-08 to 2010-04-17 (NCEI Accession 0162231)
- Monterey Bay Aquarium Research Institute (MBARI)
- Scripps Institution of Oceanography (SIO)PACKAGE DESCRIPTION: This dataset consists of the surface measurements of temperature, salinity and pH on the total scale. An automated underway pH system was operated in the hydro lab of NOAA Ship Ronald H. Brown during the CLIVAR/GO-SHIP cruise on the Repeat Section A13.5_2010 (EXPOCODE 33RO20100308) in the North Atlantic Ocean and South Atlantic Ocean from from 2010-03-08 to 2010-04-17.
CITE AS: Takeshita, Yuichiro; Martz, Todd R. (2017). pH (on total scale) and other variables collected from surface underway observations using Durafet pH electrode and Chloride Ion Selective Electrode and other instruments from NOAA Ship Ronald H. Brown in the North Atlantic Ocean and South Atlantic Ocean from during the CLIVAR/GO-SHIP Repeat Section A13.5_2010 (EXPOCODE 33RO20100308) from 2010-03-08 to 2010-04-17 (NCEI Accession 0162231). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5xk8crs. Accessed [date].
none;
Surface underway;
TEMPORAL COVERAGE:
SPATIAL COVERAGE:
GEOGRAPHIC NAMES:
PLATFORMS:
RESEARCH PROJECT(S):
VARIABLES / PARAMETERS:
| pH | |
|---|---|
| Abbreviation: | pH_EXT_TOT_AT_SST |
| pH scale: | Total |
| Observation type: | Surface Underway |
| Measured or calculated: | Measured |
| Sampling instrument: | Ship Underway system |
| Analyzing instrument: | Honeywell Durafet III pH electrode and Orion Chloride Ion Selective Electrode |
| Temperature of pH measurement: | in-situ |
| Detailed sampling and analyzing information: | Please refer to the separately uploaded methods description file A13_5_underway_pH_2010_methods.pdf. |
| Temperature correction method: | CO2SYS, using pH and TA (estimated from sea surface temperautre and salinity) as inputs, and equilibrium constants from [Mehrbach et al. 1973] refit by [Dickson and Millero, 1987] |
| At what temperature was pH reported: | at SST |
| Uncertainty: | Accuracy: 0.007; Short term precision (hours): 0.0005; Long term precision (weeks): 0.004 |
| Method reference: | Martz, T. R., J. G. Connery, and K. S. Johnson (2010), Testing the Honeywell Durafet for seawater pH applications, Limnol. Oceanogr. Methods, 8, 172-184, https://doi.org/10.4319/lom.2010.8.172. |
| Researcher name: | Yuichiro Takeshita |
| Researcher institution: | Monterey Bay Aquarium Research Institute |
| Sea Surface Temperature | |
|---|---|
| Abbreviation: | SEA_SURFACE_TEMPERATURE_C |
| Unit: | Deg_C |
| Observation type: | Surface underway |
| Sampling instrument: | Ship's Underway system |
| Analyzing instrument: | SBE58 |
| Detailed sampling and analyzing information: | The SST temperature measurements are from the Seabird 21 TSG, which is immersed in the instrument chest of the ship in the bow thruster space. SST data were interpolated from the underway fCO2 dataset to the timestamp of the pH sensor |
| Uncertainty: | Factory calibraiton better than 0.01 C; not verified on cruise |
| Researcher name: | Rik Wanninkhof |
| Researcher institution: | NOAA/AOML |
| Sea Surface Salinity | |
|---|---|
| Abbreviation: | SALINITY_PSS_78 |
| Unit: | PSS78 |
| Observation type: | Surface underway |
| Sampling instrument: | Ship's Underway system |
| Analyzing instrument: | SBE45 |
| Detailed sampling and analyzing information: | The salinity measurements are from the Seabird 45 Micro TSG in the underway fCO2 system. Salinity data were interpolated from the underway fCO2 dataset to the timestamp of the pH sensor |
| Uncertainty: | Better than 0.1, based on comparisons to surface bottle salinity measurements (n = 129) |
| Researcher name: | Rik Wanninkhof |
| Researcher institution: | NOAA/AOML |
SUBMITTED BY: Yuichiro Takeshita (yui@mbari.org)
SUBMISSION DATE: 2017-03-20
