gov.noaa.nodc:0168767
eng
utf8
dataset
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
https://www.ncei.noaa.gov/contact
HTTPS
NOAA Contact Information
Information for contacts at NCEI.
information
custodian
2024-03-08T13:15:46Z
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Measurements of pH, dissolved inorganic carbon, total alkalinity and other variables for the assessment of the suitability of Durafet-based sensors for pH measurement in dynamic estuarine environments (Delaware Bay) from 2016-05-09 to 2016-08-24 (NCEI Accession 0168767)
2017-12-12
publication
International DOI Foundation (IDF)
10.7289/v5zp44d7
NOAA National Centers for Environmental Information
gov.noaa.nodc:0168767
NCEI Archive Management System
0168767
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
https://www.ncei.noaa.gov/contact
HTTPS
NCEI Contact Information
Information for contacts at NCEI.
information
publisher
Wei-Jun Cai
University of Delaware
wcai@udel.edu
http://www.udel.edu/
HTTP
University of Delaware website
Institution web page
information
resourceProvider
University of Delaware
http://www.udel.edu/
HTTP
University of Delaware website
Institution web page
information
resourceProvider
Wei-Jun Cai
University of Delaware
wcai@udel.edu
http://www.udel.edu/
HTTP
University of Delaware website
Institution web page
information
principalInvestigator
Stephen F. Gonski
University of Delaware; College of Earth, Ocean, and Environment; School of Marine Science and Policy
stephen.gonski@ucalgary.ca
principalInvestigator
Gonski, Stephen F.
University of Delaware; College of Earth, Ocean, and Environment; School of Marine Science and Policy
author
Cai, Wei-Jun
University of Delaware
http://www.udel.edu/
HTTP
University of Delaware website
Institution web page
information
author
Ullman, William J.
author
Joesoef, Andrew A.
University of Delaware; College of Earth, Ocean, and Environment; School of Marine Science and Policy
ajoesoef@udel.edu
http://www.ceoe.udel.edu/schools-departments/school-of-marine-science-and-policy
HTTP
University of Delaware; College of Earth, Ocean, and Environment; School of Marine Science and Policy website
Institution web page
information
author
Main, Christopher R.
author
Pettay, Daniel T.
author
Martz, Todd R.
author
University of Delaware
http://www.udel.edu/
HTTP
University of Delaware website
Institution web page
information
contributor
tableDigital
This dataset includes measurements of sea surface temperature, salinity, dissolved inorganic carbon, total alkalinity, pH_NBS and Colored Dissolved Organic Matter (CDOM) from time series stations in Delaware Bay from 2016-05-09 to 2016-08-24. In the environment of the Murderkill Estuary and Delaware Bay (Delaware, USA), the Honeywell Durafet proved capable of making high-resolution and high-frequency pH measurements on the total scale between pH 6.8 and 8.4. Natural pH fluctuations of >1 pH were routinely captured over a range of timescales. The experiment demonstrated the viability of the Honeywell Durafet to the measurement of pH to within the weather-level precision defined by the Global Ocean Acidification Observing Network (GOA-ON, less than 0.02 pH) as a part of future estuarine CO2 chemistry studies undertaken in dynamic environments.
To assess the performance of the Honeywell Durafet for pH measurement in estuaries with broad salinity ranges and wide ranges of time-varying salinities.
Funding Information: University of Delaware Provost's Office and the College of Earth (Delaware Sea Grant award (HCE-23), SMSP175136)
completed
historicalArchive
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
https://www.ncei.noaa.gov/contact
HTTPS
NCEI Contact Information
Information for contacts at NCEI.
information
pointOfContact
asNeeded
https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0168767
Preview graphic
PNG
0168767
NCEI ACCESSION NUMBER
2017-11-15
publication
DISSOLVED INORGANIC CARBON (DIC)
pH
total alkalinity
theme
NODC DATA TYPES THESAURUS
coulometer for DIC measurement
pH sensor
titrator
instrument
NODC INSTRUMENT TYPES THESAURUS
chemical
discrete sample
physical
surface measurements
theme
NODC OBSERVATION TYPES THESAURUS
University of Delaware
dataCentre
NODC COLLECTING INSTITUTION NAMES THESAURUS
University of Delaware
dataCentre
NODC SUBMITTING INSTITUTION NAMES THESAURUS
Delaware Bay
place
NODC SEA AREA NAMES THESAURUS
oceanography
theme
WMO_CategoryCode
2012-09-15
publication
39N75WDE20160509
project
Cruise ID
39N75WDE20160509
project
EXPOCODE
Ocean Carbon and Acidification Data System (OCADS) Project
project
Ocean Acidification Search Keywords
EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY
EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON
EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH
theme
Global Change Master Directory (GCMD) Science Keywords
2023
revision
17
Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)
Greenbelt
MD
https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
HTTPS
GCMD Keyword Forum Page
Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 17. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords
information
custodian
Surface measurement
Time series
theme
OCADS Study Type
39N75WDE20160509
theme
Provider Keywords
CDOM
Conductivity
DIC
DOC
Del_TA
Del_pH_INT-EXT
Del_pH_scales
E0ext25
E0int25
Eext
Eint
Pressure
SST
Salinity
Total Alkalinity
pH Ext Raw
pH Int Raw
pH^Cond_DIC-TA
pH^EXT_final,1
pH^EXT_final,1A
pH^EXT_final,1B
pH^EXT_final,2
pH^EXT_final,2A
pH^EXT_final,2B
pH^INT_final,1
pH^INT_final,2
pH^disc_DIC-TA
pH^disc_elec
pH_field_NBS
theme
Provider Variable Abbreviations
COULOMETERS
PH METERS > PH METERS
instrument
Global Change Master Directory (GCMD) Instrument Keywords
2023
revision
17
Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)
Greenbelt
MD
https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
HTTPS
GCMD Keyword Forum Page
Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 17. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords
information
custodian
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
place
Global Change Master Directory (GCMD) Location Keywords
2023
revision
17
Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)
Greenbelt
MD
https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
HTTPS
GCMD Keyword Forum Page
Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 17. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords
information
custodian
Delaware Bay
place
Provider Geographic Names
accessLevel: Public
otherRestrictions
Cite as: Gonski, Stephen F.; Cai, Wei-Jun; Ullman, William J.; Joesoef, Andrew A.; Main, Christopher R.; Pettay, Daniel T.; Martz, Todd R. (2017). Measurements of pH, dissolved inorganic carbon, total alkalinity and other variables for the assessment of the suitability of Durafet-based sensors for pH measurement in dynamic estuarine environments (Delaware Bay) from 2016-05-09 to 2016-08-24 (NCEI Accession 0168767). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5zp44d7. Accessed [date].
Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
otherRestrictions
Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Gonski, S. F., Cai, W.-J., Ullman, W. J., Joesoef, A., Main., C. R., Pettay, D. T., and Martz, T. R. (2017). Assessment of the suitability of Durafet-based sensors for pH measurement in dynamic estuarine environments. Estuarine, Coastal, and Shelf Science, 200, 152-168.
2017
publication
crossReference
project
Voynova, Y. G., Lebaron, K. C., Barnes, R. T., and Ullman, W. J. (2015). In situ response of bay productivity to nutrient loading from a small tributary: The Delaware Bay-Murderkill Estuary tidally-coupled biogeochemical reactor. Estuarine, Coastal, and Shelf Science, 160, 33-48.
2015
publication
crossReference
project
NOAA National Centers for Environmental Information (2022). Ocean Carbon and Acidification Data System (OCADS). NOAA National Centers for Environmental Information. https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
2022-04
publication
https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
HTTPS
https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
OCADS website
information
NOAA National Centers for Environmental Information
author
US DOC; NOAA; NESDIS; National Centers for Environmental Information (NCEI)
publisher
documentDigital
[accessed 2024-02-08]
crossReference
program
eng; USA
utf8
environment
oceans
-75.39
-75.39
39.05
39.05
2016-05-09
2016-08-24
NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
pointOfContact
In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Contact NCEI for other distribution options and instructions.
Originator data format
2.692
https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0168767.html
HTTPS
Web browser
Project Metadata
Navigate directly to the URL for a descriptive web page with download links.
information
https://doi.org/10.7289/v5zp44d7
HTTPS
Web browser
NCEI Dataset Landing Page
Navigate directly to the URL for a descriptive web page with download links.
information
https://www.ncei.noaa.gov/archive/accession/oas/168767
HTTPS
Web browser
Descriptive Information
Navigate directly to the URL for a descriptive web page with download links.
information
https://www.ncei.noaa.gov/archive/accession/download/168767
HTTPS
Web browser
HTTPS
Navigate directly to the URL for data access and direct download.
download
ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0114/0168767/
FTP
Any FTP client
FTP
These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).
download
dataset
NCEI Accession 0168767 v1.1 was published.
2017-12-12T02:45:05Z
NCEI Accession 0168767 v1.1
publication
https://www.ncei.noaa.gov/archive/accession/0168767/1.1
HTTPS
NCEI Accession 0168767 v1.1
published 2017-12-12T02:45:05Z
download
dataset
Parameter or Variable: Dissolved Inorganic Carbon;
Abbreviation: DIC;
Unit: umol kg-1;
Measured or calculated: Measured;
Analyzing instrument: Apollo SciTech AS-C3;
Preservation method: sat. HgCl2;
Preservative volume: 100 uL per 250 mL;
Uncertainty: less than 2.2 umol kg-1;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Total alkalinity;
Abbreviation: Total Alkalinity;
Unit: umol kg-1;
Measured or calculated: Measured;
Analyzing instrument: Apollo SciTech AS-ALK2;
Preservation method: sat. HgCl2;
Preservative volume: 100 uL per 250 mL;
Uncertainty: less than 2.2 umol kg-1;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: pH;
Abbreviation: pH_field_NBS;
pH scale: NBS Scale;
Measured or calculated: Measured;
Analyzing instrument: Orion Dual Star pH/ISE Benchtop Meter equipped with an Orion 8302BNUMD Ross Ultra Glass Triode pH/ATC Combination Electrode;
Temperature of pH measurement: +/-0.3degC of SST recorded by SeapHOx Sensor;
Standardization frequency: every 2-3 hours during 10-12 hour fieldwork days;
pH standard values: NBS 4.01, 7.00, and 10.01 pH buffers;
Temperature correction method: Corrected to in situ temperature using Excel macro CO2SYS (Pierrot et al., 2006);
At what temperature was pH reported: SST recorded by SeapHOx Sensor;
Uncertainty: less than 0.02 pH (integrated into final uncertainty of all calibrated sensor pH datasets);
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: In situ temperature recorded by SeapHOx Sensor;
Abbreviation: SST;
Unit: oC;
Analyzing instrument: Sea-Bird Electronics Conductivity-Temperature Sensor, SBE37 integated with SeapHOx Sensor;
Uncertainty: NA;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Salinity recorded by SeapHOx Sensor;
Abbreviation: Salinity;
Unit: NA;
Observation type: Salinity calculated from temperature and conductivity;
Analyzing instrument: Sea-Bird Electronics Conductivity-Temperature Sensor, SBE37 integated with SeapHOx Sensor;
Uncertainty: NA;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Pressure measured with equipment integrated with SeapHOx Sensor;
Abbreviation: Pressure;
Unit: dbar;
Uncertainty: NA;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: raw pH on the total scale calculated using the Honeywell Durafet and its internal reference electrode (Ag/AgCl reference electrode containing a 4.5 M KCl Liquid Junction);
Abbreviation: pH Int Raw;
Unit: pH;
Observation type: Sensor Data;
Analyzing instrument: Honeywell Durafet integrated with SeapHOx Sensor;
Uncertainty: Not reported for raw data;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: raw pH on the total scale calculated using the Honeywell Durafet and its external reference electrode (solid-state chloride ion-selective electrode, Cl-ISE);
Abbreviation: pH Ext Raw;
Unit: pH;
Observation type: Sensor Data;
Analyzing instrument: Honeywell Durafet integrated with SeapHOx Sensor;
Uncertainty: Not reported for raw data;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: pH on the total scale calculated from measured DIC and TA at in situ temperature, salinity, and pressure using Excel macro CO2SYS (Pierrot et al., 2006) using the inorganic carbon dissociation constants of Millero et al. (2006), the bisulfate ion acidity constant of Dickson (1990), and the boron-to-chlorinity ratio of Lee et al. (2010);
Abbreviation: pH^disc_DIC-TA;
Unit: pH;
Uncertainty: Not reported (integrated into final uncertainty of all calibrated sensor pH datasets);
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Difference between pHNBS and pHT at in situ temperature, salinity, and pressure solely attributed to the difference in pH scales. Calculated as the difference between pHNBS and pHT when each value is calculated from measured DIC and TA at in situ temperature, salinity, and pressure using Excel macro CO2SYS (Pierrot et al., 2006) using the inorganic carbon dissociation constants of Millero et al. (2006), the bisulfate ion acidity constant of Dickson (1990), and the boron-to-chlorinity ratio of Lee et al. (2010).;
Abbreviation: Del_pH_scales;
Unit: pH;
Uncertainty: Not reported (integrated into final uncertainty of all calibrated sensor pH datasets);
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: pHNBS measured with a glass electrode corrected to pHT at in situ conditions. Quanity is equal to the difference of pH^field_NBS (minuend value) and pHscales (subtrahend valiue).;
Abbreviation: pH^disc_elec;
Unit: pH;
Uncertainty: Not reported (integrated into final uncertainty of all calibrated sensor pH datasets);
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Colored Dissolved Organic Matter (CDOM) measured by equipment integrated with the co-located Kent County Land-Ocean Biogeochemical Observatory (http://kentcounty.loboviz.com/) at SeapHOx Sensor deployment site;
Abbreviation: CDOM;
Unit: QSDE;
Observation type: Sensor Data;
Uncertainty: Not Reported;
Researcher name: William J. Ullman;
Researcher institution: University of Delaware, School of Marine Science and Policy.
Parameter or Variable: Dissolved Organic Carbon (DOC) calculated from CDOM using Voynova et al. (2015) (https://doi.org/10.1016/j.ecss.2015.03.027) CDOM-DOC relationship for same deployment site;
Abbreviation: DOC;
Unit: uM;
Uncertainty: Not Reported;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Raw voltage measured with Honeywell Durafet's internal reference electrode integrated with SeapHOx Sensor;
Abbreviation: Eint;
Unit: V;
Observation type: Sensor Data;
Uncertainty: Not reported for raw data;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Raw voltage measured with Honeywell Durafet's external reference electrode integrated with SeapHOx Sensor;
Abbreviation: Eext;
Unit: V;
Observation type: Sensor Data;
Uncertainty: Not reported for raw data;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Calibration constant for the Honeywell Durafet's internal reference electrode integrated with SeapHOx Sensor that is applied to the pH Int Raw data to produce final calibrated pH dataset;
Abbreviation: E0int25;
Unit: V;
Uncertainty: NA;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Calibration constant for the Honeywell Durafet's external reference electrode integrated with SeapHOx Sensor that is applied to the pH Ext Raw data to produce final calibrated pH dataset;
Abbreviation: E0ext25;
Unit: V;
Uncertainty: NA;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Conductivity recorded by SeapHOx Sensor;
Abbreviation: Conductivity;
Unit: S/m;
Analyzing instrument: Sea-Bird Electronics Conductivity-Temperature Sensor, SBE37 integated with SeapHOx Sensor;
Uncertainty: NA;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Calibrated pH on the total scale calculated using the Honeywell Durafet's internal reference electrode. Calibrated using pH^disc_DIC-TA (pH on the total scale calculated from measured DIC and TA at in situ temperature, salinity, and pressure using CO2SYS). Not deployment specific.;
Abbreviation: pH^INT_final,1;
Unit: pH;
Uncertainty: 0.0275 pH units (Spring Data); 0.0159 pH units (Summer Data);
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Calibrated pH on the total scale calculated using the Honeywell Durafet's internal reference electrode. Calibrated using pH^disc_elec (pHNBS measured with a glass electrode corrected to pHT at in situ conditions). Not deployment specific.;
Abbreviation: pH^INT_final,2;
Unit: pH;
Uncertainty: 0.0358 pH units (Spring Data); 0.0149 pH units (Summer Data);
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Calibrated pH on the total scale calculated using the Honeywell Durafet's external reference electrode. Calibrated using pH^disc_DIC-TA (pH on the total scale calculated from measured DIC and TA at in situ temperature, salinity, and pressure using CO2SYS). Only calibration points of salinity (S) > 14.84 were used as discussed in Gonski et al. (2018). Specific to spring deployment.;
Abbreviation: pH^EXT_final,1A;
Unit: pH;
Uncertainty: 0.0174 pH units;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Calibrated pH on the total scale calculated using the Honeywell Durafet's external reference electrode. Calibrated using pH^disc_DIC-TA (pH on the total scale calculated from measured DIC and TA at in situ temperature, salinity, and pressure using CO2SYS). Only a subset of data above salinity (S) = 20 was used as discussed in Gonski et al. (2018). Specific to spring deployment.;
Abbreviation: pH^EXT_final,1B;
Unit: pH;
Uncertainty: 0.0158 pH units;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Calibrated pH on the total scale calculated using the Honeywell Durafet's external reference electrode. Calibrated using pH^disc_elec (pHNBS measured with a glass electrode corrected to pHT at in situ conditions). Only calibration points of salinity (S) > 14.84 were used as discussed in Gonski et al. (2018). Specific to spring deployment.;
Abbreviation: pH^EXT_final,2A;
Unit: pH;
Uncertainty: 0.0114 pH units;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Calibrated pH on the total scale calculated using the Honeywell Durafet's external reference electrode. Calibrated using pH^disc_elec (pHNBS measured with a glass electrode corrected to pHT at in situ conditions). Only a subset of data above salinity (S) = 20 was used as discussed in Gonski et al. (2018). Specific to spring deployment.;
Abbreviation: pH^EXT_final,2B;
Unit: pH;
Uncertainty: 0.0123 pH units;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Calibrated pH on the total scale calculated using the Honeywell Durafet's external reference electrode. Calibrated using pH^disc_DIC-TA (pH on the total scale calculated from measured DIC and TA at in situ temperature, salinity, and pressure using CO2SYS). Specific to summer deployment.;
Abbreviation: pH^EXT_final,1;
Unit: pH;
Uncertainty: 0.0121 pH units;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Calibrated pH on the total scale calculated using the Honeywell Durafet's external reference electrode. Calibrated using pH^disc_elec (pHNBS measured with a glass electrode corrected to pHT at in situ conditions). Specific to summer deployment.;
Abbreviation: pH^EXT_final,2;
Unit: pH;
Uncertainty: 0.0105 pH units;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Anomalies between values of pH^INT_final and pH^EXT_final. Quantity is equal to pH^INT_final minus pH^EXT_final for a given time stamp;
Abbreviation: Del_pH_INT-EXT;
Unit: pH;
Uncertainty: Not reported;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Calculated pHT of discrete bottle samples collected to gauge intra-deployment conditioning. More specifically, pH on the total scale calculated from measured DIC and TA at in situ temperature, salinity, and pressure using Excel macro CO2SYS (Pierrot et al., 2006) using the inorganic carbon dissociation constants of Millero et al. (2006), the bisulfate ion acidity constant of Dickson (1990), and the boron-to-chlorinity ratio of Lee et al. (2010).;
Abbreviation: pH^Cond_DIC-TA;
Unit: pH;
Uncertainty: Not Reported;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography).
Parameter or Variable: Excess Alkalinity. Difference between measured total alkalinity and alkalinity calculated from measured DIC and pH^field_NBS. The latter value was calculated in the Excel macro CO2SYS (Pierrot et al., 2006) using the norganic carbon dissociation constants of Millero et al. (2006), the bisulfate ion acidity constant of Dickson (1990), and the boron-to-chlorinity ratio of Lee et al. (2010).;
Abbreviation: Del_TA;
Unit: umol kg-1;
Uncertainty: Not reported;
Researcher name: Stephen F. Gonski;
Researcher institution: University of Delaware, School of Marine Science and Policy (now at: University of Calgary, Department of Geography) .
asNeeded
Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.
NOAA National Centers for Environmental Information
custodian
coulometer for DIC measurement
coulometer for DIC measurement
measures dissolved inorganic carbon (DIC)
A known amount of seawater is dispensed into a stripping chamber where it is acidified and purged with an inert gas. The amount of CO2 in the resulting gas stream is determined by absorbing the CO2 in an absorbent. The pH of the solution is monitored by measuring the transmittance .
pH sensor
pH sensor
generic meter used to measure pH
Any of a class of instruments used to quantify pH in a water or other type of sample.
titrator
titrator
titrator