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)

browse graphicPreview graphic
This NCEI accession 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.
  • 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). Version 1.1. NOAA National Centers for Environmental Information. Dataset. doi:10.7289/V5ZP44D7 [access date]
gov.noaa.nodc:0168767
Download Data
  • HTTPS (download)
    Navigate directly to the URL for data access and direct download.
  • FTP (download)
    These data are available through the File Transfer Protocol (FTP). You may use any FTP client to download these data.
Distribution Formats
  • Originator data format
Ordering Instructions Data may be searched and downloaded using online services provided by NCEI using the online resource URLs in this record. Contact NCEI Information Services for custom orders. When requesting data from NCEI, the desired data set may be referred to by the unique package identification number listed in this metadata record.
Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact Information Services
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Time Period 2016-05-09 to 2016-08-24
Spatial Bounding Box Coordinates
N: 39.05
S: 39.05
E: -75.39
W: -75.39
Spatial Coverage Map
General Documentation
  • Project Metadata
    Navigate directly to the URL for a descriptive web page with download links.
  • Dataset Description
    Navigate directly to the URL for a descriptive web page with download links.
  • Descriptive Information
    Navigate directly to the URL for a descriptive web page with download links.
Publication Dates
  • publication: 2017-12-12
Edition 1.1
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency As needed
Purpose To assess the performance of the Honeywell Durafet for pH measurement in estuaries with broad salinity ranges and wide ranges of time-varying salinities.
Use Limitations
  • accessLevel: Public
  • 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 data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • 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). Version 1.1. NOAA National Centers for Environmental Information. Dataset. doi:10.7289/V5ZP44D7 [access date]
Cited Authors
  • Gonski, Stephen F.
  • Cai, Wei-Jun
  • Ullman, William J.
  • Joesoef, Andrew A.
  • Main, Christopher R.
  • Pettay, Daniel T.
  • Martz, Todd R.
Principal Investigators
Contributors
Resource Providers
Publishers
Acknowledgments
  • Funding Information: University of Delaware Provost's Office and the College of Earth (Delaware Sea Grant award (HCE-23), SMSP175136)
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Cruise ID
  • 39N75WDE20160509
EXPOCODE
  • 39N75WDE20160509
Global Change Master Directory (GCMD) Science and Services Keywords
  • EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY
  • EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON
  • EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH
Provider Keywords
  • 39N75WDE20160509
Provider Variable Names
  • 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
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Platform keywords NODC PLATFORM NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
  • COULOMETERS
  • PH METERS
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
Provider Geographic Names
  • Delaware Bay
Project keywords Ocean Acidification Search Keywords
  • Ocean Carbon Data System (OCADS) Project
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • 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). Version 1.1. NOAA National Centers for Environmental Information. Dataset. doi:10.7289/V5ZP44D7 [access date]
Access Constraints
  • 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.
Fees
  • Digital data may be downloaded from NCEI at no charge in most cases. For custom orders of digital data or to obtain a copy of analog materials, please contact NCEI Information Services for information about current fees.
Lineage information for: dataset
Processing Steps
  • 2017-12-12T02:45:06 - NCEI Accession 0168767 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: DIC; Unit: umol kg-1; Measured or calculated: Measured; Analyzing instrument: Apollo SciTech AS-C3; Poison name: sat. HgCl2; Poison 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; Poison name: sat. HgCl2; Poison 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).
Acquisition Information (collection)
Instrument
  • Coulometer for DIC measurement
  • pH sensors
  • titrator
Platform
  • PIERCE
Last Modified: 2018-09-17T20:35:07
For questions about the information on this page, please email: NODC.DataOfficer@noaa.gov