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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)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 26, 2026 | Last Modified: 2017-12-12T00:00:00.000+00:00
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.

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0168767 DISSOLVED INORGANIC CARBON (DIC) pH total alkalinity coulometer for DIC measurement pH sensor titrator chemical discrete sample physical surface measurements University of Delaware University of Delaware Delaware Bay oceanography 39N75WDE20160509 Ocean Carbon and Acidification Data System (OCADS) Project EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH Surface measurement Time series 39N75WDE20160509 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 COULOMETERS PH METERS > PH METERS OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN Delaware Bay

Complete Metadata
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description 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.
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identifier gov.noaa.nodc:0168767
issued 2017-11-28T00:00:00.000+00:00
keyword 
                                            [
  "0168767",
  "DISSOLVED INORGANIC CARBON (DIC)",
  "pH",
  "total alkalinity",
  "coulometer for DIC measurement",
  "pH sensor",
  "titrator",
  "chemical",
  "discrete sample",
  "physical",
  "surface measurements",
  "University of Delaware",
  "University of Delaware",
  "Delaware Bay",
  "oceanography",
  "39N75WDE20160509",
  "Ocean Carbon and Acidification Data System (OCADS) Project",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH",
  "Surface measurement",
  "Time series",
  "39N75WDE20160509",
  "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",
  "COULOMETERS",
  "PH METERS > PH METERS",
  "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN",
  "Delaware Bay"
]
landingPage https://www.ncei.noaa.gov/contact
language 
                                            []
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2017-12-12T00:00:00.000+00:00
publisher 
                                            {
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  "@type": "org:Organization"
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references 
                                            [
  "https://doi.org/10.1016/j.ecss.2017.10.020",
  "https://doi.org/10.1016/j.ecss.2015.03.027",
  "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system"
]
rights otherRestrictions
spatial -75.39,39.05,-75.39,39.05
temporal 2016-05-09T00:00:00+00:00/2016-08-24T00:00:00+00:00
title 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)

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