Dataset Overview | National Centers for Environmental Information (NCEI)

Dissolved inorganic carbon (DIC), total alkalinity and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Knorr cruise KN195 (EXPOCODE 316N20090614) in Bering Sea from 2009-06-14 to 2009-07-30 (NCEI Accession 0189660)

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This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, temperature, salinity and nutrients during the R/V Knorr cruise KN195 (EXPOCODE 316N20090614) in Bering Sea from 2009-06-14 to 2009-07-30. The cruise was funded by the National Science Foundation (NSF) for the Bering Sea Ecosystem Study-Bering Sea Integrated Ecosystem Research Program (BEST-BSIERP) and supported by numerous agencies and institutions. The CTD operations on the cruise were managed by personnel from NOAA/PMEL in the Eco FOCI program, with technical expertise from Scripps Institution of Oceanography personnel, and deployment assistance from Healy personnel.

Dataset Citation

Cite as: Cross, Jessica N.; Mathis, Jeremy T.; Monacci, Natalie M.; Mordy, Calvin; Stabeno, Phyllis J.; Sullivan, Margaret E. (2019). Dissolved inorganic carbon (DIC), total alkalinity and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Knorr cruise KN195 (EXPOCODE 316N20090614) in Bering Sea from 2009-06-14 to 2009-07-30 (NCEI Accession 0189660). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/sqkj-f093. Accessed [date].

Dataset Identifiers

ISO 19115-2 Metadata

gov.noaa.nodc:0189660

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Distribution Formats	Originator data format
Ordering Instructions	Contact NCEI for other distribution options and instructions.
Distributor	NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov
Dataset Point of Contact	NOAA National Centers for Environmental Information ncei.info@noaa.gov

Time Period	2009-06-14 to 2009-07-30
Spatial Bounding Box Coordinates	West: -179.39 East: -163.96 South: 55.31 North: 59.91
Spatial Coverage Map

General Documentation

Project Metadata
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Descriptive Information
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Associated Resources

Cross, J.N., Mathis, J.T., Bates, N.R., Byrne, R.H. 2013. Conservative and non-conservative variations of total alkalinity on the southeastern Bering Sea shelf. Marine Chemistry 154, 100-112. https://doi.org/10.1016/j.marchem.2013.05.012
- https://doi.org/10.1016/j.marchem.2013.05.012
  journal article
Cross, J.N., Mathis, J.T., Lomas, M.W., Moran, S.B., Baumann, M.S., Shull, D.H., Mordy, C.W., Ostendorf, M.L., Bates, N.R., Stabeno, P.J., Grebmeier, J.M. 2014. Integrated assessment of the carbon budget in the southeastern Bering Sea. Deep-Sea Research II 109 112-124 https://doi.org/10.1016/j.dsr2.2014.03.003
- https://doi.org/10.1016/j.dsr2.2014.03.003
  journal article
Chukchi Sea, Bering Sea Cruises
- https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/clivar_Chukchi_Sea.html
  related resource
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
- https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
  OCADS website

Publication Dates	publication: 2019-06-06
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 Historical archive - data has been stored in an offline storage facility
Data Update Frequency	As needed
Purpose	The BEST-BSIERP is a multi-year, interdisciplinary program to develop an end-to-end mechanistic understanding of how climate change will affect the marine ecosystems of the eastern Bering Sea, the continued use of their resources, and the social, economic and cultural sustainability of the people who depend on them.
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 the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.

Dataset Citation	Cite as: Cross, Jessica N.; Mathis, Jeremy T.; Monacci, Natalie M.; Mordy, Calvin; Stabeno, Phyllis J.; Sullivan, Margaret E. (2019). Dissolved inorganic carbon (DIC), total alkalinity and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Knorr cruise KN195 (EXPOCODE 316N20090614) in Bering Sea from 2009-06-14 to 2009-07-30 (NCEI Accession 0189660). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/sqkj-f093. Accessed [date].
Cited Authors	Cross, Jessica N. NOAA Pacific Marine Environmental Laboratory (PMEL) Mathis, Jeremy T. Monacci, Natalie M. University of Alaska Fairbanks (UAF) Mordy, Calvin Stabeno, Phyllis J. NOAA Pacific Marine Environmental Laboratory (PMEL) Sullivan, Margaret E. University of Washington Cooperative Institute for Climate, Ocean and Ecosystem Studies (CICOES)
Principal Investigators	Jessica N. Cross US DOC; NOAA; OAR; Pacific Marine Environmental Laboratory (PMEL) Jeremy T. Mathis University of Alaska Fairbanks (UAF) Phyllis J. Stabeno US DOC; NOAA; OAR; Pacific Marine Environmental Laboratory (PMEL) Calvin Mordy University of Washington Cooperative Institute for Climate, Ocean and Ecosystem Studies (CICOES) Natalie M. Monacci University of Alaska Fairbanks (UAF) Margaret E. Sullivan University of Washington Cooperative Institute for Climate, Ocean and Ecosystem Studies (CICOES)
Contributors	University of Alaska Fairbanks (UAF) Woods Hole Oceanographic Institution (WHOI) US DOC; NOAA; OAR; Pacific Marine Environmental Laboratory (PMEL)
Resource Providers	Robert M. Key Princeton University Princeton University
Publishers	NOAA National Centers for Environmental Information
Acknowledgments	Funding Information: National Science Foundation (Collaborative Research: BEST - A Service Proposal to Examine Impacts of Sea-ice on Hydrographic Structure and Nutrients over the Eastern Bering Sea Shelf, 732430)

Theme keywords	NODC DATA TYPES THESAURUS DISSOLVED INORGANIC CARBON (DIC) NUTRIENTS SALINITY total alkalinity WATER TEMPERATURE NODC OBSERVATION TYPES THESAURUS chemical discrete sample physical profile WMO_CategoryCode oceanography Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY OCADS Study Type Discrete measurement Provider Variable Abbreviations ALKALI CTDSAL CTDTMP SILCAT, NITRAT, NITRIT PHSPHT TCARBN
Data Center keywords	NODC COLLECTING INSTITUTION NAMES THESAURUS University of Alaska Fairbanks US DOC; NOAA; OAR; Pacific Marine Environmental Laboratory Woods Hole Oceanographic Institution NODC SUBMITTING INSTITUTION NAMES THESAURUS Princeton University Global Change Master Directory (GCMD) Data Center Keywords DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce WHOI > WOODS HOLE OCEANOGRAPHIC INSTITUTION
Platform keywords	NODC PLATFORM NAMES THESAURUS R/V Knorr Global Change Master Directory (GCMD) Platform Keywords Ships ICES/SeaDataNet Ship Codes KNORR (call sign: KCEJ, ICES code: 316N, 1970)
Instrument keywords	NODC INSTRUMENT TYPES THESAURUS carbon dioxide (CO2) gas analyzer CTD Niskin bottle titrator Global Change Master Directory (GCMD) Instrument Keywords CO2 ANALYZERS > CO2 ANALYZERS CTD > Conductivity, Temperature, Depth NISKIN BOTTLES
Place keywords	NODC SEA AREA NAMES THESAURUS Bering Sea North Pacific Ocean Global Change Master Directory (GCMD) Location Keywords OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > BERING SEA Provider Geographic Names Bering Sea North Pacific Ocean
Project keywords	NODC PROJECT NAMES THESAURUS Bering Ecosystem Study (BEST) Cruise ID KN195 EXPOCODE 316N20090614 Ocean Acidification Search Keywords Ocean Carbon and Acidification Data System (OCADS) Project Reference Section ID Chukchi Sea, Bering Sea
Keywords	NCEI ACCESSION NUMBER 0189660

Use Constraints	Cite as: Cross, Jessica N.; Mathis, Jeremy T.; Monacci, Natalie M.; Mordy, Calvin; Stabeno, Phyllis J.; Sullivan, Margaret E. (2019). Dissolved inorganic carbon (DIC), total alkalinity and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Knorr cruise KN195 (EXPOCODE 316N20090614) in Bering Sea from 2009-06-14 to 2009-07-30 (NCEI Accession 0189660). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/sqkj-f093. Accessed [date].
Access Constraints	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.
Fees	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.

Lineage information for: dataset
Processing Steps	2019-06-06T21:14:10Z - NCEI Accession 0189660 v1.1 was published.
Output Datasets	NCEI Accession 0189660 v1.1 NCEI Accession 0189660 v1.1 (download) published 2019-06-06T21:14:10Z

Lineage information for: dataset
Processing Steps	Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Unit: UMOL/KG; Observation type: Discrete, bottle; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Analyzing instrument: Discrete samples were run on a VINDTA 3C; Detailed sampling and analyzing information: The Versatile INstrument for the Determination of Total inorganic and titration of Alkalinity (VINDTA) by Marianda paired with a Coulometer by UIC was used to conduct a coulomteric carbon dioxide titration with a carrier gas and a potentiometric alkalinity titration with an open cell.; Standardization description: The samples were standardized using Certified Reference Materials (CRMs) provided by Dr. A. Dickson of Scripps Institution of Oceanography.; Standardization frequency: Daily; CRM manufacturer: Andrew Dickson Laboratory at SIO; CRM batch number: 94-99; Preservation method: Mercuric chloride solution; Preservative volume: 200 μL; Uncertainty: 4 μmol kg-1; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Mathis, J. T., Cross, J. N., Bates, N. R., Bradley Moran, S., Lomas, M. W., Mordy, C. W., and Stabeno, P. J. 2010. Seasonal distribution of dissolved inorganic carbon and net community production on the Bering Sea shelf, Biogeosciences, 7, 1769-1787, https://doi.org/10.5194/bg-7-1769-2010.; Researcher name: Jessica N. Cross; Researcher institution: University of Alaska Fairbanks. Parameter or Variable: Total alkalinity; Abbreviation: ALKALI; Unit: UMOL/KG; Observation type: Discrete, bottle; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Analyzing instrument: Discrete samples were run on a VINDTA 3C; Type of titration: Potentiometric; Cell type (open or closed): Open; Curve fitting method: GRAN plot; Detailed sampling and analyzing information: The Versatile INstrument for the Determination of Total inorganic and titration of Alkalinity (VINDTA) by Marianda paired with a Coulometer by UIC was used to conduct a coulomteric carbon dioxide titration with a carrier gas and a potentiometric alkalinity titration with an open cell.; Replicate information: Duplicates samples from the same niskin were measured at each station, 12.6% of samples. The absolute standard deviations of duplicates were 0.85 umol/kg and 1.68 umol/kg for the two titration cells.; Standardization description: The samples were standardized using Certified Reference Materials (CRMs) provided by Dr. A. Dickson of Scripps Institution of Oceanography.; Standardization frequency: Daily; CRM manufacturer: Certified Reference Material (Dr. Andrew Dickson, Marine Physical Laboratory, La Jolla, California); CRM batch number: CRM batch 94-99; Preservation method: Mercuric chloride; Preservative volume: 200 μL; Uncertainty: 4 μmol/kg; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Mathis, J. T., Cross, J. N., Bates, N. R., Bradley Moran, S., Lomas, M. W., Mordy, C. W., and Stabeno, P. J. 2010. Seasonal distribution of dissolved inorganic carbon and net community production on the Bering Sea shelf, Biogeosciences, 7, 1769-1787, https://doi.org/10.5194/bg-7-1769-2010.; Researcher name: Jessica N. Cross; Researcher institution: University of Alaska Fairbanks. Parameter or Variable: CTD Temperature; Abbreviation: CTDTMP; Unit: degrees celcius; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD; Detailed sampling and analyzing information: A profiling CTD 911 was used to collect the conductivity, temperature, and depth data at each station. Data are processed using Seabird CTD software and calibration file. Post-processing at the Pacific Marine Environmental Laboratory includes filtering extreme outliers, extrapolation of values from the top value collected at ~3-5m to the surface. Each cast is visually reviewed for reasonableness and density inversions (greater than 0.02 sigma-t) caused by spurious measurements. This process is facilitated by comparison of the outputs of the 2 temperature and conductivity sensors. Profile data are bin-averaged to 1 meter.; Uncertainty: 0.001 DEG C; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Phyllis J. Stabeno; Researcher institution: NOAA/PMEL. Parameter or Variable: CTD Salinity; Abbreviation: CTDSAL; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD; Detailed sampling and analyzing information: A profiling CTD 911 was used to collect the conductivity, temperature, and depth data at each station. Data are processed using Seabird CTD software and calibration file. Post-processing at the Pacific Marine Environmental Laboratory includes filtering extreme outliers, extrapolation of values from the top value collected at ~3-5m to the surface. Each cast is visually reviewed for reasonableness and density inversions (greater than 0.02 sigma-t) caused by spurious measurements. This process is facilitated by comparison of the outputs of the 2 temperature and conductivity sensors. Profile data are bin-averaged to 1 meter.; Uncertainty: 0.003; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Phyllis J. Stabeno; Researcher institution: NOAA/PMEL. Parameter or Variable: Nutrients; Abbreviation: SILCAT, NITRAT, NITRIT PHSPHT; Unit: UMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD Niskin Bottles; Analyzing instrument: Discrete samples were run on a continuous flow analyzer.; Detailed sampling and analyzing information: Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with sample before filling. Some samples were refrigerated for 3-12 hours prior to analysis. Nutrient samples were analyzed according to the methods of Gordon, et al (1993). Ammonium was measured using an indophenol blue method modified from Mantoura and Woodward (1983).; Replicate information: In a direct comparison of EcoFOCI and BASIS methods, replicate frozen samples from the Bering Sea were analyzed with each method and found to be within 0.5 μM nitrate, 0.04 μM nitrite, and 0.7 μM ammonium (SD, n = 13).; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Gordon, I., Jennings, J.C., Ross, J.A., Krest, J. 1993. A Suggested Protocol for Continuous Flow Automated Analysis of Seawater Nutrients (Phosphate, Nitrate, Nitrite and Silicic Acid) in the WOCE Hydrographic Program and the Joint Global Ocean Fluxes Study. Methods Manual WHPO. 91-1. Mantoura, R.F.C., Woodward, E.M.S., 1983. Optimization of the indophenol blue method for the automated determination of ammonia in estuarine waters. Estuar. Coast. Shelf Sci. 17, 219-224.; Researcher name: Calvin Mordy; Researcher institution: NOAA/PMEL .

Lineage information for: dataset

Processing Steps

Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Unit: UMOL/KG; Observation type: Discrete, bottle; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Analyzing instrument: Discrete samples were run on a VINDTA 3C; Detailed sampling and analyzing information: The Versatile INstrument for the Determination of Total inorganic and titration of Alkalinity (VINDTA) by Marianda paired with a Coulometer by UIC was used to conduct a coulomteric carbon dioxide titration with a carrier gas and a potentiometric alkalinity titration with an open cell.; Standardization description: The samples were standardized using Certified Reference Materials (CRMs) provided by Dr. A. Dickson of Scripps Institution of Oceanography.; Standardization frequency: Daily; CRM manufacturer: Andrew Dickson Laboratory at SIO; CRM batch number: 94-99; Preservation method: Mercuric chloride solution; Preservative volume: 200 μL; Uncertainty: 4 μmol kg-1; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Mathis, J. T., Cross, J. N., Bates, N. R., Bradley Moran, S., Lomas, M. W., Mordy, C. W., and Stabeno, P. J. 2010. Seasonal distribution of dissolved inorganic carbon and net community production on the Bering Sea shelf, Biogeosciences, 7, 1769-1787, https://doi.org/10.5194/bg-7-1769-2010.; Researcher name: Jessica N. Cross; Researcher institution: University of Alaska Fairbanks.
Parameter or Variable: Total alkalinity; Abbreviation: ALKALI; Unit: UMOL/KG; Observation type: Discrete, bottle; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Analyzing instrument: Discrete samples were run on a VINDTA 3C; Type of titration: Potentiometric; Cell type (open or closed): Open; Curve fitting method: GRAN plot; Detailed sampling and analyzing information: The Versatile INstrument for the Determination of Total inorganic and titration of Alkalinity (VINDTA) by Marianda paired with a Coulometer by UIC was used to conduct a coulomteric carbon dioxide titration with a carrier gas and a potentiometric alkalinity titration with an open cell.; Replicate information: Duplicates samples from the same niskin were measured at each station, 12.6% of samples. The absolute standard deviations of duplicates were 0.85 umol/kg and 1.68 umol/kg for the two titration cells.; Standardization description: The samples were standardized using Certified Reference Materials (CRMs) provided by Dr. A. Dickson of Scripps Institution of Oceanography.; Standardization frequency: Daily; CRM manufacturer: Certified Reference Material (Dr. Andrew Dickson, Marine Physical Laboratory, La Jolla, California); CRM batch number: CRM batch 94-99; Preservation method: Mercuric chloride; Preservative volume: 200 μL; Uncertainty: 4 μmol/kg; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Mathis, J. T., Cross, J. N., Bates, N. R., Bradley Moran, S., Lomas, M. W., Mordy, C. W., and Stabeno, P. J. 2010. Seasonal distribution of dissolved inorganic carbon and net community production on the Bering Sea shelf, Biogeosciences, 7, 1769-1787, https://doi.org/10.5194/bg-7-1769-2010.; Researcher name: Jessica N. Cross; Researcher institution: University of Alaska Fairbanks.
Parameter or Variable: CTD Temperature; Abbreviation: CTDTMP; Unit: degrees celcius; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD; Detailed sampling and analyzing information: A profiling CTD 911 was used to collect the conductivity, temperature, and depth data at each station. Data are processed using Seabird CTD software and calibration file. Post-processing at the Pacific Marine Environmental Laboratory includes filtering extreme outliers, extrapolation of values from the top value collected at ~3-5m to the surface. Each cast is visually reviewed for reasonableness and density inversions (greater than 0.02 sigma-t) caused by spurious measurements. This process is facilitated by comparison of the outputs of the 2 temperature and conductivity sensors. Profile data are bin-averaged to 1 meter.; Uncertainty: 0.001 DEG C; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Phyllis J. Stabeno; Researcher institution: NOAA/PMEL.
Parameter or Variable: CTD Salinity; Abbreviation: CTDSAL; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD; Detailed sampling and analyzing information: A profiling CTD 911 was used to collect the conductivity, temperature, and depth data at each station. Data are processed using Seabird CTD software and calibration file. Post-processing at the Pacific Marine Environmental Laboratory includes filtering extreme outliers, extrapolation of values from the top value collected at ~3-5m to the surface. Each cast is visually reviewed for reasonableness and density inversions (greater than 0.02 sigma-t) caused by spurious measurements. This process is facilitated by comparison of the outputs of the 2 temperature and conductivity sensors. Profile data are bin-averaged to 1 meter.; Uncertainty: 0.003; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Phyllis J. Stabeno; Researcher institution: NOAA/PMEL.
Parameter or Variable: Nutrients; Abbreviation: SILCAT, NITRAT, NITRIT PHSPHT; Unit: UMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD Niskin Bottles; Analyzing instrument: Discrete samples were run on a continuous flow analyzer.; Detailed sampling and analyzing information: Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with sample before filling. Some samples were refrigerated for 3-12 hours prior to analysis. Nutrient samples were analyzed according to the methods of Gordon, et al (1993). Ammonium was measured using an indophenol blue method modified from Mantoura and Woodward (1983).; Replicate information: In a direct comparison of EcoFOCI and BASIS methods, replicate frozen samples from the Bering Sea were analyzed with each method and found to be within 0.5 μM nitrate, 0.04 μM nitrite, and 0.7 μM ammonium (SD, n = 13).; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Gordon, I., Jennings, J.C., Ross, J.A., Krest, J. 1993. A Suggested Protocol for Continuous Flow Automated Analysis of Seawater Nutrients (Phosphate, Nitrate, Nitrite and Silicic Acid) in the WOCE Hydrographic Program and the Joint Global Ocean Fluxes Study. Methods Manual WHPO. 91-1. Mantoura, R.F.C., Woodward, E.M.S., 1983. Optimization of the indophenol blue method for the automated determination of ammonia in estuarine waters. Estuar. Coast. Shelf Sci. 17, 219-224.; Researcher name: Calvin Mordy; Researcher institution: NOAA/PMEL .

Acquisition Information (collection)
Instrument	carbon dioxide (CO2) gas analyzer CTD Niskin bottle titrator
Platform	R/V Knorr

Last Modified: 2025-01-09T12:39:32Z
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Dissolved inorganic carbon (DIC), total alkalinity and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Knorr cruise KN195 (EXPOCODE 316N20090614) in Bering Sea from 2009-06-14 to 2009-07-30 (NCEI Accession 0189660)

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