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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title: 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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abstract: 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.
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.
credit: 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)
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keyword: Bering Sea
keyword: North Pacific Ocean
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otherConstraints: 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].
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beginPosition: 2009-06-14
endPosition: 2009-07-30
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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.
orderingInstructions: Contact NCEI for other distribution options and instructions.
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description: NCEI Accession 0189660 v1.1 was published.
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dataQualityInfo: (DQ_DataQuality)
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description: 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.
processStep: (LE_ProcessStep)
description: 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.
processStep: (LE_ProcessStep)
description: 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.
processStep: (LE_ProcessStep)
description: 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.
processStep: (LE_ProcessStep)
description: 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 .
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acquisitionInformation: (MI_AcquisitionInformation)
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: carbon dioxide (CO2) gas analyzer
type: carbon dioxide (CO2) gas analyzer
description: measures gaseous carbon dioxide Carbon dioxide gas analyzer has often been referred to as LI-COR, because a lot of researchers choose to use products manufactured by LI-COR incorporation for their carbon dioxide measurement. The main component of a carbon dioxide analyzer is a nondispersive infrared (NDIR) spectroscopic sensors to detect CO2 in a gaseous environment by its characteristic absorption. Carbon dioxide (CO2) gas analyzer works together with carbon dioxide (CO2) equilibrator (insttypes_id 184) to measure carbon dioxide in the water. To measure water carbon dioxide, water needs to be continuously supplied to a showerhead inside an equilibrator. As the water flows through the equilibrator chamber, dissolved carbon dioxide exchanges quickly with air in the headspace. This air is then sampled by the carbon dioxide analyzer to determine the mole fraction of CO2 in water.
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code: CTD
type: CTD
description: Conductivity-Temperature-Depth probe
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: Niskin bottle
type: Niskin bottle
description: Device for obtaining samples of seawater at a specific depth Why special entry for Niskin bottle but no entry for Nansen bottle?
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: titrator
type: titrator
description: titrator
platform: (MI_Platform)
identifier: (MD_Identifier)
code: R/V Knorr
description: Title: R/V Flag: United States of America Vessel Type: Research Vessel (Oceanographic) DOB: 1970 IMO: 7738618 MMSI: 367246000
instrument: (missing)
