gov.noaa.nodc:0252614 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 2026-07-28T13:35:29Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity (TA), salinity, oxygen, nutrients, and temperature during the CCGS John P. Tully cruise 2019.23 (EXPOCODE 18DD20190829) in the Salish Sea and off the west coast of Vancouver Island of the North American Pacific coast from 2019-08-29 to 2019-09-06 (NCEI Accession 0252614) 2022-04-26 publication 2022-04-25 creation International DOI Foundation (IDF) 10.25921/5fza-nj73 NOAA National Centers for Environmental Information gov.noaa.nodc:0252614 NCEI Archive Management System 0252614 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 Matthew R. Miller University of Victoria (UVic) MattMiller@uvic.ca https://www.uvic.ca/ HTTPS University of Victoria (UVic) website Institution web page information resourceProvider University of Victoria (UVic) https://www.uvic.ca/ HTTPS University of Victoria (UVic) website Institution web page information resourceProvider Akash Sastri Fisheries and Oceans Canada, Institute of Ocean Sciences akash.sastri@dfo-mpo.gc.ca principalInvestigator Debby Ianson Fisheries and Oceans Canada, Institute of Ocean Sciences debby.Ianson@dfo-mpo.gc.ca https://www.ubc.ca/ HTTPS Fisheries and Oceans Canada, Institute of Ocean Sciences website Institution web page information principalInvestigator Tamara Fraser Fisheries and Oceans Canada, Institute of Ocean Sciences collaborator Paul A. Covert Fisheries and Oceans Canada collaborator Nina Nemcek collaborator Matthew R. Miller University of Victoria (UVic) MattMiller@uvic.ca https://www.uvic.ca/ HTTPS University of Victoria (UVic) website Institution web page information collaborator Marty Davelaar Fisheries and Oceans Canada, Institute of Ocean Sciences collaborator Mark Belton Fisheries and Oceans Canada, Institute of Ocean Sciences collaborator Kenny Scozzafava Fisheries and Oceans Canada, Institute of Ocean Sciences collaborator Jasmine Wietzke collaborator Germaine Gatien collaborator Danielle Caleb Department of Fisheries and Oceans Canada, Institute of Ocean Sciences - Victoria danielle.caleb@dfo-mpo.gc.ca collaborator Sastri, Akash R. Fisheries and Oceans Canada, Institute of Ocean Sciences author Davelaar, Marty Fisheries and Oceans Canada, Institute of Ocean Sciences author Caleb, Danielle Department of Fisheries and Oceans Canada, Institute of Ocean Sciences - Victoria danielle.caleb@dfo-mpo.gc.ca author Covert, Paul Fisheries and Oceans Canada author Ianson, Debby Fisheries and Oceans Canada, Institute of Ocean Sciences https://www.ubc.ca/ HTTPS Fisheries and Oceans Canada, Institute of Ocean Sciences website Institution web page information author Gatien, Germaine author Scozzafava, Kenny Fisheries and Oceans Canada, Institute of Ocean Sciences author Miller, Matthew R. University of Victoria MattMiller@uvic.ca https://www.uvic.ca/ HTTPS University of Victoria (UVic) website Institution web page information author Belton, Mark Fisheries and Oceans Canada, Institute of Ocean Sciences author Nemcek, Nina author Fraser, Tamara Fisheries and Oceans Canada, Institute of Ocean Sciences author Wietzke, Jasmine author Fisheries and Oceans Canada, Institute of Ocean Sciences contributor tableDigital This dataset consists of data collected during the CCGS John P. Tully cruise 2019.23 (EXPOCODE 18DD20190829) in the Salish Sea and off the west coast of Vancouver Island of the North American Pacific coast from 2019-08-29 to 2019-09-06 as part of the La Perouse Water Properties Survey. Discrete dissolved inorganic carbon (DIC), total alkalinity (TA), salinity, and nutrient samples were taken from rosette casts with 10L Niskin bottles and analysed at the Institute of Ocean Sciences. Discrete samples of dissolved oxygen were also collected and analysed onboard the vessel. CTD profiles were recorded with each rosette cast. DIC and TA samples were placed in cold storage for 1-4 weeks before analysis. A total of 61 DIC and TA pairs were sampled with a 22 percent replication rate. Replicates are not averaged in this dataset and appear individually, indicated by decimal sample ID's (e.g. 26.1, 26.2). The pooled standard deviations (of difference between replicate pairs) were calculated to be 6 umol/kg and 5 umol/kg respectively. Replicates with a QC flag = 3 were included in the pooled standard deviation calculation but replicate pairs with at least one QC flag = 4 (n = 1) were excluded. La Perouse Program Water Properties Survey Funding Information: Government of Canada: Fisheries and Oceans Canada (Aquatic Climate Change Adaptation Services Program (ACCASP), 881-15K-96036) 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:0252614 Preview graphic PNG 0252614 NCEI ACCESSION NUMBER 2022-04-22 publication AMMONIUM (NH4) DISSOLVED INORGANIC CARBON (DIC) DISSOLVED OXYGEN HYDROSTATIC PRESSURE nitrate + nitrite content (concentration) phosphate SALINITY silicate total alkalinity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS bottle CTD instrument NODC INSTRUMENT TYPES THESAURUS chemical discrete sample physical profile theme NODC OBSERVATION TYPES THESAURUS JOHN P. TULLY platform NODC PLATFORM NAMES THESAURUS Fisheries and Oceans Canada, Institute of Ocean Sciences dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS University of Victoria dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Ocean Carbon and Acidification Data System (OCADS) project NODC PROJECT NAMES THESAURUS North Pacific Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication CA/DFO/PR/SB/IOS > Institute of Ocean Sciences, Science Branch, Pacific Region, Fisheries and Oceans, Canada dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 24 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). 2025. GCMD Keywords, Version 21. 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 2019.23 project Cruise ID 18DD20190829 project EXPOCODE Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords Coastal project Reference Section ID La Perouse Program Water Properties Survey project Research Projects EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 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). 2025. GCMD Keywords, Version 21. 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 Discrete measurement Profile theme OCADS Study Type Salish Sea theme Provider Keywords AMMONIUM CTDPRS CTDSAL CTDTMP DIC NITRATE_NITRITE OXYGEN PHOSPHATE SALINITY SILICATE TA theme Provider Variable Abbreviations CTD > Conductivity, Temperature, Depth instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 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). 2025. GCMD Keywords, Version 21. 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 JOHN P. TULLY (call sign: CG2958, ICES code: 18DD, 1984-) platform ICES/SeaDataNet Ship Codes OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 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). 2025. GCMD Keywords, Version 21. 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 North Pacific Ocean Salish Sea place Provider Geographic Names accessLevel: public otherRestrictions Cite as: Sastri, Akash R.; Davelaar, Marty; Caleb, Danielle; Covert, Paul; Ianson, Debby; Gatien, Germaine; Scozzafava, Kenny; Miller, Matthew R.; Belton, Mark; Nemcek, Nina; Fraser, Tamara; Wietzke, Jasmine (2022). Discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity (TA), salinity, oxygen, nutrients, and temperature during the CCGS John P. Tully cruise 2019.23 (EXPOCODE 18DD20190829) in the Salish Sea and off the west coast of Vancouver Island of the North American Pacific coast from 2019-08-29 to 2019-09-06 (NCEI Accession 0252614). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/5fza-nj73. 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. Salish Cruise Data Package 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/SalishCruise_DataPackage.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/SalishCruise_DataPackage.html Related resource information NOAA National Centers for Environmental Information (NCEI) publisher documentDigital 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 NOAA National Centers for Environmental Information (NCEI) publisher documentDigital [accessed 2024-02-08] crossReference program eng; USA utf8 environment oceans -126.72 -124.99 48.42 50.5 2019-08-29 2019-09-06 This data package (Submission ID: BF1B8WL2Z) was acquired by NCEI from the Scientific Data Integration System (SDIS) at the NOAA Pacific Marine Environmental Laboratory (PMEL) in accordance with the archival submission agreement between NCEI and PMEL. 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Originator data format 0.412 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0252614.html HTTPS Web browser Project Metadata Navigate directly to the URL for a descriptive web page with download links. information https://doi.org/10.25921/5fza-nj73 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/252614 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/252614 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0200/0252614/ 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 0252614 v1.1 was published. 2022-04-26T19:05:34Z NCEI Accession 0252614 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0252614/1.1 HTTPS NCEI Accession 0252614 v1.1 published 2022-04-26T19:05:34Z download dataset Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: DIC; Unit: µmol/kg; Observation type: profile; In-situ / Manipulation / Response variable: in-situ observation; Sampling instrument: Rosette; Niskin 10L; Analyzing instrument: VINDTA along with a 5011 or 5017 Coulometer; Detailed sampling and analyzing information: Seawater samples were collected from standard depths in 500 mL borosilicate glass reagent bottles. 5 mL of water was removed to allow room for thermal expansion and the sample was preserved within 30 minutes of collection with 0.2 mL of a mercuric chloride saturated solution; then sealed with Apiezon M grease and the ground glass stoppers secured in place with electrical tape. The samples were stored in cold storage on-ship and on-shore before on-shore laboratory analysis. The samples were analysed for DIC using a VINTA sample handling system in conjunction with a coulometer (UIC Inc.) to quantify total CO2 purged from the acidified sample. Measurements of a Certified Reference Material seawater (CRMs; Scripps Oceanographic Institution) were used for calibrating DIC with daily duplicate CRM measurements.; Replicate information: 22%; Standardization description: Referenced to duplicate measurements of a CRM before each daily batch of samples; Standardization frequency: Daily; CRM manufacturer: Andrew Dickson; Scripps Oceanographic Institute; CRM batch number: 178; Preservation method: Mercuric chloride saturated solution; Preservative volume: 200 uL per 500 ml sample bottle = 0.04%; Preservative correction: 1.0004; Uncertainty: 6; Quality flag convention: Updated WOCE QC flags; 0 = Interpolated data; 1 = Not evaluated/quality unknown; 2 = Acceptable; 3 = Questionable; 4 = Known bad; 6 = Median of replicates; 9 = Missing value; Method reference: Dickson; A.G.; Sabine; C.L. and Christian; J.R. (Eds.) 2007. Guide to Best Practices for Ocean CO2 Measurements. PICES Special Publication 3; 191 pp.; https://cdiac.ess-dive.lbl.gov/ftp/oceans/Handbook_2007/Guide_all_in_one.pdf; Chapter 4; SOP 2; Researcher name: Marty Davelaar; Danielle Caleb; Researcher institution: Institute of Ocean Sciences Parameter or Variable: Total alkalinity; Abbreviation: TA; Unit: µmol/kg; Observation type: profile; In-situ / Manipulation / Response variable: in-situ observation; Calculation method and parameters: Titration curves were fit with the Python Calkulate package (Humphreys and Matthews, 2022, https://doi.org/10.5281/zenodo.2634304) and the following constants: k_bisulfate - Dickson and Riley (1990); k_carbonic - Lueker et al. (2000); k_fluoride - Perez & Fraga (1987); tot_borate - Uppstrom (1974).; Sampling instrument: Rosette; Niskin bottle 10 L; Analyzing instrument: In-house automated sampler with Metrohm Dosimat 665 and LabView TM software; Type of titration: Potentiometric multi point titration; Cell type (open or closed): open; Detailed sampling and analyzing information: Seawater samples were collected from standard depths in 500 mL borosilicate glass reagent bottles. 5 mL of water was removed to allow room for thermal expansion and the sample was preserved within 30 minutes of collection with 0.2 mL of a mercuric chloride saturated solution; then sealed with Apiezon M grease and the ground glass stoppers secured in place with electrical tape. The samples were stored in cold stoage on-ship and on-shore until on-shore laboratory analysis. TA in the sample was determined using an open cell automated potentiometric titration with a Metrohm Dosimat 665 dosing unit controlled by LabView TM software. The multi-point titration; using 0.1N HCl titrant containing 35 g of sodium chloride per litre of acid; was performed in a temperature controlled flask held at 25 C with Gran endpoint determination. Measurements of a Certified reference material seawater (CRMs; Scripps Oceanographic Institution) were used for calibrating TA using daily duplicate CRM measurements. TA measurements were made from the same bottle sample as DIC after DIC had been measured.; Replicate information: 22%; Standardization description: Referenced to duplicate measurements of a CRM before each daily batch of samples; Standardization frequency: Daily; CRM manufacturer: Andrew Dickson; Scripps Oceanographic Institute; CRM batch number: 178; Preservation method: Mercuric chloride saturated solution; Preservative volume: 200 uL per 500 ml sample bottle = 0.04%; Preservative correction: 1.0004; Uncertainty: 5; Quality flag convention: Updated WOCE QC flags; 0 = Interpolated data; 1 = Not evaluated/quality unknown; 2 = Acceptable; 3 = Questionable; 4 = Known bad; 6 = Median of replicates; 9 = Missing value; Method reference: Dickson; A.G.; Sabine; C.L. and Christian; J.R. (Eds.) 2007. Guide to Best Practices for Ocean CO2 Measurements. PICES Special Publication 3; 191 pp.; https://cdiac.ess-dive.lbl.gov/ftp/oceans/Handbook_2007/Guide_all_in_one.pdf; Chapter 4; SOP 3b; Researcher name: Marty Davelaar; Danielle Caleb, Paul A. Covert; Researcher institution: Institute of Ocean Sciences Parameter or Variable: CTD Pressure; Abbreviation: CTDPRS; Unit: dbar; Observation type: Profile; Sampling instrument: Sea-Bird CTD SBE-911plus; Researcher name: Akash Sastri, Germaine Gatien; Researcher institution: Institute of Ocean Sciences Parameter or Variable: CTD Temperature; Abbreviation: CTDTMP; Unit: Degrees C; Observation type: Profile; Sampling instrument: Sea-Bird CTD SBE-911plus; Researcher name: Akash Sastri, Germaine Gatien; Researcher institution: Institute of Ocean Sciences Parameter or Variable: CTD Salinity; Abbreviation: CTDSAL; Unit: PSS78; Observation type: Profile; Sampling instrument: Sea-Bird CTD SBE-911plus; Researcher name: Akash Sastri, Germaine Gatien; Researcher institution: Institute of Ocean Sciences Parameter or Variable: Bottle Salinity; Abbreviation: SALINITY; Unit: PSS78; Observation type: Profile; Sampling instrument: Niskin bottle 10 L; Analyzing instrument: Guildline 8400B Salinometer (S/N 68572); Detailed sampling and analyzing information: Salinity samples were collected in 200 mL type ll glass bottles with disposable plastic inserts and screw caps supplied by Ocean Scientific International Limited. They were analyzed in a temperature-controlled lab on a Guildline 8400B Salinometer (S/N 68572) standardized with IAPSO standard seawater.; Quality flag convention: Updated WOCE QC flags; 0 = Interpolated data; 1 = Not evaluated/quality unknown; 2 = Acceptable; 3 = Questionable; 4 = Known bad; 6 = Median of replicates; 9 = Missing value; Researcher name: Jasmine Wietzke; Researcher institution: Institute of Ocean Sciences Parameter or Variable: Dissolved Oxygen; Abbreviation: OXYGEN; Unit: µmol/kg; Observation type: Profile; Sampling instrument: Niskin bottle 10 L; Analyzing instrument: Metrohm Dosimat model 665 for titrations; Dosimat model 865 for dispensing standards and a PC950 Colorimeter controlled by AutoOxy software V3.4; Detailed sampling and analyzing information: Oxygen samples were analyzed at sea using an automated Winkler titration system with modifications based on Carpenter (1965) and adhering to WOCE protocols; Quality flag convention: Updated WOCE QC flags; 0 = Interpolated data; 1 = Not evaluated/quality unknown; 2 = Acceptable; 3 = Questionable; 4 = Known bad; 6 = Median of replicates; 9 = Missing value; Method reference: Carpenter; J.H. 1965. The Chesapeake Bay Institute Technique for the Winkler Dissolved Oxygen Method. Limmnol. & Oceanogr.; 10: 141-143 Culberson; C.H. 1991. Dissolved oxygen. WOCE Hydrographic Programme Operations and Methods (July 1991). 15pp.); Researcher name: Mark Belton; Nina Nemcek; Kenny Scozzafava; Researcher institution: Institute of Ocean Sciences Parameter or Variable: Nitrate plus Nitrite; Abbreviation: NITRATE_NITRITE; Unit: µmol/kg; Observation type: Profile; Sampling instrument: Niskin bottle 10 L; Analyzing instrument: Astoria analyzer; Detailed sampling and analyzing information: Nutrient samples were collected in plastic tubes and quick frozen in aluminum blocks stored in a -20C freezer. All analysis was performed on frozen samples.; Quality flag convention: Updated WOCE QC flags; 0 = Interpolated data; 1 = Not evaluated/quality unknown; 2 = Acceptable; 3 = Questionable; 4 = Known bad; 6 = Median of replicates; 9 = Missing value; Method reference: Barwell-Clarke; J. and Whitney; F. 1996. Institute of Ocean Sciences Nutrient Methods and Analysis. Canadian Technical Report of Hydrography and Ocean Sciences; No. 182; 43 pp.; Researcher name: Mark Belton; Researcher institution: Institute of Ocean Sciences Parameter or Variable: Silicic acid; Abbreviation: SILICATE; Unit: µmol/kg; Observation type: Profile; Sampling instrument: Niskin bottle 10 L; Analyzing instrument: Astoria analyzer; Detailed sampling and analyzing information: Nutrient samples were collected in plastic tubes and quick frozen in aluminum blocks stored in a -20C freezer. All analysis was performed on frozen samples; Quality flag convention: Updated WOCE QC flags; 0 = Interpolated data; 1 = Not evaluated/quality unknown; 2 = Acceptable; 3 = Questionable; 4 = Known bad; 6 = Median of replicates; 9 = Missing value; Method reference: Barwell-Clarke; J. and Whitney; F. 1996. Institute of Ocean Sciences Nutrient Methods and Analysis. Canadian Technical Report of Hydrography and Ocean Sciences; No. 182; 43 pp.; Researcher name: Mark Belton; Researcher institution: Institute of Ocean Sciences Parameter or Variable: Phosphate; Abbreviation: PHOSPHATE; Unit: µmol/kg; Observation type: Profile; Sampling instrument: Niskin bottle 10 L; Analyzing instrument: Astoria analyzer; Detailed sampling and analyzing information: Nutrient samples were collected in plastic tubes and quick frozen in aluminum blocks stored in a -20C freezer. All analysis was performed on frozen samples; Quality flag convention: Updated WOCE QC flags; 0 = Interpolated data; 1 = Not evaluated/quality unknown; 2 = Acceptable; 3 = Questionable; 4 = Known bad; 6 = Median of replicates; 9 = Missing value; Method reference: Barwell-Clarke; J. and Whitney; F. 1996. Institute of Ocean Sciences Nutrient Methods and Analysis. Canadian Technical Report of Hydrography and Ocean Sciences; No. 182; 43 pp.; Researcher name: Mark Belton; Researcher institution: Institute of Ocean Sciences Parameter or Variable: Ammonium; Abbreviation: AMMONIUM; Unit: µmol/kg; Observation type: Profile; Sampling instrument: Niskin bottle 10 L; Analyzing instrument: TD 700 Fluorometer; Detailed sampling and analyzing information: The ammonium method used at IOS is a simplification of the fluorometric technique of Holmes et al, 1999. This method applies to a wide range of ammonium concentrations, uses the addition of a single working reagent and reduces contamination. Typically, samples are collected during the day and stored in the cold room. The working reagent is added to standards and samples at the same time, and the fluorescence is read approximately 8 hours later using a calibrated TD 700 Fluorometer. Standards are made in LNSW colelcted at 250 m stn LB14; Quality flag convention: Updated WOCE QC flags; 0 = Interpolated data; 1 = Not evaluated/quality unknown; 2 = Acceptable; 3 = Questionable; 4 = Known bad; 6 = Median of replicates; 9 = Missing value; Method reference: Holmes, R.M., Aminot, A., Kerouel, R., Hooker, B.A., and Peterson, B.J. (1999) A simple and precise method for measuring ammonium in marine and freshwater ecosystems. Can. J. Fish. Aquat. Sci., 56 1801-1808.; Researcher name: Nina Nemcek; Mark Belton; Researcher institution: Institute of Ocean Sciences asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian bottle bottle any type of water bottle sampling device Generic name for water collection device; usually used to determine temperature, salinity and provide water aliquots for measurement of a wide range of parameters; often referred to by a specific type of water sampling bottle, such as a Nansen or Niskin bottle. CTD CTD Conductivity-Temperature-Depth probe JOHN P. TULLY JOHN P. TULLY