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Nitrous Oxide and Nitrate Isotope discrete, profile measurements obtained during the NOAA Ship Ronald H. Brown cruise WCOA2021 (EXPOCODE 33RO20210613) in the North Pacific Ocean, US West Coast from 2021-06-13 to 2021-07-26 (NCEI Accession 0317020)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 27, 2026 at 09:48 PM | Dataset Last Updated: July 23, 2026 at 12:00 AM
This data package contains the discrete bottle (CTD profile) data of nitrous oxide (N2O) and nitrate (NO3) isotopes from the 2021 West Coast Ocean Acidification cruise. The cruise took place June 13 - July 26, 2021 aboard the NOAA Ship Ronald H. Brown. Samples were collected from Dana Point, California to Haida Gwaii, Canada. In this dataset, 70 unique stations were analyzed for N2O and NO3 isotopes. The dataset here was designed to obtain the first region-wide observations of N2O and NO3 isotopes throughout the California Current System (CCS) to understand the source of N2O in the CCS. This effort was conducted with the support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP).

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  • Project Metadata

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  • NCEI Dataset Landing Page

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  • Descriptive Information

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  • HTTPS

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  • FTP

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  • https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0260718.html

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  • https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system

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  • https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0288994.html

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  • https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/WCOA.html

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  • GCMD Keyword Forum Page

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  • NCEI Contact Information

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0317020 DELTA NITROGEN-15 Delta Oxygen-18 DISSOLVED OXYGEN HYDROSTATIC PRESSURE nitrous oxide (N2O) SALINITY SIGMA-THETA

Complete Metadata
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description This data package contains the discrete bottle (CTD profile) data of nitrous oxide (N2O) and nitrate (NO3) isotopes from the 2021 West Coast Ocean Acidification cruise. The cruise took place June 13 - July 26, 2021 aboard the NOAA Ship Ronald H. Brown. Samples were collected from Dana Point, California to Haida Gwaii, Canada. In this dataset, 70 unique stations were analyzed for N2O and NO3 isotopes. The dataset here was designed to obtain the first region-wide observations of N2O and NO3 isotopes throughout the California Current System (CCS) to understand the source of N2O in the CCS. This effort was conducted with the support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP).
distribution 
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0317020.xml
issued 2026-07-23T00:00:00.000+00:00
keyword 
[
  "0317020",
  "DELTA NITROGEN-15",
  "Delta Oxygen-18",
  "DISSOLVED OXYGEN",
  "HYDROSTATIC PRESSURE",
  "nitrous oxide (N2O)",
  "SALINITY",
  "SIGMA-THETA",
  "WATER TEMPERATURE",
  "CTD",
  "Niskin bottle",
  "oxygen sensor",
  "salinometer",
  "temperature sensor",
  "chemical",
  "discrete sample",
  "physical",
  "profile",
  "NOAA Ship Ronald H. Brown",
  "Stanford University",
  "Stanford University",
  "Ocean Carbon and Acidification Data System (OCADS)",
  "US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)",
  "Channel Islands National Marine Sanctuary",
  "Chumash Heritage National Marine Sanctuary",
  "Coastal Waters of Southeast Alaska and British Columbia",
  "Columbia River estuary - Washington/Oregon",
  "Greater Farallones National Marine Sanctuary",
  "Monterey Bay National Marine Sanctuary",
  "North Pacific Ocean",
  "Olympic Coast National Marine Sanctuary",
  "West Coast - US/Canada",
  "oceanography",
  "WCOA2021",
  "33RO20210613",
  "Ocean Acidification Program (OAP)",
  "Ocean Carbon and Acidification Data System (OCADS) Project",
  "Coastal",
  "NOAA Ocean Acidification Observing Network",
  "PMEL Sustained Ocean Acidification Large-Scale Survey Observations",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITROGEN",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN",
  "EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE",
  "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY",
  "Discrete Sample",
  "Profile",
  "CTDOXYGEN_UMOL_KG",
  "CTDPRESSURE_DBAR",
  "CTDSAL_PSS78",
  "CTDTMP_ITS90_DEG_C",
  "Pot_density",
  "d15n_alpha",
  "d15n_alpha_std",
  "d15n_beta",
  "d15n_beta_std",
  "d15n_bulk",
  "d15n_bulk_std",
  "d15n_no3",
  "d15n_no3_std",
  "d17o_N2O",
  "d17o_N2O_std",
  "d18o_N2O",
  "d18o_N2O_std",
  "d18o_no3",
  "d18o_no3_std",
  "n2o_conc",
  "n2o_conc_error",
  "sp",
  "sp_std",
  "CTD > Conductivity, Temperature, Depth",
  "NISKIN BOTTLES",
  "OXYGEN METERS > OXYGEN METERS",
  "SALINOMETERS",
  "TEMPERATURE SENSORS > TEMPERATURE SENSORS",
  "Ships",
  "Ronald H. Brown (call sign: WTEC, ICES code: 33RO, 1997-)",
  "OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN",
  "British Columbia",
  "California Current Ecosystem",
  "Canada",
  "North Pacific Ocean",
  "Southern California Bight",
  "U.S. West Coast"
]
landingPage https://www.ncei.noaa.gov/contact
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2026-07-23T00:00:00.000+00:00
publisher 
{
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
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references 
[
  "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0260718.html",
  "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system",
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rights otherRestrictions
spatial -117.75,32.08,-130.85,52.4
temporal 2021-06-25T00:00:00+00:00/2021-07-26T00:00:00+00:00
theme 
[
  "geospatial"
]
title Nitrous Oxide and Nitrate Isotope discrete, profile measurements obtained during the NOAA Ship Ronald H. Brown cruise WCOA2021 (EXPOCODE 33RO20210613) in the North Pacific Ocean, US West Coast from 2021-06-13 to 2021-07-26 (NCEI Accession 0317020)

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