Skip to main content
U.S. flag

An official website of the United States government

Atmospheric Histories (1765-2022) for CFC-11, CFC-12, CFC-113, CCl4, SF6 and N2O (NCEI Accession 0164584)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 03:00 AM | Dataset Last Updated: July 21, 2023 at 12:00 AM
It has been several years since Bullister (2015) prepared tables and figures of the annual mean tropospheric concentrations in the northern (NH) and southern (SH) hemispheres for the trace gases: CFC-11, CFC-12, CFC-113, carbon tetrachloride (CCl4), sulfur hexafluoride (SF6), and nitrous oxide (N2O). This is the first of periodic updates to the tables and figures compiled following similar methods with updated measurements from the community of scientists who monitor the global distributions of these compounds in the troposphere. The datafile, Tracer_atmospheric_histories_revised_2023_Table1.csv, and Table 1 list the annual mean tropospheric concentrations of CFC-11, CFC-12, CFC-113, CCl4, SF6, and N2O in the northern and southern hemispheres (NH, SH) from 1765.5 to 2022.5. The reported values are the annual (Jan-Dec) mean mole fraction of these gases in dry air. Concentrations are in parts per trillion (ppt) for CFC-11, CFC-12, CFC-113, CCl4, and SF6; and in parts per billion (ppb) for N2O.

Resources

11 resources available

  • Project Metadata

    TEXT/HTML
    Visit Page

  • NCEI Dataset Landing Page

    PLACEHOLDER/VALUE
    Download

  • Descriptive Information

    TEXT/HTML
    Visit Page

  • HTTPS

    TEXT/HTML
    Visit Page

  • FTP

    TEXT/HTML
    Visit Page

  • http://www.wmo.int/pages/prog/arep/gaw/documents/GGMT2017_T03_Krummel.pdf

    PDF
    Download

  • https://doi.org/10.5194/acp-13-2691-2013

    TEXT/HTML
    Visit Page

  • https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/CFC_ATM_Hist2015.html

    TEXT/HTML
    Visit Page

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

    TEXT/HTML
    Visit Page

  • GCMD Keyword Forum Page

    TEXT/HTML
    Visit Page

  • NCEI Contact Information

    TEXT/HTML
    Visit Page

Find Related Datasets

Search by Tags

Click any tag below to search for similar datasets

0164584 CHLOROFLUOROCARBON (CFC) sulfur hexafluoride (SF6) titrator chemical meteorological VARIOUS CHARTERED VESSELS NOAA Pacific Marine Environmental Laboratory

Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
{
  "fn": "NOAA National Centers for Environmental Information",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:ncei.info@noaa.gov"
}
describedByType application/octet-steam
description It has been several years since Bullister (2015) prepared tables and figures of the annual mean tropospheric concentrations in the northern (NH) and southern (SH) hemispheres for the trace gases: CFC-11, CFC-12, CFC-113, carbon tetrachloride (CCl4), sulfur hexafluoride (SF6), and nitrous oxide (N2O). This is the first of periodic updates to the tables and figures compiled following similar methods with updated measurements from the community of scientists who monitor the global distributions of these compounds in the troposphere. The datafile, Tracer_atmospheric_histories_revised_2023_Table1.csv, and Table 1 list the annual mean tropospheric concentrations of CFC-11, CFC-12, CFC-113, CCl4, SF6, and N2O in the northern and southern hemispheres (NH, SH) from 1765.5 to 2022.5. The reported values are the annual (Jan-Dec) mean mole fraction of these gases in dry air. Concentrations are in parts per trillion (ppt) for CFC-11, CFC-12, CFC-113, CCl4, and SF6; and in parts per billion (ppb) for N2O.
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "Project Metadata",
    "accessURL": "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0164584.html",
    "mediaType": "text/html",
    "description": "Navigate directly to the URL for a descriptive web page with download links.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "NCEI Dataset Landing Page",
    "mediaType": "placeholder/value",
    "description": "Navigate directly to the URL for a descriptive web page with download links.",
    "downloadURL": "https://doi.org/10.3334/cdiac/otg.cfc_atm_hist_2015",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Descriptive Information",
    "accessURL": "https://www.ncei.noaa.gov/archive/accession/oas/164584",
    "mediaType": "text/html",
    "description": "Navigate directly to the URL for a descriptive web page with download links.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "HTTPS",
    "accessURL": "https://www.ncei.noaa.gov/archive/accession/download/164584",
    "mediaType": "text/html",
    "description": "Navigate directly to the URL for data access and direct download.",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "FTP",
    "accessURL": "ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0110/0164584/",
    "mediaType": "text/html",
    "description": "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).",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "http://www.wmo.int/pages/prog/arep/gaw/documents/GGMT2017_T03_Krummel.pdf",
    "format": "PDF",
    "mediaType": "application/pdf",
    "description": "Related resource",
    "downloadURL": "http://www.wmo.int/pages/prog/arep/gaw/documents/GGMT2017_T03_Krummel.pdf",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://doi.org/10.5194/acp-13-2691-2013",
    "accessURL": "https://doi.org/10.5194/acp-13-2691-2013",
    "mediaType": "text/html",
    "description": "related journal article",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/CFC_ATM_Hist2015.html",
    "accessURL": "https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/CFC_ATM_Hist2015.html",
    "mediaType": "text/html",
    "description": "Related resource",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system",
    "accessURL": "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system",
    "mediaType": "text/html",
    "description": "OCADS website",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "GCMD Keyword Forum Page",
    "accessURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
    "mediaType": "text/html",
    "description": "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",
    "describedByType": "application/octet-stream"
  },
  {
    "@type": "dcat:Distribution",
    "title": "NCEI Contact Information",
    "accessURL": "https://www.ncei.noaa.gov/contact",
    "mediaType": "text/html",
    "description": "Information for contacts at NCEI.",
    "describedByType": "application/octet-stream"
  }
]
identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0164584.xml
issued 2017-08-01T00:00:00.000+00:00
keyword 
[
  "0164584",
  "CHLOROFLUOROCARBON (CFC)",
  "sulfur hexafluoride (SF6)",
  "titrator",
  "chemical",
  "meteorological",
  "VARIOUS CHARTERED VESSELS",
  "NOAA Pacific Marine Environmental Laboratory",
  "NOAA Pacific Marine Environmental Laboratory",
  "Climate Variability and Predictability (CLIVAR)",
  "World Ocean Circulation Experiment (WOCE)",
  "World-Wide Distribution",
  "oceanography",
  "DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce",
  "CLIVAR > Climate Variability",
  "WOCE > World Ocean Circulation Experiment",
  "Ocean Carbon and Acidification Data System (OCADS) Project",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > HALOCARBONS AND HALOGENS > CHLOROFLUOROCARBONS",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > DISSOLVED GASES",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > HYDROCARBONS",
  "Atmospheric measurement",
  "Data synthesis product",
  "Atmospheric Histories (1765-2015) for CFC-11, CFC-12, CFC-113, CCl4, SF6 and N2O",
  "CFC_ATM_Hist",
  "NDP-095",
  "CFC-11, CFC-12, CFC-113, CCl4",
  "N2O",
  "SF6",
  "GEOGRAPHIC REGION > GLOBAL OCEAN",
  "World-Wide Distribution"
]
landingPage https://www.ncei.noaa.gov/contact
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2023-07-21T00:00:00.000+00:00
publisher 
{
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
}
references 
[
  "http://www.wmo.int/pages/prog/arep/gaw/documents/GGMT2017_T03_Krummel.pdf",
  "https://doi.org/10.5194/acp-13-2691-2013",
  "https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/CFC_ATM_Hist2015.html",
  "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system"
]
rights otherRestrictions
spatial 180.0,-90.0,-180.0,90.0
temporal 1765-01-01T00:00:00+00:00/2022-06-01T00:00:00+00:00
theme 
[
  "geospatial"
]
title Atmospheric Histories (1765-2022) for CFC-11, CFC-12, CFC-113, CCl4, SF6 and N2O (NCEI Accession 0164584)

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov