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Dataset Overview | National Centers for Environmental Information (NCEI)

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

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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.
  • Cite as: Bullister, John L.; Warner, Mark J. (2017). Atmospheric Histories (1765-2022) for CFC-11, CFC-12, CFC-113, CCl4, SF6 and N2O (NCEI Accession 0164584). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.cfc_atm_hist_2015. Accessed [date].
gov.noaa.nodc:0164584
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Distribution Formats
  • Originator data format
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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 1765-01-01 to 2022-06-01
Spatial Bounding Box Coordinates
West: -180
East: 180
South: -90
North: 90
Spatial Coverage Map
General Documentation
Associated Resources
  • Krummel, P., Montzka, S., Harth, C., Miller, B., Mühle, J., Dlugokencky, E., Salameh, P., Hall, B., O'Doherty, S., Steele, L., Dutton, G., Young, D., Nance, J., Langenfelds, R., Elkins, J., Loh, Z., Lunder, C., Fraser, P., Derek, N., Mitrevski, B., Weiss, R., and Prinn, R.: An update of comparisons of non-CO2 trace gas measurements between AGAGE and NOAA at common sites, in: 19th WMO/IAEA Meeting on Carbon Dioxide, Other Greenhouse Gases, and Related Measurement Techniques (GGMT-2017), Dübendorf, Switzerland, available at: http://www.wmo.int/pages/prog/arep/gaw/documents/GGMT2017_T03_Krummel.pdf (last access: 16 January 2018), 2017.
  • Rigby, M., Prinn, R. G., O’Doherty, S., Montzka, S. A., McCulloch, A., Harth, C. M., Mühle, J., Salameh, P. K., Weiss, R. F., Young, D., Simmonds, P.G., Hall, B. D., Dutton, G.S., Nance, D., Mondeel, D.J., Elkins, J. W., Krummel, P. B., Steele, L.P., and Fraser, P.J. (2013) Re-evaluation of the lifetimes of the major CFCs and CH3CCl3 using atmospheric trends. Atmos. Chem. Phys., 13, 2691-2702. https://doi.org/10.5194/acp-13-2691-2013
  • Atmospheric Histories (1765-2022) for CFC-11, CFC-12, CFC-113, CCl4, SF6 and N2O (NCEI Accession 0164584)
  • 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
Publication Dates
  • publication: 2017-08-04
  • revision: 2023-07-21
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 This dataset is available to the public for a wide variety of uses including scientific research and analysis.
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: Bullister, John L.; Warner, Mark J. (2017). Atmospheric Histories (1765-2022) for CFC-11, CFC-12, CFC-113, CCl4, SF6 and N2O (NCEI Accession 0164584). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.cfc_atm_hist_2015. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Publishers
Acknowledgments
  • Funding Information: NOAA
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords OCADS Study Type
  • Atmospheric measurement
  • Data synthesis product
Originator Keywords
  • Atmospheric Histories (1765-2015) for CFC-11, CFC-12, CFC-113, CCl4, SF6 and N2O
  • CFC_ATM_Hist
  • NDP-095
Provider Variable Abbreviations
  • CFC-11, CFC-12, CFC-113, CCl4
  • N2O
  • SF6
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords Provider Geographic Names
  • World-Wide Distribution
Project keywords NODC PROJECT NAMES THESAURUS Global Change Master Directory (GCMD) Project Keywords Ocean Acidification Search Keywords
  • Ocean Carbon and Acidification Data System (OCADS) Project
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Bullister, John L.; Warner, Mark J. (2017). Atmospheric Histories (1765-2022) for CFC-11, CFC-12, CFC-113, CCl4, SF6 and N2O (NCEI Accession 0164584). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.cfc_atm_hist_2015. 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
  • 2017-08-04T23:36:17Z - NCEI Accession 0164584 v1.1 was published.
  • 2023-07-21T17:25:33Z - NCEI Accession 0164584 was revised and v2.2 was published.
    Rationale: Updates were received for this dataset. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: CFC-11, CFC-12, CFC-113, CCl4; Abbreviation: CFC-11, CFC-12, CFC-113, CCl4; Detailed sampling and analyzing information: The concentrations for CFC-11, CFC-12, CFC-113, and CCl4 listed in Table 1 for 1910.5 – 2008.5 are from the 2009 update of the Walker et al. (2000) results found at bluemoon.ucsd.edu/pub/cfchist. The concentrations for these trace gases from 2009.5 to 2022.5 are derived from the NOAA gas sampling program formerly known as CMDL, now known as GML (Global Monitoring Laboratory). These NOAA data are tabulated through Feb. 2023 (as of June 2023) and can be located in the subdirectories of https://gml.noaa.gov/aftp/data/hats/. Following the procedure of Bullister (2017), the changes in the annual average (Jan-Dec) concentrations of the trace gases in ppt were added to the Walker et al. data. The sum of the changes in concentrations between 2008.5 and 2019.5 in the GML data set are slightly different than the differences in the global mean concentrations reported by the AGAGE measurement program (https://agage2.eas.gatech.edu/data_archive/global_mean/) which may indicate a small systematic offset. These differences are consistent with those reported by Rigby et al. (2013) for the earlier part of this time period..
  • Parameter or Variable: SF6; Abbreviation: SF6; Detailed sampling and analyzing information: Bullister (2017) normalized the cumulative production and release estimates of this compound to the measured atmospheric concentrations of this tracer in the Northern and Southern Hemispheres in June 1995 by the NOAA gas sampling program – currently found at https://gml.noaa.gov/aftp/hats/sf6/combined/HATS_global_SF6.txt. In Table 1, the SF6 values from 1996.5 to 2022.5 are the mean annual NH and SH values reported by GML. Note that the GML concentrations are now reported on the NOAA 2014 scale, instead of the CMDL2006 scale as in Bullister (2017). Although the conversion between the two NOAA scales requires solving a quadratic equation (see https://gml.noaa.gov/ccl/sf6_scale.html) to revert to the CMDL 2006 scale, Krummell et al. (2017) reported that NOAA 2014/ SIO 2005 = 1.002 (± 0.002). The SF6 data in Table 1 are reported on the SIO2005 scale using this conversion factor. The AGAGE program reports SF6 concentrations beginning in 2004. A comparison of the increase in reported atmospheric concentrations between 2004.5 and 2020.5 differ by less than 0.20 ppt between AGAGE (increase of 4.88 ppt in 16 y) and GML (increase of 4.76 ppt (NH) and 4.68 ppt (SH) in 16 y)..
  • Parameter or Variable: N2O; Abbreviation: N2O; Detailed sampling and analyzing information: Bullister (2017) fitted a linear non-polynomial function to the combined ice core measurements (1502-1996) and CMDL atmospheric measurements (1978-2015) of N2O concentrations. In the plots of the residuals of the data to this fit (Figs. 10 and 11, Bullister 2017), there appears to be a slight positive bias in the most recent atmospheric measurements. In this update, the N2O concentrations reported in Table 1 after 2010.5 are the annual averages from the GML data (https://gml.noaa.gov/aftp/data/hats/n2o/combined/), although the data prior to 2010.5 are calculated from the fitted data through 2015.5. The difference in N2O values in Table 1 from those in Table 1 of Bullister (2017) for 2010.5 to 2015.5 are (in ppb). .
Acquisition Information (collection)
Instrument
  • titrator
Platform
  • VARIOUS CHARTERED VESSELS
Last Modified: 2024-02-09T00:13:45Z
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