Atmospheric Methane Mixing Ratios--The NOAA/CMDL Global Cooperative Air Sampling Network, 1983-1993

Dlugokencky, E. J.; Lang, P. M.; Masarie, K. A.; Steele, L. P.

doi:10.3334/CDIAC/ATG.DB1008

Title: Atmospheric Methane Mixing Ratios--The NOAA/CMDL Global Cooperative Air Sampling Network, 1983-1993

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Abstract

This data base presents atmospheric methane (CH4) mixing ratios from flask air samples collected over the period 1983-1993 by the National Oceanic and Atmospheric Administration, Climate Monitoring and Diagnostics Laboratory's (NOAA/CMDL's) global cooperative air sampling network. Air samples were collected approximately once per week at 44 fixed sites (37 of which were still active at the end of 1993). Samples were also collected at 5 degree latitude intervals along shipboard cruise tracks in the Pacific Ocean between North America and New Zealand (or Australia) and at 3 degree latitude intervals along cruise tracks in the South China Sea between Singapore and Hong Kong. The shipboard measurements were made approximately every 3 weeks per latitude zone by each of two ships in the Pacific Ocean and approximately once every week per latitude zone in the South China Sea. All samples were analyzed for CH4 at the NOAA/CMDL laboratory in Boulder, Colorado, by gas chromatography with flame ionization detection, and each aliquot was referenced to the NOAA/CMDL methane standard scale. In addition to providing the complete set of atmospheric CH4 measurements from flask air samples collected at the NOAA/CMDL network sites, this data base also includes files which list monthly mean mixingmore »« less

Authors:

Dlugokencky, E. J.; Lang, P. M.; Masarie, K. A.; Steele, L. P.

National Oceanic and Atmospheric Administration, Climate Monitoring and Diagnostics Laboratory
CSIRO , Division of Atmospheric Research

Publication Date:: Sat Jan 01 00:00:00 EST 1994

Other Number(s):: osti:1389374; doi:10.3334/CDIAC/ATG.DB1008; cdiac:doi 10.3334/CDIAC/atg.db1008

Research Org.:: Environmental System Science Data Infrastructure for a Virtual Ecosystem (ESS-DIVE) (United States)

Sponsoring Org.:: U.S. DOE > Office of Science (SC) > Biological and Environmental Research (BER) (SC-23)

Subject:: 54 ENVIRONMENTAL SCIENCES

Keywords:: Atmospheric Methane Mixing Ratios; Analysis Date; Atmospheric Methane; CH4; Flask Samples; Monthly Averages; Gas Chromatograph; Sampling Date; Sampling Time; Sampling Method; Sampling Site; Selection Criteria; Data Quality Flags; DB1008; Site; Collyr; Collmo; Collda; Collmhr; ollmn; id; Method; ch4; select; instr; analyr; analmo; analda; rawfile; nth; total; year; meth2; meth3; meth4; meth5; meth6; meth7meth8; meth9; meth10; meth11; meth12; lat; hemi

Geolocation:: 90.0,180.0|-90.0,180.0|-90.0,-180.0|90.0,-180.0|90.0,180.0

OSTI Identifier:: 1389374

DOI:: https://doi.org/10.3334/CDIAC/ATG.DB1008

Project Location:

Citation Formats


                    Dlugokencky, E. J., Lang, P. M., Masarie, K. A., and Steele, L. P. Atmospheric Methane Mixing Ratios--The NOAA/CMDL Global Cooperative Air Sampling Network, 1983-1993.  United States: N. p., 1994. 
        Web.  doi:10.3334/CDIAC/ATG.DB1008.

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                    Dlugokencky, E. J., Lang, P. M., Masarie, K. A., & Steele, L. P. Atmospheric Methane Mixing Ratios--The NOAA/CMDL Global Cooperative Air Sampling Network, 1983-1993.  United States.  doi:https://doi.org/10.3334/CDIAC/ATG.DB1008

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                    Dlugokencky, E. J., Lang, P. M., Masarie, K. A., and Steele, L. P. 1994.  
"Atmospheric Methane Mixing Ratios--The NOAA/CMDL Global Cooperative Air Sampling Network, 1983-1993".  United States.  doi:https://doi.org/10.3334/CDIAC/ATG.DB1008.  https://www.osti.gov/servlets/purl/1389374. Pub date:Sat Jan 01 00:00:00 EST 1994

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@article{osti_1389374,

  title        = {Atmospheric Methane Mixing Ratios--The NOAA/CMDL Global Cooperative Air Sampling Network, 1983-1993},

  author       = {Dlugokencky, E. J. and Lang, P. M. and Masarie, K. A. and Steele, L. P.},

  abstractNote = {This data base presents atmospheric methane (CH4) mixing ratios from flask air samples collected over the period 1983-1993 by the National Oceanic and Atmospheric Administration, Climate Monitoring and Diagnostics Laboratory's (NOAA/CMDL's) global cooperative air sampling network. Air samples were collected approximately once per week at 44 fixed sites (37 of which were still active at the end of 1993). Samples were also collected at 5 degree latitude intervals along shipboard cruise tracks in the Pacific Ocean between North America and New Zealand (or Australia) and at 3 degree latitude intervals along cruise tracks in the South China Sea between Singapore and Hong Kong. The shipboard measurements were made approximately every 3 weeks per latitude zone by each of two ships in the Pacific Ocean and approximately once every week per latitude zone in the South China Sea. All samples were analyzed for CH4 at the NOAA/CMDL laboratory in Boulder, Colorado, by gas chromatography with flame ionization detection, and each aliquot was referenced to the NOAA/CMDL methane standard scale. In addition to providing the complete set of atmospheric CH4 measurements from flask air samples collected at the NOAA/CMDL network sites, this data base also includes files which list monthly mean mixing ratios derived from the individual flask air measurements. These monthly summary data are available for 35 of the fixed sites and 21 of the shipboard sampling sites.For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/ndps/db1008.htmlThis dataset was transferred from the CDIAC Archive and published on ESS-DIVE in 2018 under the project title "Carbon Dioxide Information Analysis Center (CDIAC), Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Climate Monitoring and Diagnostics Laboratory (CMDL), National Oceanic and Atmospheric Administration (NOAA)". In 2023, the project title was updated to "Carbon Dioxide Information Analysis Center (CDIAC); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)" to enable consistent management of all datasets previously hosted by the CDIAC Archive that are now published on ESS-DIVE.},

  doi          = {10.3334/CDIAC/ATG.DB1008},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sat Jan 01 00:00:00 EST 1994},

  month        = {Sat Jan 01 00:00:00 EST 1994}

}

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DOI: https://doi.org/10.3334/CDIAC/ATG.DB1008

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