Carbon-13 Isotopic Abundance and Concentration of Atmospheric Methane for Background Air in the Southern and Northern Hemispheres from 1978 to 1989 (NDP-049)

Stevens, C. M.

doi:10.3334/CDIAC/atg.ndp049

Title: Carbon-13 Isotopic Abundance and Concentration of Atmospheric Methane for Background Air in the Southern and Northern Hemispheres from 1978 to 1989 (NDP-049)

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Abstract

This data package presents atmospheric CH4 concentration and 13C isotopic abundance data derived from air samples collected over the period 1978-1989 at globally distributed clean-air sites. The data set comprises 201 records, 166 from the Northern Hemisphere and 35 from the Southern Hemisphere. The air samples were collected mostly in rural or marine locations remote from large sources of CH4 and are considered representative of tropospheric background conditions. The air samples were processed by isolation of CH4 from air and conversion to CO2 for isotopic analysis by isotope ratio mass spectrometry. These data represent one of the earliest records of 13C isotopic yy!measurements for atmospheric methane and have been used to refine estimates of CH4 emissions, calculate annual growth rates of emissions from changing sources, and provide evidence for changes in the rate of atmospheric removal of CH4. The data records consist of sample collection date; number of samples combined for analysis; sampling location; analysis date; CH4 concentration; 13C isotopic abundance; and flag codes to indicate outliers, repeated analyses, and other information.For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/ndps/ndp049.html

Authors:

Stevens, C. M.

Argonne National Laboratory, Chemical Technology Division

Publication Date:: Sun Jan 01 00:00:00 EST 1995

Other Number(s):: osti:1394546; doi:10.3334/CDIAC/ATG.NDP049; cdiac:doi 10.3334/CDIAC/atg.ndp049

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:: 13C Isotopic Abundance Data; atmospheric CH4 Concentration; Carbon-13; Atmospheric Methane; Methane; Stevens; Argonne National Laboratory; Southern Hemisphere; Northern Hemisphere; NDP-049; Analysis date (Year Month and Day); Atmospheric C13 in CH4 levels (per mil) and corrected delta C13 levels (per mil); Data quality flag; Sample #; Sampling date (Year Month and Day); Sampling location (Location; Latitude and Longitude Coordinates)

Geolocation:: 70.0,148.75|-89.98,148.75|-89.98,-170.57|70.0,-170.57|70.0,148.75

OSTI Identifier:: 1394546

DOI:: https://doi.org/10.3334/CDIAC/atg.ndp049

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Citation Formats


                    Stevens, C. M. Carbon-13 Isotopic Abundance and Concentration of Atmospheric Methane for Background Air in the Southern and Northern Hemispheres from 1978 to 1989 (NDP-049).  United States: N. p., 1995. 
        Web.  doi:10.3334/CDIAC/atg.ndp049.

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                    Stevens, C. M. Carbon-13 Isotopic Abundance and Concentration of Atmospheric Methane for Background Air in the Southern and Northern Hemispheres from 1978 to 1989 (NDP-049).  United States.  doi:https://doi.org/10.3334/CDIAC/atg.ndp049

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                    Stevens, C. M. 1995.  
"Carbon-13 Isotopic Abundance and Concentration of Atmospheric Methane for Background Air in the Southern and Northern Hemispheres from 1978 to 1989 (NDP-049)".  United States.  doi:https://doi.org/10.3334/CDIAC/atg.ndp049.  https://www.osti.gov/servlets/purl/1394546. Pub date:Sun Jan 01 00:00:00 EST 1995

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@article{osti_1394546,

  title        = {Carbon-13 Isotopic Abundance and Concentration of Atmospheric Methane for Background Air in the Southern and Northern Hemispheres from 1978 to 1989 (NDP-049)},

  author       = {Stevens, C. M.},

  abstractNote = {This data package presents atmospheric CH4 concentration and 13C isotopic abundance data derived from air samples collected over the period 1978-1989 at globally distributed clean-air sites. The data set comprises 201 records, 166 from the Northern Hemisphere and 35 from the Southern Hemisphere. The air samples were collected mostly in rural or marine locations remote from large sources of CH4 and are considered representative of tropospheric background conditions. The air samples were processed by isolation of CH4 from air and conversion to CO2 for isotopic analysis by isotope ratio mass spectrometry. These data represent one of the earliest records of 13C isotopic yy!measurements for atmospheric methane and have been used to refine estimates of CH4 emissions, calculate annual growth rates of emissions from changing sources, and provide evidence for changes in the rate of atmospheric removal of CH4. The data records consist of sample collection date; number of samples combined for analysis; sampling location; analysis date; CH4 concentration; 13C isotopic abundance; and flag codes to indicate outliers, repeated analyses, and other information.For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/ndps/ndp049.html},

  doi          = {10.3334/CDIAC/atg.ndp049},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun Jan 01 00:00:00 EST 1995},

  month        = {Sun Jan 01 00:00:00 EST 1995}

}

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DOI: https://doi.org/10.3334/CDIAC/atg.ndp049

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