Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983)

Neftel, A.; Friedli, H.; Moor, E.; Lotscher, H.; Oeschger, H.; Siegenthaler, U.; Stauffer, B.

doi:10.3334/CDIAC/ATG.010

Title: Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983)

Dataset
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Abstract

Determinations of ancient atmospheric CO2 concentrations for Siple Station, located in West Antarctica, were derived from measurements of air occluded in a 200-m core drilled at Siple Station in the Antarctic summer of 1983-84. The core was drilled by the Polar Ice Coring Office in Nebraska and the Physics Institute at the University of Bern. The ice could be dated with an accuracy of approximately ±2 years to a depth of 144 m (which corresponds to the year 1834) by counting seasonal variations in electrical conductivity. Below that depth, the core was dated by extrapolation (Friedli et al. 1986). The gases from ice samples were extracted by a dry-extraction system, in which bubbles were crushed mechanically to release the trapped gases, and then analyzed for CO2 by infrared laser absorption spectroscopy or by gas chromatography (Neftel et al. 1985). After the ice samples were crushed, the gas expanded over a cold trap, condensing the water vapor at -80°C in the absorption cell. The analytical system was calibrated for each ice sample measurement with a standard mixture of CO2 in nitrogen and oxygen. For further details on the experimental and dating procedures, see Neftel et al. (1985), Friedli et al. (1986),more »« less

Authors:

Neftel, A.; Friedli, H.; Moor, E.; Lotscher, H.; Oeschger, H.; Siegenthaler, U.; Stauffer, B.

University of Bern, Physics Institute

Publication Date:: Mon Jul 07 00:00:00 EDT 1997

Other Number(s):: osti:1394153; doi:10.3334/CDIAC/ATG.010; cdiac:doi 10.3334/CDIAC/cli.010

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 CO2 concentrations; ice core; Siple Station; Antarctica; Atmospheric CO2 Mixing Ratio; Historical Atmospheric CO2 Concentration; TRENDS-CO2; CO2 concentration; date air enclosed; date of ice; depth; samples measured

Geolocation:: -75.917,-83.917|-75.917,-83.917|-75.917,-83.917|-75.917,-83.917|-75.917,-83.917

OSTI Identifier:: 1394153

DOI:: https://doi.org/10.3334/CDIAC/ATG.010

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Citation Formats


                    Neftel, A., Friedli, H., Moor, E., Lotscher, H., Oeschger, H., Siegenthaler, U., and Stauffer, B. Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983).  United States: N. p., 1997. 
        Web.  doi:10.3334/CDIAC/ATG.010.

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                    Neftel, A., Friedli, H., Moor, E., Lotscher, H., Oeschger, H., Siegenthaler, U., & Stauffer, B. Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983).  United States.  doi:https://doi.org/10.3334/CDIAC/ATG.010

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                    Neftel, A., Friedli, H., Moor, E., Lotscher, H., Oeschger, H., Siegenthaler, U., and Stauffer, B. 1997.  
"Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983)".  United States.  doi:https://doi.org/10.3334/CDIAC/ATG.010.  https://www.osti.gov/servlets/purl/1394153. Pub date:Mon Jul 07 00:00:00 EDT 1997

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@article{osti_1394153,

  title        = {Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983)},

  author       = {Neftel, A. and Friedli, H. and Moor, E. and Lotscher, H. and Oeschger, H. and Siegenthaler, U. and Stauffer, B.},

  abstractNote = {Determinations of ancient atmospheric CO2 concentrations for Siple Station, located in West Antarctica, were derived from measurements of air occluded in a 200-m core drilled at Siple Station in the Antarctic summer of 1983-84. The core was drilled by the Polar Ice Coring Office in Nebraska and the Physics Institute at the University of Bern. The ice could be dated with an accuracy of approximately ±2 years to a depth of 144 m (which corresponds to the year 1834) by counting seasonal variations in electrical conductivity. Below that depth, the core was dated by extrapolation (Friedli et al. 1986). The gases from ice samples were extracted by a dry-extraction system, in which bubbles were crushed mechanically to release the trapped gases, and then analyzed for CO2 by infrared laser absorption spectroscopy or by gas chromatography (Neftel et al. 1985). After the ice samples were crushed, the gas expanded over a cold trap, condensing the water vapor at -80°C in the absorption cell. The analytical system was calibrated for each ice sample measurement with a standard mixture of CO2 in nitrogen and oxygen. For further details on the experimental and dating procedures, see Neftel et al. (1985), Friedli et al. (1986), and Schwander and Stauffer (1984).For access to the data files, click this link to the CDIAC data transition website: http://cdiac.ess-dive.lbl.gov/trends/co2/siple.html},

  doi          = {10.3334/CDIAC/ATG.010},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Mon Jul 07 00:00:00 EDT 1997},

  month        = {Mon Jul 07 00:00:00 EDT 1997}

}

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DOI: https://doi.org/10.3334/CDIAC/ATG.010

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