Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983)
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...
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ESS-DIVE: Deep Insight for Earth Science Data
1997
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dataone:ess-dive-a579484f8ed60cf-20180621T224147118 2023-11-08T14:14:13+01:00 Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983) A. Neftel H. Friedli E. Moor H. Lotscher H. Oeschger U. Siegenthaler B. Stauffer Siple Station,Antarctica ENVELOPE(-83.917,-83.917,-75.917,-75.917) BEGINDATE: 1734-01-01T00:00:00Z ENDDATE: 1983-12-31T00:00:00Z 1997-07-07T00:00:00Z https://search.dataone.org/view/ess-dive-a579484f8ed60cf-20180621T224147118 unknown ESS-DIVE: Deep Insight for Earth Science Data 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 Dataset 1997 dataone:urn:node:ESS_DIVE 2023-11-08T13:41:19Z 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 Dataset Antarc* Antarctic Antarctica ice core West Antarctica ESS-DIVE: Deep Insight for Earth Science Data (via DataONE) Antarctic Siple ENVELOPE(-83.917,-83.917,-75.917,-75.917) The Antarctic West Antarctica ENVELOPE(-83.917,-83.917,-75.917,-75.917) |
institution |
Open Polar |
collection |
ESS-DIVE: Deep Insight for Earth Science Data (via DataONE) |
op_collection_id |
dataone:urn:node:ESS_DIVE |
language |
unknown |
topic |
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 |
spellingShingle |
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 A. Neftel H. Friedli E. Moor H. Lotscher H. Oeschger U. Siegenthaler B. Stauffer Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983) |
topic_facet |
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 |
description |
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 |
format |
Dataset |
author |
A. Neftel H. Friedli E. Moor H. Lotscher H. Oeschger U. Siegenthaler B. Stauffer |
author_facet |
A. Neftel H. Friedli E. Moor H. Lotscher H. Oeschger U. Siegenthaler B. Stauffer |
author_sort |
A. Neftel |
title |
Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983) |
title_short |
Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983) |
title_full |
Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983) |
title_fullStr |
Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983) |
title_full_unstemmed |
Historical Carbon Dioxide Record from the Siple Station Ice Core (1734-1983) |
title_sort |
historical carbon dioxide record from the siple station ice core (1734-1983) |
publisher |
ESS-DIVE: Deep Insight for Earth Science Data |
publishDate |
1997 |
url |
https://search.dataone.org/view/ess-dive-a579484f8ed60cf-20180621T224147118 |
op_coverage |
Siple Station,Antarctica ENVELOPE(-83.917,-83.917,-75.917,-75.917) BEGINDATE: 1734-01-01T00:00:00Z ENDDATE: 1983-12-31T00:00:00Z |
long_lat |
ENVELOPE(-83.917,-83.917,-75.917,-75.917) ENVELOPE(-83.917,-83.917,-75.917,-75.917) |
geographic |
Antarctic Siple The Antarctic West Antarctica |
geographic_facet |
Antarctic Siple The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctica ice core West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica ice core West Antarctica |
_version_ |
1782011990249570304 |