Firn Air Inert Gas and Oxygen Observations from Siple Dome, 1996, and the South Pole, 2001
Data DOI:
https://doi.org/10.7265/N5FJ2DQC
Cite as
Severinghaus, J. P., Battle, M., & Bender, M. (2006) "Firn Air Inert Gas and Oxygen Observations from Siple Dome, 1996, and the South Pole, 2001" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.7265/N5FJ2DQC.
AMD - DIF Record(s)
Abstract
This data set includes gas ratios in polar firn air: O<sub>2</sub>/N<sub>2</sub>, <sup>15</sup>N/<sup>14</sup>N, <sup>40</sup>Ar/N<sub>2</sub>, <sup>40</sup>Ar/<sup>36</sup>Ar, <sup>40</sup>Ar/<sup>38</sup>Ar, <sup>84</sup>Kr/<sup>36</sup>Ar, <sup>132</sup>Xe/<sup>36</sup>Ar, and <sup>22</sup>Ne/<sup>36</sup>Ar. Investigators sampled air from the permeable snowpack (firn) layer at two sites: Siple Dome, Antarctica in 1996 and at the South Pole in 2001. They observed and modeled the processes of gravitational settling, thermal fractionation, and preferential exclusion of small gas molecules from closed air bubbles. The purpose of this study was to understand these physical processes, which affect the composition of bubbles trapped in ice. By measuring these gas ratios in the ancient air preserved in bubbles trapped in ice, researchers can determine past atmospheric composition and local temperature changes along with the relative timing and magnitude of such events.
The data file is available in Microsoft Excel format. The research paper is available in PDF. Data and the research paper are available via FTP.
Creator(s):
Severinghaus, Jeffrey P.;
Bender, Michael;
Battle, Mark
Date Created:
2006-08-17
Repository:
USAP-DC (current)
- NSIDC (original)
Spatial Extent(s)
West: -148.767, East: -148.767, South: -80.667, North: -80.667
West: 0, East: 0, South: -90, North: -90
Temporal Extent(s)
Start: 1996-12-15 - End: 1996-12-21
Start: 2001-01-21 - End: 2001-01-21
Award(s)
Version:
1
Related Project(s)
References
Keywords
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MD5 Checksum: 9a429907c9942debb721e9da92b2509a File Type: Adobe Portable Document Format (PDF)
MD5 Checksum: b0582552a98f4c8dac18b2879f403a53 File Type: Microsoft Excel
MD5 Checksum: d04391fd14288157bee11c43ee0e9e08 File Type: XML
This dataset has been downloaded 0 times since March 2017 (based on unique date-IP combinations)