IEDA
Dataset Information
Allan Hills CMC3 ice core d18Oatm, d15N, dO2/N2, dAr/N2, d40/36Ar, d40/38Ar 2021 & 2022
Data DOI:
https://doi.org/10.15784/601620
Cite as
Severinghaus, J. P. (2022) "Allan Hills CMC3 ice core d18Oatm, d15N, dO2/N2, dAr/N2, d40/36Ar, d40/38Ar 2021 & 2022" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601620.
Abstract
These data cover the penultimate glacial period (MIS 6) and parts of MIS5, in Allan Hills ice. The d18Oatm data are useful for dating the core, and the 15N is useful for inferring firn thickness. Importantly, the data have only been corrected for gas loss using published methods (i.e. Baggenstos et al. 2017), but not for recently recognized (and unpublished) effects of declining contemporary atmospheric O2/N2 due to fossil fuel burning. These changes unfortunately affect the La Jolla Air standard gas O2/N2 ratio that is used in our lab to make the measurements. Users of this data are encouraged to contact Jeff Severinghaus for help in making these novel corrections to the standard gas.
Date Created:
2022-11-22
Repository:
USAP-DC (current)
Spatial Extent(s)
West: 159.3562, East: 159.3562, South: -76.73243, North: -76.73243
Award(s)
Version:
1
Supplemental Docs
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README_601620.txt
Data Files
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2.6 MB
Allan Hills 2021 CMC3 18Oatm.xls

MD5 Checksum: 0614e5292cde5f50bc71157816b2a1d1 File Type: Microsoft Excel

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4.5 MB
Allan_Hills_2022_CMC3_18Oatm.xls

MD5 Checksum: ba5515dd0e43fb15862dba0d5c775622 File Type: Microsoft Excel

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