IEDA
Dataset Information
Law Dome DE08-OH firn air 15N, O2/N2, Ar/N2, 18O of O2
Data DOI:
https://doi.org/10.15784/601598
Cite as
Severinghaus, J. P. (2022) "Law Dome DE08-OH firn air 15N, O2/N2, Ar/N2, 18O of O2" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601598.
AMD - DIF Record(s)
Abstract
This data set comprises measurements of noble and inert gases in the firn at the DE08-OH site sampled in 2018-2019 near the summit of Law Dome, Antarctica. The data show the expected gravitational enrichment of heavy isotopes with depth, somewhat attenuated by the high accumulation rate and a near-surface well-mixed zone (convective zone), and the "lock-in" horizon at 68 m depth. As seen at many other sites, the heavy isotope of oxygen 18O is depleted progressively with depth within the lock-in zone due to faster gas permeation of 16O16O relative to 18O16O from compressed air bubbles.
Date Created:
2022-08-16
Repository:
USAP-DC (current)
Temporal Extent(s)
Start: 2018-12-01 - End: 2019-01-30
Award(s)
Version:
1
References
  1. Battle, M. O., J. P. Severinghaus, E. D. Sofen, D. Plotkin, A. J. Orsi, M. Aydin, S. A. Montzka, T. Sowers, and P. P. Tans (2011). Controls on the movement and composition of firn air at the West Antarctic Ice Sheet Divide. Atmos. Chem. Phys. 11, 11007-11021. (doi:10.5194/acp-11-11007-2011)
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README_601598.txt
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LawDome_DE08-OH_firn_air_2019.xlsx

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