Cool tropical temperatures shift the global δ[superscript 18]O-T relationship: An explanation for the ice core δ[superscript 18]O- borehole thermometry conflict?
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boyle-1997-cool-tropical-1.pdf
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Author(s)
Boyle, Edward A
Alternative Title
Cool tropical temperatures shift the global δ18O-T relationship: An explanation for the ice core δ18O- borehole thermometry conflict?
Date Issued
February 1997
Journal
Geophysical Research Letters
Publisher
American Geophysical Union (AGU)
Citation
Boyle, Edward A. “Cool Tropical Temperatures Shift the Global δ[superscript 18] O-T Relationship: An Explanation for the Ice Core δ[superscript 18]O - Borehole Thermometry Conflict?” Geophysical Research Letters 24.3 (1997): 273–276.
Version
Final published version
Abstract
The discrepancy between central Greenland borehole temperatures and the isotopic composition of Last Glacial Maximum ice can be explained by a shift in the δ[superscript 18]O-T relationship for the hydrological cycle linked to cooler tropical temperatures. This concept is illustrated using a simple Rayleigh distillation model. An estimate for α=Δδ[superscript 18] O/ΔT (LGM-Holocene) of −0.37 ‰/°C is determined with a simple graphical technique.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1029/97GL00081
