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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Alternative title
Cool tropical temperatures shift the global δ18O-T relationship: An explanation for the ice core δ18O- borehole thermometry conflict?
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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.
Date issued
1997-02Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary SciencesJournal
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
ISSN
0094-8276