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Stable water isotope behavior during the last glacial maximum: A general circulation model analysisGlobal water isotope geochemisty during the last glacial maximum (LGM) is simulated with an 8 deg x 10 deg atmospheric general circulation model (GCM). The simulation results suggest that the spatial delta O-18/temperature relationships observed for the present day and LGM climates are very similar. Furthermore, the temporal delta O-18/temperature relationship is similar to the present-day spatial relationship in regions for which the LGM/present-day temperature change is significant. This helps justify the standard practice of applying the latter to the interpretation of paleodata, despite the possible influence of other factors, such as changes in the evaportive sources of precipitation or in the seasonality of precipitation. The model suggests, for example, that temperature shifts inferred from ice core data may differ from the true shifts by only about 30%.
Document ID
19950053269
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Jouzel, Jean
(Commisariat a l'Energie Atomique Gif-sur-Yvette, France)
Koster, Randal D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Suozzo, Robert J.
(NASA Goddard Institute for Space Studies, New York, NY United States)
Russell, Gary L.
(NASA Goddard Institute for Space Studies, New York, NY United States)
Date Acquired
August 16, 2013
Publication Date
December 20, 1994
Publication Information
Publication: Journal of Geophysical Research
Volume: 99
Issue: D12
ISSN: 0148-0227
Subject Category
Meteorology And Climatology
Accession Number
95A84868
Distribution Limits
Public
Copyright
Other

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