Controlling factors on a paleo-lake oxygen isotope record (Yammoûneh, Lebanon) since the Last Glacial Maximum

2010 ◽  
Vol 29 (7-8) ◽  
pp. 865-886 ◽  
Author(s):  
Anne-Lise Develle ◽  
Julien Herreros ◽  
Laurence Vidal ◽  
Alexandre Sursock ◽  
Françoise Gasse
Keyword(s):  
Oxygen Isotope ◽  
Last Glacial Maximum ◽  
Controlling Factors ◽  
Glacial Maximum ◽  
Last Glacial ◽  
Oxygen Isotope Record ◽  
Isotope Record ◽  
The Last Glacial Maximum ◽  
The Last Glacial

scholarly journals Global Speleothem Oxygen Isotope Measurements Since the Last Glacial Maximum

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
A. M. Shah ◽  
C. Morrill ◽  
E. P. Gille ◽  
W. S. Gross ◽  
D. M. Anderson ◽  
...  
Keyword(s):  
Oxygen Isotope ◽  
Last Glacial Maximum ◽  
Large Scale ◽  
Asian Summer Monsoon ◽  
Glacial Maximum ◽  
Last Glacial ◽  
Hydrologic Variability ◽  
The World ◽  
The Last Glacial Maximum ◽  
The Last Glacial

This synthesis of thirty-six sites (sixty cores with over 27 000 measurements) located around the world facilitates scientific research on the climate of the last 21 000 years ago obtained from oxygen isotope ( or delta-O-18) measurements. Oxygen isotopes in speleothem calcite record the influence of ambient temperature and the isotopic composition of the source water, the latter providing evidence of hydrologic variability and change. Compared to paleoclimate proxies from sedimentary archives, the age uncertainty is unusually small, around +/−100 years for the last 21 000-year interval. Using data contributed to the World Data Center (WDC) for Paleoclimatology, we have created consistently formatted data files for individual sites as well as composite dataset of annual to millennial resolution. These individual files also contain the chronology information about the sites. The data are useful in understanding hydrologic variability at local and regional scales, such as the Asian summer monsoon and the Intertropical Convergence Zone (as discussed in the underlying source publications), and should also be useful in understanding large-scale aspects of hydrologic change since the Last Glacial Maximum (LGM).

Causes of model–data discrepancies in European climate during oxygen isotope stage 3 with insights from the last glacial maximum

2003 ◽  
Vol 59 (1) ◽  
pp. 108-113 ◽  
Author(s):  
David Pollard ◽  
Eric J. Barron
Keyword(s):  
Oxygen Isotope ◽  
Last Glacial Maximum ◽  
Climate Modeling ◽  
Ice Sheet ◽  
Glacial Maximum ◽  
European Continent ◽  
Oxygen Isotope Stage ◽  
Last Glacial ◽  
The Last Glacial Maximum ◽  
The Last Glacial

AbstractOxygen isotope stage 3 (OIS 3), encompassing the long middle section of the last glacial interval, has been the focus of an intensive high-resolution climate modeling effort for Europe. These model simulations produce substantially colder climates than modern simulations; however, the temperatures appear warmer than many proxy indicators suggest. In order to evaluate the importance of the model boundary conditions, comparable simulations are completed for the last glacial maximum (LGM). The LGM simulation produces a much colder European continent than OIS 3, despite similarities in the specification of sea-surface temperatures (SSTs). Ice-sheet dimension is evidently a key factor in explaining the difference in European climates over the past 40,000 yr. However, underestimates in specified OIS 3 ice sheets cannot be invoked to explain the discrepancies, since data strongly indicate small ice-sheet extents at that time; this leaves errors in specified OIS 3 SSTs as the most likely cause.

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