Table of Contents
Dataset Papers in Geosciences
Volume 2013, Article ID 548048, 9 pages
http://dx.doi.org/10.7167/2013/548048
Dataset Paper

Global Speleothem Oxygen Isotope Measurements Since the Last Glacial Maximum

1Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO 80309-0216, USA
2NOAA Paleoclimatology Program, National Climatic Data Center, National Oceanic and Atmospheric Administration, 325 Broadway, Code E/CC23, Boulder, CO 80305-3328, USA

Received 25 July 2012; Accepted 19 September 2012

Academic Editors: Q. Cao, A. Foerster, P. Keckhut, J. L. Prado, B. Wuennemann, and D.-P. Yan

Copyright © 2013 A. M. Shah et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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).