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Global speleothem oxygen isotope measurements since the Last Glacial Maximum


Villars cave, France Global speleothem oxygen isotope measurements since the Last Glacial Maximum

A. Shah, C. Morrill, E.P. Gille, W.S. Gross, D.M. Anderson, B.A. Bauer, R. Buckner and M. Hartman


NOAA National Climatic Data Center Paleoclimatology Branch, 325 Broadway, Code E/CC23, Boulder, CO 80305-3328, U.S.A.
DESCRIPTION:
Oxygen isotope measurements from cave deposits provide some of the highest-resolution and best-dated information about past fluctuations in temperature and precipitation. Over the past decade, a relatively dense network of sites has been measured spanning the time period from the Last Glacial Maximum to present. These sites yield data that address key scientific questions surrounding climate sensitivity to greenhouse gas concentrations, non-linear responses and thresholds in the climate system, and the skill of state-of-the-art climate models in reproducing states different from the present one. This compilation of speleothem oxygen isotope records includes quality-controlled values from sixty cores spanning part or all of the last deglaciation and Holocene, provided on a common age scale (calendar years before present, where present = 1950 A.D.) and with common measurement units (per mil PDB). The main data file is in comma-separated values format and first gives metadata information for each of the sixty cores (i.e., site name, core name, latitude, longitude, principal investigator, journal citation). Also provided in these metadata are the FTP locations (URLs) for machine-readable text files for each core, which give more complete information about site-specific metadata, dating methods and all raw data. Below the core metadata, data for all sixty cores are presented in three columns. The first column is a Core Index, which identifies the core according to the metadata table; the second column is age in calendar years BP; and the third column is d18O of calcium carbonate in per mil PDB. Missing values are identified by "NaN".
For more information, please see the
Global speleothem oxygen isotope measurements since the Last Glacial Maximum Page

Download Data from the WDC Paleo archive:
Global speleothem oxygen isotope data folder

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http://www.ncdc.noaa.gov/paleo/pubs/syntrace/syntrace-speleothem.html
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Last Updated Friday, 30-Dec-2011 07:51:02 EST by paleo@noaa.gov
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