Dome C Last Glacial Termination Atmospheric CO2 Data: Readme file
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              World Data Center for Paleoclimatology, Boulder
                                and 
                   NOAA Paleoclimatology Program
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NOTE: PLEASE CITE ORIGINAL REFERENCE WHEN USING THIS DATA!!!!!

NAME OF DATA SET: Dome C Last Glacial Termination Atmospheric CO2 Data 
LAST UPDATE: 1/2001 (Original receipt by WDC Paleo)

CONTRIBUTORS: Eric Monnin, Andreas Indermühle, André Dällenbach, 
Jacqueline Flückiger, Bernhard Stauffer, and Thomas F. Stocker, 
Climate and Environmental Physics, Physics Institute, University of Bern, 
and Dominique Raynaud and Jean-Marc Barnola, 
CNRS Laboratoire de Glaciologie et de Géophysique de l'Environnement.

IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2001-004

SUGGESTED DATA CITATION: Monnin, E., et al., 2001, 
Dome C Last Glacial Termination Atmospheric CO2 Data, 
IGBP PAGES/World Data Center A for Paleoclimatology 
Data Contribution Series #2001-004. 
NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. 

ORIGINAL REFERENCE:  E. Monnin, A. Indermühle, A. Dällenbach, 
J. Flückiger, B. Stauffer, T. F. Stocker, D. Raynaud, and J.-M. Barnola, 2001,
Atmospheric CO2 concentrations over the last glacial termination, 
Science 291, 112-114, 2001.

ADDITIONAL REFERENCE for DATING:
J. Schwander, J. Jouzel, C. U. Hammer, J.-R. Petit, R. Udisti, E. Wolff, 2001,
A tentative chronology for the EPICA Dome Concordia ice core, 
Geophysical Research Letters, Submitted.


GEOGRAPHIC REGION: Antarctica

PERIOD OF RECORD: Last Glacial Termination, ~21-9 KYrBP.

LIST OF FILES: Readme_Monnin2001.txt (this file),
DomeC_CO2.txt, DomeC_CH4.txt (Tab-delimited ASCII text). 


DESCRIPTION:
Dome C Last Glacial Termination Atmospheric CO2 Data

A record of atmospheric CO2 concentration during the transition 
from the Last Glacial Maximum to the Holocene, obtained from the 
Dome Concordia (Antarctica) ice core, reveals that an increase of 
76 parts per million by volume (ppmv) occurred over a period of 
6 thousand years in four clearly distinguishable intervals. 
The close correlation between CO2 concentration and Antarctic temperature 
indicates that the Southern Ocean played an important role in causing the 
CO2 increase. However, the similarity of changes in CO2 concentration and 
variations of atmospheric methane concentration suggests that processes 
in the tropics and in the northern hemisphere, where the main sources for 
methane are located, also had significant effects on atmospheric CO2 
concentrations.


BP is before 1950	
Sigma mean is one sigma of the mean value 
(of 6 neighboring samples)