High Resolution GISP2 and Taylor Dome Methane 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: High Resolution GISP2 and Taylor Dome Methane Data
LAST UPDATE: 6/2000 (Original Receipt by WDC Paleo).
CONTRIBUTOR: Ed Brook, Washington State University.

IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2000-044

SUGGESTED DATA CITATION: Brook, E.J., Harder, S., Severinghaus, J., 
Steig, E.J., and Sucher, C.M., 2000, High Resolution GISP2 and 
Taylor Dome Methane Data, IGBP PAGES/World Data Center for Paleoclimatology 
Data Contribution Series #2000-044.  
NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. 

ORIGINAL REFERENCE: Brook, E.J., Harder, S., Severinghaus, J., 
Steig, E.J., and Sucher, C.M., 2000, On the origin and timing of 
rapid changes in atmospheric methane during the last glacial period,
Global Biogeochemical Cycles, 14(2), 559-572. 

ADDITIONAL REFERENCE:
Brook, E.J., T. Sowers, and J. Orchardo. 1996. Rapid variations in
atmospheric methane concentration during the past 110,000 years. 
Science 273:1087-1091.

GEOGRAPHIC REGION: Global
PERIOD OF RECORD: 0-50 KYrBP

FUNDING SOURCES: National Oceanic and Atmospheric Administration (USA), 
National Science Foundation (USA).

LIST OF FILES: Readme.GISP2.CH4.highres.txt (this file), 
GISP2.CH4.highres.txt (Tab-delimited ASCII format).

DESCRIPTION:
High Resolution Atmospheric Methane Data from GISP2 and Taylor Dome.  
Methane data from Brook et al., Global Biogeochemical Cycles, 14(2), 559-57.
The GISP2 gas age time scale is from Brook et al., Science 273:1087-1091. 
The Taylor Dome gas age time scale was derived by correlating the GISP2 and 
Taylor Dome methane records.  Methane concentrations were determined by GC-FID 
using standards calibrated by NOAA CMDL.  The gas age time scales and 
analytical techniques are described in further detail in the publication.