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Greenland Ice Core Project (GRIP) Methane Data, NOAA/NCDC, WDC Paleoclimatology

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Abstract: This data set consists of atmospheric methane (CH4) concentrations
from the 3,230 m ice core taken by the Greenland Ice-core Project
(GRIP) covering the period between 40,000 and 8,000 yBP. Methane
concentrations were measured from the air trapped in the ice.

The file contains five columns:

Column 1: True depth (meters below the surface)
Column 2: Mean age of the trapped air (calendar years ... View entire text
Related URL
Description: Greenland Summit Ice Cores CD-ROM
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Geographic Coverage
Spatial coordinates   
  N: 73.0   S: 72.0   E: -37.0   W: -38.0

Data Set Citation
Dataset Originator/Creator: J. Chappellaz
Dataset Title: Atmospheric Methane Concentration - GRIP Icecore
Dataset Series Name: IGBP PAGES/WDC-A Paleoclimatology Data Contribution #93-034
Dataset Release Date: 1993
Dataset Release Place: Boulder, CO
Dataset Publisher: NOAA/NGDC Paleoclimatology Program
Issue Identification: #93-034
Temporal Coverage
Start Date: 1992-05-01
Stop Date: 1993-05-31
Paleo Temporal Coverage
Paleo Start Date: 40,000 ybp
Paleo Stop Date: 8,000 ybp
Chrono Unit:

Paleo Start Date: 40,000 ybp
Paleo Stop Date: 8,000 ybp
Chrono Unit:

Originating Center
Data Center
Climate Data Library, International Research Institute for Climate Prediction, Lamont-Doherty Earth Observatory, Columbia University Supplemental Info
Data Center URL:
Dataset ID: GRIP

Data Center Personnel
Email: help at
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Distribution Media: online ftp
Distribution Size: 5 KB
Distribution Format: ASCII
Fees: None
Phone: +33 76 82 42 64
Fax: +33 76 82 42 01
Email: jerome at
Contact Address:
CNRS Laboratoire de Glaciologie et Geophysique de l'Environnement
54, rue Moliere
Domaine Universitaire BP 96
City: St Martin d'Heres Cedex
Postal Code: 38402
Country: France
Barnola, J.M., Pimienta, P., Raynaud, D. and Korotkevich, Y.S. -
CO2-climate relationship as deduced from the Vostok ice core: a
re-examination based on new measurements and on a re-evaluation of the
air dating - Tellus 43B, 83-90, 1991.
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Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 2019-01-15