The data are here.
o18/o16 isotopic ratio:
CONTRIBUTORS: Dansgaard, W., Jonhsen, S. J., Clauson, H. B., Dahl-Jensen, D., Gundestrup, N. S., Hammer, C. U., Hvidberg, C. S., Steffensen, J. P., Sveinbjornsdottir, A. E., and J. Jouzel. NAME OF DATA SET: Greenland Ice Core Project Summit Core 18O LAST UPDATE: 12/15/93 (Original receipt by WDC-A Paleo) GEOGRAPHIC REGION: Greenland PERIOD OF RECORD: 0-250,000 yearsBP
Methane (ch4):
CONTRIBUTOR: Jerome Chappellaz CNRS Laboratoire de Glaciologie et Geophysique de l'Environnement 54, rue Moliere Domaine Universitaire BP 96 38402 St Martin d'Heres Cedex FRANCE Tel office: +33 76 82 42 64 Tel std : +33 76 82 42 00 Fax : +33 76 82 42 01 Electronic Mail: jerome@glaciog.grenet.fr [130.190.75.2] NAME OF DATA SET: GRIP Methane Data Set LAST UPDATE: December 13, 1993. GEOGRAPHIC REGION: Greenland PERIOD OF RECORD: 8-40 KyrBP
CONTRIBUTORS: L.Thompson, E. Mosley-Thompson, The Ohio State University NAME OF DATA SET: Quelccaya Ice Core Database LAST UPDATE: 5/92, Period of record extended to 1500 years GEOGRAPHIC REGION: South America PERIOD OF RECORD: 470 A.D.-1984 A.D. LIST OF FILES: Q83SUM.ALL, Q83COR1.ALL, FIELDCON.TAB DESCRIPTION: This data set contains data derived from the Quelccaya Summit Ice Core by Drs. Lonnie Thompson and Ellen Mosley-Thompson of The Ohio State University. The data was updated in May 1992 to extend the data period of record. A printed documentation volume is now available frm NGDC.
CONTRIBUTOR: J. Chapellaz, Laboratoire de Glaciologie et Geophysique de l'Environment. NAME OF DATA SET: Vostok Data Set LAST UPDATE: 12/92 (Original receipt date by WDC-A Paleo) GEOGRAPHIC REGION: Antarctica PERIOD OF RECORD: 0 - 160,000 YBP LIST OF FILES: CH4.DAT, CO2.DAT, DUSTVOL.DAT, TEMP.DAT
ORIGINAL REFERENCES: Jouzel et al, Vostok ice core: A continuous isotope temperature record over the last climatic cycle (160,000 years), Nature,329,6138,403-408 (1987)