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Pakitsoq carbon-14 of methane and supporting gas data
Entry ID: severinghaus_0221470

Abstract: This data set includes carbon-14 measurements on atmospheric methane obtained
from air bubbles in glacial ice at the Pakitsoq outcrop in western Greenland,
during two abrupt increases in methane concentration during the last
deglaciation (14.7 and 11.6 kyr BP). Supporting measurements of oxygen-18 of
O2, nitrogen-15 of N2, methane concentration, and oxygen-18 of ice used to
establish the chronology are also included. The data were collected between
2001 and 2005 in a test of the "clathrate hypothesis", that massive releases of
methane from marine methane hydrates caused the observed abrupt increases in
atmospheric concentration at those two times.
Geographic Coverage
Spatial coordinates   
  N: 86.6   S: 56.78   E: -9.36   W: -75.34

Data Set Citation
Dataset Originator/Creator: Jeff Severinghaus, Vasilii Petrenko, Ed Brook, Niels Reeh, Dave Lowe, Andrew Smith
Dataset Title: Pakitsoq carbon-14 of methane and related gases
Paleo Temporal Coverage
Paleo Start Date: 15400 ybp
Paleo Stop Date: 11200 ybp
Chrono Unit:
Data Center
World Data Center for Paleoclimatology, Boulder Supplemental Info
Data Center URL:
Dataset ID: severinghaus_0221470

Data Center Personnel
Phone: +1 (303) 497-6160
Fax: +1 (303) 497-6513
Email: paleo at
Contact Address:
World Data Center for Paleoclimatology
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80303
Country: USA
Phone: 858-822-2483
Fax: 858-822-3310
Email: jseveringhaus at
Contact Address:
Scripps Institution of Oceanography
9500 Gilman Dr.
City: La Jolla
Province or State: CA
Postal Code: 92093-0244
Country: USA
Petrenko, V.V., Severinghaus, J.P., Brook, E.J., Reeh, N., Schaefer, H., Gas
records from the west Greenland ice margin covering the last glacial
Termination: A horizontal ice core, Quaternary Science Reviews 25, 865-875
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2006-11-22
Last DIF Revision Date: 2017-08-24