[Project: Short_Name='PAGES']
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Pakitsoq Greenland Ice Methane Carbon Isotope Data
Entry ID:
NOAA_NCDC_PALEO_2006-083
Summary
Abstract:
We report atmospheric methane carbon isotope ratios (d13CH4) from the Western
Greenland ice margin spanning the Younger Dryas-to-Preboreal (YD-PB) transition. Over the recorded ~800 years, d13CH4 was around -46 per mil; that is, ~1 per mil higher than in the modern atmosphere and ~5.5 per mil higher than would be expected from budgets without 13C-rich anthropogenic emissions. This requires higher natural 13C-rich emissions or stronger sink fractionation than conventionally assumed. Constant d13CH4 during the rise in methane concentration at the YD-PB transition is consistent with additional emissions from tropical wetlands, or aerobic plant CH4 production, or with a multisource scenario. A marine clathrate source is unlikely.
Related URL
Data Set Citation
Dataset Originator/Creator:
Schaefer, H., M.J. Whiticar, E.J. Brook, V.V. Petrenko, D.F. Ferretti, and J.P. Severinghaus
Dataset Title:
Pakitsoq Greenland Ice Methane Carbon Isotope Data
Dataset Series Name:
IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2006-083
Dataset Release Date:
August 2006
Dataset Release Place:
Boulder, CO
Dataset Publisher:
IGBP PAGES/World Data Center for Paleoclimatology
Issue Identification:
2006-083
Other Citation Details:
NOAA/NCDC Paleoclimatology Program
Online Resource:
http://www.ncdc.noaa.gov/paleo/pubs/schaefer2006/schaefer2006.html
Paleo Temporal Coverage
Paleo Start Date:
12.2 ka
Paleo Stop Date: 11.3 ka Chrono Unit: Location Keywords
Science Keywords
ISO Topic Category
Use Constraints
The project was supported by a German Academic Exchange Service (DAAD)
fellowship (H.S.), a Canadian Centre for Climate Modeling and Analysis Environment Canada grant (M.J.W.), a Natural Sciences and Engineering Research Council Discovery Grant (M.J.W.), Canadian Foundation for Climate and Atmospheric Sciences Project Grant GR-417 (M.J.W.), and NSF grants OPP-0221410 (E.J.B.) and OPP-0221470 (J.P.S.). Ancillary Keywords
Data Set Progress
COMPLETE
Originating Center
Data Center
Distribution
Distribution Media:
online ftp
Distribution Format:
text, excel
Fees:
none
Personnel
Role:
INVESTIGATOR
Contact Address:
School of Earth and Ocean Sciences
University of Victoria
Post Office Box 3055
City:
Victoria
Province or State:
British Columbia
Postal Code:
V8W 3P6
Country:
Canada
Creation and Review Dates
DIF Creation Date:
2000-01-18
Last DIF Revision Date:
2005-10-31
Future DIF Review Date:
2002-02-26
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