Triple isotope composition of atmospheric O2Entry ID: TRIPLE_ISO_COMP_PALEOATM_02
Abstract: This data set contains results from a study of the triple isotope composition
of atmospheric O2, obtained by analysis of the GISP2 and Siple Dome ice cores.
Results are expressed as D17O, where
D17O = [d17O - 0.521 d18O] x 1000.
The primary application of the data is in reconstructing the past rates of
planetary productivity. In most physical and chemical processes, 17O is
fractionated ... approximately 0.521 times as fast as 18O, and D17O is constant.
However in the stratosphere, there is an isotope exchange reaction between O2
and CO2 in which 17O is fractionated approximately 1.7 times as much as 18O
rather than 0.521 times as much. Consequently, D17O of atmospheric O2 is
different from zero, with seawater (SMOW) as the standard. The magnitude of
the fractionation depends on the relative rates of photochemically-indeuced
stratospheric exchange, and biological productivity. Constraining the former
allows the fertility of the planet to be estimated.
Results are expressed with atmospheric O2 as the standard, rather than SMOW.
Results are expressed in units of per meg, where 1 per meg = 0.001 per mil.
Data Set Citation
Dataset Originator/Creator: Thomas Blunier and Michael Bender
Dataset Title: The triple isotope composition of atmospheric O2
Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2002-057
Dataset Release Date: 2002
Dataset Release Place: Boulder, CO
Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Issue Identification: 2002-057
Other Citation Details: NOAA/NCDC Paleoclimatology ProgramOnline Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gis...
Paleo Temporal Coverage
Quality The average standard error is +/- 10 per meg.
Data Set Progress
Distribution Media: online ftp
Distribution Format: ascii
Phone: +41 31 631 44 71
Fax: +41 31 631 87 42
Email: blunier at climate.unibe.ch
Climate and Environmental Physics Physics Institute, University of Bern Sidlerstrasse 5
Postal Code: CH-3012
Phone: 609 258-2936
Fax: 609 258 0796
Email: bender at princeton.edu
Department of Geosciences Princeton University M48 Guyot Hall
Province or State: NJ
Postal Code: 08544
Blunier, T., B. Barnett, M.L. Bender, and M.B. Hendricks, 2002, Biological
oxygen productivity during the last 60,000 years from triple oxygen isotope measurements, Global Biogeochem. Cycles, 16, 10.1029/2001GB001460.
Meese, D.A., A.J. Gow, P. Grootes, P.A. Mayewski, M. Ram, M. Stuiver, K.C. Taylor, E.D. Waddington, and G.A. Zielinski, 1994, The accumulation record from the GISP2 core as an indicator of climate change throughout the Holocene, Science, 266, 1680-1682, 1994.
Creation and Review Dates
DIF Creation Date: 2004-04-01
Last DIF Revision Date: 2006-05-23