Atmospheric concentrations of CH4 were extracted from the 2,184-m ice core from
Byrd Station (Antarctica) for the period 550 - 51,100 BP in 1967-68 by
the U.S. Cold regions Research and Engineering ...
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