We present preliminary results from hydrogen isotopic
measurements in atmospheric methane obtained from the NOAA CCGG Cooperative Air
Sampling Network. Recent developments at INSTAAR, University of Colorado
have brought on line the capability to measure hydrogen deuterium ratios in
methane using continuous flow mass spectrometry coupled with an extraction combustion
sample preparation system. Preliminary results show reproducibility of cylinder
air samples to less than ± 2 ‰. Data from several months of samples from six
network sites are presented, including data from: Barrow and Cold Bay, Alaska,
U.S.A; Tutuila American Samoa; Black Sea, Constanta, Romania; Park Falls
Wisconsin, U.S.A.; and Baltic Sea, Poland.
Author: M. Dreier, B.H. Vaughn, J.W.C. White, and K. Mack (Mark dot Dreier at Colorado dot EDU)
Filesize: 10.78 Kb