Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 161, Issue -, Pages 780-785Publisher
ELSEVIER
DOI: 10.1016/S0168-583X(99)00707-7
Keywords
carbon monoxide; C-14; hydroxyl radical; atmospheric chemistry; AMS; global change
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This paper presents a 2-year record (from September 1996 to July 1998) of atmospheric (CO)-C-14 measurements on whole air samples taken at the Mt. Sonnblick observatory (3106 m), a remote high-altitude site in Central Europe. An overall measurement precision of ca. 1/4 molecule (CO)-C-14 per cm(3) air has been achieved. A few events including unexpectedly low CO and (CO)-C-14 values in winter 1996/97 will be discussed in some detail incorporating stable isotope information. Since the amount of (CO)-C-14 data available for the Northern Hemisphere (NW) is rather sparse, this most detailed long-term (CO)-C-14 record for NH temperate latitudes may be a valuable contribution to the assessment of global atmospheric OH concentrations. (C) 2000 Elsevier Science B.V. All rights reserved.
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