HR: 14:55h
AN: A53F-06    [Abstracts]
TI: Measuring the seasonal cycle of H₂ and its stable isotope HD
AU: * Pieterse, G
EM: G.Pieterse@phys.uu.nl
AF: Institute of Marine and Atmospheric Research Utrecht, Princetonplein 5, Utrecht, 3508 TA, Netherlands
AU: Roeckmann, T
EM: T.Roeckmann@phys.uu.nl
AF: Institute of Marine and Atmospheric Research Utrecht, Princetonplein 5, Utrecht, 3508 TA, Netherlands
AB: The goal of the EUROHYDROS project is to improve our understanding of the atmospheric cycle of H₂ in order to identify and quantify the possible effects of the introduction of a hydrogen economy on global climate. For this reason, the various sources and sinks contributing to the global budget, the seasonal cycles and the inter- hemispheric gradient are studied by performing H₂ and stable isotope measurements at different sites distributed over Europe and the Atlantic meridian. Global models will be employed to assess the global budget and possible climate effects. This work presents the first measurement results and interpretation of the seasonal isotopic variability over the Atlantic meridian and West-to-East European transect. The results were obtained using online Isotope Ratio Mass Spectrometry combined with a novel technique to separate hydrogen from the main constituents of air, recently developed by Rhee et al., 2003.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0322 Constituent sources and sinks
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting