HR: 0800h
AN: A31B-0059    [Abstracts]
TI: How Would a Switch to a Future Hydrogen Economy Influence the Atmosphere?
AU: * Warwick, N J
EM: Nicola.Warwick@atm.ch.cam.ac.uk
AF: University of Cambridge, Chemistry Department University of Cambridge Lensfield Road, Cambridge, CB2 1EW United Kingdom
AU: Bekki, S
EM: Slimane.Bekki@aero.jussieu.fr
AF: Service d'Aeronomie du CNRS Institut Pierre-Simon Laplace, Universite Paris VI 4 Place Jussieu, Paris, Cedex 05 France
AU: Nisbet, E G
EM: e.nisbet@gl.rhul.ac.uk
AF: Royal Holloway University of London, Geology Department Royal Holloway, Egham, TW20 OEX United Kingdom
AU: Pyle, J A
EM: John.Pyle@atm.ch.cam.ac.uk
AF: University of Cambridge, Chemistry Department University of Cambridge Lensfield Road, Cambridge, CB2 1EW United Kingdom
AB: Switching from a fossil fuel to a hydrogen-based energy system is likely to cause significant changes in the magnitude and composition of anthropogenic emissions. On the `good' side, the hydrogen economy may achieve reductions in emissions of CO and NOx, improving air quality. On the `minus' side man-made emissions of H$_{2}$ could increase through leaks, influencing the oxidising capacity of the atmosphere and stratospheric ozone. Model simulations using a 2D interactive model of the atmosphere have been performed for a selection of hydrogen economy emission scenarios. Results suggest the impact on stratospheric ozone may not be as large a problem as first thought, but that unwelcome tropospheric effects may be significant. There are strong atmospheric trade-offs between hydrogen and other gases, particularly methane.
DE: 0365 Troposphere--composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting