HR: 1330h
AN: A12A-0064 INVITED     [PDF]
TI: Terrestrial Photochemistry: an aid for planetary evolution and astrobiology
AU: * McConnell, J C
EM: jcmcc@yorku.ca
AF: York University, 4700 Keele Street, Toronto, Ont M3J 1P3 Canada
AB: In the last 20-30 years knowledge of terrestrial photochemistry has improved enormously with advances in measurement technology affecting both laboratory and field measurements. And advances in computer hardware and software have also led to important contributions. Interestingly photochemistry studies have also influenced terrestrial studies in certain chemical families before it became of interest for the Earth. On the Earth interesting photochemistry spans the pressure regime from 1 atmosphere to the exosphere, so somewhat less than on Jupiter and Venus in terms of pressure. Temperature ranges from 100 K to 1500 K, not as cold as tropospheric regions of the outer planets but as warm as Jupiter's exosphere (but much less "warm" than the outer regions of the extra-solar Jupiters where temperatures likely reach 10-20,000K. In this talk I will present a perspective on recent terrestrial photochemical modelling visiting urban air quality and tropospheric ozone, PSC impacts on stratospheric ozone and aerosols and mesospheric chemistry and attempt to relate to planetary evolution and astrobiology.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting