HR: 11:30h
AN: A52B-05    [Abstracts]
TI: Tropospheric ozone and aerosols in climate agreements: scientific and political challenges
AU: * Fuglestvedt, J
EM: j.s.fuglestvedt@cicero.uio.no
AF: CICERO, P.B. 1129 Blindern, Oslo, 0318 Norway
AU: Rypdal, K
EM: kristin.rypdal@cicero.uio.no
AF: CICERO, P.B. 1129 Blindern, Oslo, 0318 Norway
AU: Berntsen, T
EM: t.k.berntsen@cicero.uio.no
AF: CICERO, P.B. 1129 Blindern, Oslo, 0318 Norway
AU: Aunan, K
EM: kristin.aunan@cicero.uio.no
AF: CICERO, P.B. 1129 Blindern, Oslo, 0318 Norway
AU: Torvanger, A
EM: asbjorn.torvanger@cicero.uio.no
AF: CICERO, P.B. 1129 Blindern, Oslo, 0318 Norway
AU: Stordal, F
EM: frode.stordal@geo.uio.no
AF: DEpartment of Geosciences, University of Oslo, P.B. 1022 Blindern,, Oslo, 0315 Norway
AU: Pacyna, J
EM: j.p@nilu.no
AF: NILU, P.B. 100, Kjeller, 2027 Norway
AU: Nygaard, L
EM: l.a.p.nygaard@cicero.uio.no
AF: CICERO, P.B. 1129 Blindern, Oslo, 0318 Norway
AB: In addition to the six greenhouse gases included in the Kyoto Protocol, the tropospheric ozone precursors CO, NMVOC and NOx and the aerosols/aerosol precursors black carbon, organic carbon and SO2 also play significant roles in climate change. We review some of the main scientific and political challenges associated with incorporating tropospheric ozone and aerosol precursors into climate agreements and discuss how these challenges have a bearing on the design of future climate agreements. We argue that the optimal policy design for a particular substance depends on a combination of scientific and political concerns. We look particularly at the importance of location of emissions, negative forcing, metrics (measuring climate effects against other gases on a common scale; e.g. GWP), political attractiveness, and verification and compliance. We review the existing knowledge on these issues, explore their impact on policy design, and conclude that, with current scientific knowledge, CO and NMVOC could conceivably be included in a global climate agreement, either in a basket with the long-lived greenhouse gases or in a separate basket. However, the complexity and fairness implications of including tropospheric ozone precursors and aerosols might negatively affect the political feasibility of a future agreement.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0368 Troposphere--constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2005 Joint Assembly