'Natural emissions' diaporamas de présentation

Modelling global Tropospheric Ozone: Implications for Future Air Quality and Climate

Modelling global Tropospheric Ozone: Implications for Future Air Quality and Climate. David Stevenson Institute for Meteorology University of Edinburgh Thanks to: Colin Johnson, Dick Derwent, Bill Collins (Met. Office). Talk Structure. Some background about tropospheric ozone

688 views • 46 slides

Mercury - overview of global emissions, transport and effects

Mercury - overview of global emissions, transport and effects. John Munthe IVL Swedish Environmental Research Institute. Presentation topics. Introduction Emissions Main transport pathways - modelling Contribution of global cycling on deposition in Europe and the USA Monitoring The Arctic

494 views • 37 slides

Atmospheric chemistry

Atmospheric chemistry. Day 2 Stratospheric chemistry. O 2 ? O( 3 P) + O( 3 P) Threshold ? = 242 nm O 2 ? O( 3 P) + O( 1 D) Threshold ? = 176 nm. UV absorption spectrum of O 3 at 298 K . Hartley bands. Small but significant absorption out to 350 nm (Huggins bands).

572 views • 35 slides

Large Contribution of Natural Aerosols to Uncertainty in Indirect Forcing

Large Contribution of Natural Aerosols to Uncertainty in Indirect Forcing. K.S Carslaw , L. A. Lee, C. L. Reddington , K. J. Pringle, A. Rap, P. M. Forster, G.W. Mann, D. V. Spracklen , M. T. Woodhouse, L. A. Regayre and J. R. Pierce Presented by Samantha Tabor March 31 st , 2014. Outline.

380 views • 27 slides

Global methane budget : The 2006-2012 period

192 views • 19 slides

Since pre-industrial times OH changed by :

Since pre-industrial times OH changed by :. +7 % [Berntsen et al.. JGR, 1997; Martinerie et al., JGR,1995]. - 9 % [Wang and Jacob, JGR, 1998]. -15 % [Lelieveld and Dentener, 2000]. Van Aardenne et al. (GBC, 2001). Since pre-industrial times OH changed by :.

259 views • 16 slides

Stephen Mueller & Jonathan Mallard Tennessee Valley Authority

Stephen Mueller & Jonathan Mallard Tennessee Valley Authority. Modeling Natural Fine Particle Concentrations Using the CMAQ Model with Added Treatments of Reduced Sulfur Compounds. Identify natural emissions not routinely considered by US regulatory modeling.

237 views • 14 slides

Mercury Quicksilver

Mercury Quicksilver. Parsons M.B. & Percival, J.B. (2005): Mercury Sources measurements cycles and effects MAC Short Course 34 Halifax. Chemical and physical properties of mercury. Historical Uses. Since 4000 BCE Cinnabar used for the preservation of human bones including Egyptians

639 views • 13 slides

Plenary discussion on modelling

Plenary discussion on modelling. Sep-Nov 2007: Simulation and analysis for year 2004. Suggested emissions : Anthropogenic CO, NOx, NMVOCs, N 2 O from IIASA Anthropogenic CH 4 from Philippe Bousquet Natural CH 4 from Philippe Bousquet Biomass burning CH 4 from Philippe Bousquet

242 views • 10 slides

Anthropogenic emissions

153 views • 3 slides