Science Source
Isaksen, ISA; Granier, C; Myhre, G; Berntsen, T; Dalsøren, SB; Gauss, M; Klimont, Z; Benestad, R; Bousquet, P; Collins, W; Cox, T; Eyring, V; Fowler, D; Fuzzi, S; Jöckel, P; Laj, P; Lohmann, U; Maione, M; Monks, P; Prevot, ASH; Raes, F et al
Atmospheric Environment
Published date October 1, 2009

Atmospheric composition change: Climate–Chemistry interactions

  • States chemically active climate compounds are either primary compounds like methane (CH4), removed by oxidation in the atmosphere, or secondary compounds like ozone (O3), sulfate and organic aerosols, both formed and removed in the atmosphere
  • States man-induced climate–chemistry interaction is a two-way process: emissions of pollutants change the atmospheric composition contributing to climate change through the aforementioned climate components, and climate change, through changes in temperature, dynamics, the hydrological cycle, atmospheric stability, and biosphere-atmosphere interactions, affects the atmospheric composition and oxidation processes in the troposphere
  • States a key factor is the oxidation potential involving compounds like O3and the hydroxyl radical (OH)
  • Identifies several areas where climate change can affect the tropospheric oxidation process and the chemical composition:
    • enhanced stratospheric–tropospheric exchange of ozone
    • more frequent periods with stable conditions favoring pollution build up over industrial areas
    • enhanced temperature induced biogenic emissions
    • methane releases from permafrost thawing, and
    • enhanced concentration through reduced biospheric uptake
  • States emission scenarios for the coming decades have a large uncertainty range, in particular with respect to regional trends, leading to a significant uncertainty range in estimated regional composition changes and climate impact

Related Content

Science Source
| Atmospheric Chemistry and Physics
US surface ozone trends and extremes from 1980 to 2014: quantifying the roles of rising Asian emissions, domestic controls, wildfires, and climate
Lin, Meiyun, Horowitz et al
Science Source
| JAMA
Ozone and Short-term Mortality in 95 US Urban Communities, 1987-2000
Michelle L. Bell, Aidan McDermott, Scott L. Zeger et al
Science Source
| Journal of Geophysical Research: Atmospheres
Multimodel attribution of the Southern Hemisphere Hadley cell widening: Major role of ozone depletion
Seung‐Ki Min, Seok‐Woo Son
Science Source
| Atmospheric Chemistry and Physics
Evidence for a continuous decline in lower stratospheric ozone offsetting ozone layer recovery
Ball, William T., Alsing et al
Resource Hub