Special Issue "Climate-Chemistry Interactions"
A special issue of Atmosphere (ISSN 2073-4433).
Deadline for manuscript submissions: closed (31 March 2015)
Prof. Dr Ivar S. A. Isaksen
Department of Geosciences, University of Oslo, Oslo, Norway
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Interests: Atmospheric chemistry and climate-chemistry interactions, with emphasis on processes describing changes in chemical active greenhouse gases (ozone, methane, CFCs, HCFCs) and secondary particles (sulfate, nitrate organics) and of importance for ozone depletion and atmospheric oxidation and regional air pollution.
Climate–chemistry interaction is currently, and will in the future, be affected by pollutant emissions from different sources. There will also be interaction with emissions from natural sources. Key compounds affecting climate–chemistry interactions are emissions of NOx, CO, VOCs, sulfur dioxide, methane and isoprene. Furthermore, secondary compounds formed and broken down in the atmosphere, such as ozone (O3), the hydroksyl radical (OH), the hydrogen peroksy radical (HO2), hydrogen peroxygen (H2O2), sulfate and organic aerosols, play a role for the oxidation of gases. Oxidation of halogens will affect chemical processes in the stratosphere. Increased NOx emission will have enhanced impact on climate through direct O3 impact. Increased methane emissions will increase the direct climate impact. However, OH is reduced when methane increases, giving less climate impact. The impact of sulfate emissions will lead to cooling of the atmosphere. The impact of CO2, due to methane oxidation with increasing emissions, will give enhanced climate impact. The impact of emission of gases affecting climate will be highly different depending on sources. For instance, the emission of gases from aircraft, ship and land based transport sectors have differing impacts on climate–chemistry interations. Keypoints in studies of future climate–chemistry interactions are the development in gaseous emissions from different natural and anthropogenic sources, and the increases and reductions in climate impact from the different climate gases.
Prof. Dr. Ivar S. A. Isaksen
Manuscript Submission Information
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