Atmospheric Chemistry and Physics Suppression of chlorine activation on aviation-produced
Abstract. We examine the effect of nanometer-sized aircraft-induced aqueous sulfuric acid (H2SO4/H2O) particles on atmospheric ozone as a function of temperature. Our calculations are based on a previously derived parameterization for the regional-scale perturbations of the sulfate surface area dens...
Main Authors: | , , , |
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Other Authors: | |
Format: | Text |
Language: | English |
Published: |
2002
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Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.404.8285 http://hal.archives-ouvertes.fr/docs/00/29/52/08/PDF/acp-2-307-2002.pdf |
Summary: | Abstract. We examine the effect of nanometer-sized aircraft-induced aqueous sulfuric acid (H2SO4/H2O) particles on atmospheric ozone as a function of temperature. Our calculations are based on a previously derived parameterization for the regional-scale perturbations of the sulfate surface area density due to air traffic in the North Atlantic Flight Corridor (NAFC) and a chemical box model. We confirm large scale model results that at temperatures T> 210 K additional ozone loss – mainly caused by hydrolysis of BrONO2 and N2O5 – scales in proportion with the aviation-produced increase of the background aerosol surface area. However, at lower temperatures (< 210 K) we isolate two effects which efficiently reduce the aircraft-induced perturbation: (1) background particles growth due to H2O and HNO3 uptake enhance scavenging losses of aviation-produced liquid particles |
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