Suppression of chlorine activation on aviation-produced volatile particles
We examine the effect of nanometer-sized aircraft-induced aqueous sulfuric acid (H 2 SO 4 /H 2 O) 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...
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ftdoajarticles:oai:doaj.org/article:629a8e5196924224aa1e3eca15608f8b 2023-05-15T17:35:38+02:00 Suppression of chlorine activation on aviation-produced volatile particles S. K. Meilinger B. Kärcher Th. Peter 2002-01-01T00:00:00Z https://doaj.org/article/629a8e5196924224aa1e3eca15608f8b EN eng Copernicus Publications http://www.atmos-chem-phys.net/2/307/2002/acp-2-307-2002.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/629a8e5196924224aa1e3eca15608f8b Atmospheric Chemistry and Physics, Vol 2, Iss 4, Pp 307-312 (2002) Physics QC1-999 Chemistry QD1-999 article 2002 ftdoajarticles 2022-12-31T11:17:00Z We examine the effect of nanometer-sized aircraft-induced aqueous sulfuric acid (H 2 SO 4 /H 2 O) 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 BrONO 2 and N 2 O 5 -- 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 H 2 O and HNO 3 uptake enhance scavenging losses of aviation-produced liquid particles and (2) the Kelvin effect efficiently limits chlorine activation on the small aircraft-induced droplets by reducing the solubility of chemically reacting species. These two effects lead to a substantial reduction of heterogeneous chemistry on aircraft-induced volatile aerosols under cold conditions. In contrast we find contrail ice particles to be potentially important for heterogeneous chlorine activation and reductions in ozone levels. These features have not been taken into consideration in previous global studies of the atmospheric impact of aviation. Therefore, to parameterize them in global chemistry and transport models, we propose the following parameterisation: scale the hydrolysis reactions by the aircraft-induced surface area increase, and neglect heterogeneous chlorine reactions on liquid plume particles but not on ice contrails and aircraft induced ice clouds. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 S. K. Meilinger B. Kärcher Th. Peter Suppression of chlorine activation on aviation-produced volatile particles |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
We examine the effect of nanometer-sized aircraft-induced aqueous sulfuric acid (H 2 SO 4 /H 2 O) 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 BrONO 2 and N 2 O 5 -- 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 H 2 O and HNO 3 uptake enhance scavenging losses of aviation-produced liquid particles and (2) the Kelvin effect efficiently limits chlorine activation on the small aircraft-induced droplets by reducing the solubility of chemically reacting species. These two effects lead to a substantial reduction of heterogeneous chemistry on aircraft-induced volatile aerosols under cold conditions. In contrast we find contrail ice particles to be potentially important for heterogeneous chlorine activation and reductions in ozone levels. These features have not been taken into consideration in previous global studies of the atmospheric impact of aviation. Therefore, to parameterize them in global chemistry and transport models, we propose the following parameterisation: scale the hydrolysis reactions by the aircraft-induced surface area increase, and neglect heterogeneous chlorine reactions on liquid plume particles but not on ice contrails and aircraft induced ice clouds. |
format |
Article in Journal/Newspaper |
author |
S. K. Meilinger B. Kärcher Th. Peter |
author_facet |
S. K. Meilinger B. Kärcher Th. Peter |
author_sort |
S. K. Meilinger |
title |
Suppression of chlorine activation on aviation-produced volatile particles |
title_short |
Suppression of chlorine activation on aviation-produced volatile particles |
title_full |
Suppression of chlorine activation on aviation-produced volatile particles |
title_fullStr |
Suppression of chlorine activation on aviation-produced volatile particles |
title_full_unstemmed |
Suppression of chlorine activation on aviation-produced volatile particles |
title_sort |
suppression of chlorine activation on aviation-produced volatile particles |
publisher |
Copernicus Publications |
publishDate |
2002 |
url |
https://doaj.org/article/629a8e5196924224aa1e3eca15608f8b |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Atmospheric Chemistry and Physics, Vol 2, Iss 4, Pp 307-312 (2002) |
op_relation |
http://www.atmos-chem-phys.net/2/307/2002/acp-2-307-2002.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/629a8e5196924224aa1e3eca15608f8b |
_version_ |
1766134848657817600 |