Microphysics and heterogeneous chemistry in aircraft plumes - high sensitivity on local meteorology and atmospheric composition
An aircraft plume model has been developed on the basis of two coupled trajectory box models. Two boxes, one for plume and one for background conditions, are coupled by means of a mixing parameterization based on turbulence theory. The model considers comprehensive gas phase chemistry for the tropop...
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ftdoajarticles:oai:doaj.org/article:abaabdd366b14d9ea980ba0af905ac92 2023-05-15T17:35:02+02:00 Microphysics and heterogeneous chemistry in aircraft plumes - high sensitivity on local meteorology and atmospheric composition S. K. Meilinger B. Kärcher Th. Peter 2005-01-01T00:00:00Z https://doaj.org/article/abaabdd366b14d9ea980ba0af905ac92 EN eng Copernicus Publications http://www.atmos-chem-phys.net/5/533/2005/acp-5-533-2005.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/abaabdd366b14d9ea980ba0af905ac92 Atmospheric Chemistry and Physics, Vol 5, Iss 2, Pp 533-545 (2005) Physics QC1-999 Chemistry QD1-999 article 2005 ftdoajarticles 2022-12-30T21:45:51Z An aircraft plume model has been developed on the basis of two coupled trajectory box models. Two boxes, one for plume and one for background conditions, are coupled by means of a mixing parameterization based on turbulence theory. The model considers comprehensive gas phase chemistry for the tropopause region including acetone, ethane and their oxidation products. Heterogeneous halogen, N 2 O 5 and HO x chemistry on various types of background and aircraft-induced aerosols (liquid and ice) is considered, using state-of-the-art solubility dependent uptake coefficients for liquid phase reactions. The microphysical scheme allows for coagulation, gas-diffusive particle growth and evaporation, so that the particle development from 1s after emission to several days can be simulated. Model results are shown, studying emissions into the upper troposphere as well as into the lowermost stratosphere for contrail and non-contrail conditions. We show the microphysical and chemical evolution of spreading plumes and use the concept of mean plume encounter time, t l , to define effective emission and perturbation indices ( EEI s and EPI s) for the North Atlantic Flight Corridor (NAFC) showing EEI (NO y ) and EPI (O 3 ) for various background conditions, such as relative humidity, local time of emission, and seasonal variations. Our results show a high sensitivity of EEI and EPI s on the exact conditions under which emissions take place. The difference of EEI s with and without considering plume processes indicates that these processes cannot be neglected. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 S. K. Meilinger B. Kärcher Th. Peter Microphysics and heterogeneous chemistry in aircraft plumes - high sensitivity on local meteorology and atmospheric composition |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
An aircraft plume model has been developed on the basis of two coupled trajectory box models. Two boxes, one for plume and one for background conditions, are coupled by means of a mixing parameterization based on turbulence theory. The model considers comprehensive gas phase chemistry for the tropopause region including acetone, ethane and their oxidation products. Heterogeneous halogen, N 2 O 5 and HO x chemistry on various types of background and aircraft-induced aerosols (liquid and ice) is considered, using state-of-the-art solubility dependent uptake coefficients for liquid phase reactions. The microphysical scheme allows for coagulation, gas-diffusive particle growth and evaporation, so that the particle development from 1s after emission to several days can be simulated. Model results are shown, studying emissions into the upper troposphere as well as into the lowermost stratosphere for contrail and non-contrail conditions. We show the microphysical and chemical evolution of spreading plumes and use the concept of mean plume encounter time, t l , to define effective emission and perturbation indices ( EEI s and EPI s) for the North Atlantic Flight Corridor (NAFC) showing EEI (NO y ) and EPI (O 3 ) for various background conditions, such as relative humidity, local time of emission, and seasonal variations. Our results show a high sensitivity of EEI and EPI s on the exact conditions under which emissions take place. The difference of EEI s with and without considering plume processes indicates that these processes cannot be neglected. |
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 |
Microphysics and heterogeneous chemistry in aircraft plumes - high sensitivity on local meteorology and atmospheric composition |
title_short |
Microphysics and heterogeneous chemistry in aircraft plumes - high sensitivity on local meteorology and atmospheric composition |
title_full |
Microphysics and heterogeneous chemistry in aircraft plumes - high sensitivity on local meteorology and atmospheric composition |
title_fullStr |
Microphysics and heterogeneous chemistry in aircraft plumes - high sensitivity on local meteorology and atmospheric composition |
title_full_unstemmed |
Microphysics and heterogeneous chemistry in aircraft plumes - high sensitivity on local meteorology and atmospheric composition |
title_sort |
microphysics and heterogeneous chemistry in aircraft plumes - high sensitivity on local meteorology and atmospheric composition |
publisher |
Copernicus Publications |
publishDate |
2005 |
url |
https://doaj.org/article/abaabdd366b14d9ea980ba0af905ac92 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Atmospheric Chemistry and Physics, Vol 5, Iss 2, Pp 533-545 (2005) |
op_relation |
http://www.atmos-chem-phys.net/5/533/2005/acp-5-533-2005.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/abaabdd366b14d9ea980ba0af905ac92 |
_version_ |
1766134068804583424 |