Laboratory studies of sticking coefficients and heterogeneous reactions important in the stratosphere
The discovery of ozone depletion during spring in the Antarctic stratosphere has received wide spread attention. Both meteorological and chemical mechanisms have been used in attempts to explain this observation. The chemical theory focused on the chlorofluoromethanes released into the atmosphere. H...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19890005168 2023-05-15T13:35:11+02:00 Laboratory studies of sticking coefficients and heterogeneous reactions important in the stratosphere Leu, Ming-Taun Unclassified, Unlimited, Publicly available May 1, 1988 application/pdf http://hdl.handle.net/2060/19890005168 unknown Document ID: 19890005168 Accession ID: 89N14539 http://hdl.handle.net/2060/19890005168 No Copyright CASI ENVIRONMENT POLLUTION NASA, Goddard Space Flight Center, Polar Ozone Workshop. Abstracts; p 102-103 1988 ftnasantrs 2015-03-15T05:59:55Z The discovery of ozone depletion during spring in the Antarctic stratosphere has received wide spread attention. Both meteorological and chemical mechanisms have been used in attempts to explain this observation. The chemical theory focused on the chlorofluoromethanes released into the atmosphere. However, gas-phase, homogeneous reactions alone in the model can not adequately explain such a depletion. Heterogeneous reactions on ice surfaces could be important in the Antarctic stratosphere. These reactions are thought to convert ClONO2 and N2O5 into HNO3 in the solid phase while Cl2, HOCl, and ClNO2 are released into the stratosphere as gas-phase products. The photolysis of Cl2, HOCl, and ClNO2, then produces active chlorine which subsequently removes ozone through several catalytic cycles, including the Cl2O2 mechanism. The polar stratospheric clouds are thought to consist of mixtures of water ice, nitric acid, and sulfuric acid. Condensation of HCl onto the PSC's could provide active surfaces for heterogeneous reactions. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic The Antarctic |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
ENVIRONMENT POLLUTION |
spellingShingle |
ENVIRONMENT POLLUTION Leu, Ming-Taun Laboratory studies of sticking coefficients and heterogeneous reactions important in the stratosphere |
topic_facet |
ENVIRONMENT POLLUTION |
description |
The discovery of ozone depletion during spring in the Antarctic stratosphere has received wide spread attention. Both meteorological and chemical mechanisms have been used in attempts to explain this observation. The chemical theory focused on the chlorofluoromethanes released into the atmosphere. However, gas-phase, homogeneous reactions alone in the model can not adequately explain such a depletion. Heterogeneous reactions on ice surfaces could be important in the Antarctic stratosphere. These reactions are thought to convert ClONO2 and N2O5 into HNO3 in the solid phase while Cl2, HOCl, and ClNO2 are released into the stratosphere as gas-phase products. The photolysis of Cl2, HOCl, and ClNO2, then produces active chlorine which subsequently removes ozone through several catalytic cycles, including the Cl2O2 mechanism. The polar stratospheric clouds are thought to consist of mixtures of water ice, nitric acid, and sulfuric acid. Condensation of HCl onto the PSC's could provide active surfaces for heterogeneous reactions. |
format |
Other/Unknown Material |
author |
Leu, Ming-Taun |
author_facet |
Leu, Ming-Taun |
author_sort |
Leu, Ming-Taun |
title |
Laboratory studies of sticking coefficients and heterogeneous reactions important in the stratosphere |
title_short |
Laboratory studies of sticking coefficients and heterogeneous reactions important in the stratosphere |
title_full |
Laboratory studies of sticking coefficients and heterogeneous reactions important in the stratosphere |
title_fullStr |
Laboratory studies of sticking coefficients and heterogeneous reactions important in the stratosphere |
title_full_unstemmed |
Laboratory studies of sticking coefficients and heterogeneous reactions important in the stratosphere |
title_sort |
laboratory studies of sticking coefficients and heterogeneous reactions important in the stratosphere |
publishDate |
1988 |
url |
http://hdl.handle.net/2060/19890005168 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
CASI |
op_relation |
Document ID: 19890005168 Accession ID: 89N14539 http://hdl.handle.net/2060/19890005168 |
op_rights |
No Copyright |
_version_ |
1766062024166473728 |