Antarctic stratospheric chemistry of chlorine nitrate, hydrogen chloride, and ice - Release of active chlorine
The reaction rate between atmospheric hydrogen chloride (HCl) and chlorine nitrate (ClONO2) is greatly enhanced in the presence of ice particles; HCl dissolves readily into ice, and the collisional reaction probability for ClONO2 on the surface of ice with HCl in the mole fraction range from about 0...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19880033433 2023-05-15T13:41:01+02:00 Antarctic stratospheric chemistry of chlorine nitrate, hydrogen chloride, and ice - Release of active chlorine Molina, Mario J. Tso, Tai-Ly Molina, Luisa T. Wang, Frank C.-Y. Unclassified, Unlimited, Publicly available Nov 27, 1987 http://ntrs.nasa.gov/search.jsp?R=19880033433 unknown http://ntrs.nasa.gov/search.jsp?R=19880033433 Accession ID: 88A20660 Copyright Other Sources 45 Science; 238; 1253-125 1987 ftnasantrs 2012-02-15T17:31:31Z The reaction rate between atmospheric hydrogen chloride (HCl) and chlorine nitrate (ClONO2) is greatly enhanced in the presence of ice particles; HCl dissolves readily into ice, and the collisional reaction probability for ClONO2 on the surface of ice with HCl in the mole fraction range from about 0.003 to 0.010 is in the range from about 0.05 to 0.1 for temperatures near 200 K. Chlorine is released into the gas phase on a time scale of at most a few milliseconds, whereas nitric acid (HNO3), the other product, remains in the condensed phase. This reaction could play an important role in explaining the observed depletion of ozone over Antarctica; it releases photolytically active chlorine from its most abundant reservoir species, and it promotes the formation of HNO3 and thus removes nitrogen dioxide from the gas phase. Hence it establishes the necessary conditions for the efficient catalytic destruction of ozone by halogenated free radicals. Other/Unknown Material Antarc* Antarctic Antarctica NASA Technical Reports Server (NTRS) Antarctic |
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NASA Technical Reports Server (NTRS) |
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45 |
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45 Molina, Mario J. Tso, Tai-Ly Molina, Luisa T. Wang, Frank C.-Y. Antarctic stratospheric chemistry of chlorine nitrate, hydrogen chloride, and ice - Release of active chlorine |
topic_facet |
45 |
description |
The reaction rate between atmospheric hydrogen chloride (HCl) and chlorine nitrate (ClONO2) is greatly enhanced in the presence of ice particles; HCl dissolves readily into ice, and the collisional reaction probability for ClONO2 on the surface of ice with HCl in the mole fraction range from about 0.003 to 0.010 is in the range from about 0.05 to 0.1 for temperatures near 200 K. Chlorine is released into the gas phase on a time scale of at most a few milliseconds, whereas nitric acid (HNO3), the other product, remains in the condensed phase. This reaction could play an important role in explaining the observed depletion of ozone over Antarctica; it releases photolytically active chlorine from its most abundant reservoir species, and it promotes the formation of HNO3 and thus removes nitrogen dioxide from the gas phase. Hence it establishes the necessary conditions for the efficient catalytic destruction of ozone by halogenated free radicals. |
format |
Other/Unknown Material |
author |
Molina, Mario J. Tso, Tai-Ly Molina, Luisa T. Wang, Frank C.-Y. |
author_facet |
Molina, Mario J. Tso, Tai-Ly Molina, Luisa T. Wang, Frank C.-Y. |
author_sort |
Molina, Mario J. |
title |
Antarctic stratospheric chemistry of chlorine nitrate, hydrogen chloride, and ice - Release of active chlorine |
title_short |
Antarctic stratospheric chemistry of chlorine nitrate, hydrogen chloride, and ice - Release of active chlorine |
title_full |
Antarctic stratospheric chemistry of chlorine nitrate, hydrogen chloride, and ice - Release of active chlorine |
title_fullStr |
Antarctic stratospheric chemistry of chlorine nitrate, hydrogen chloride, and ice - Release of active chlorine |
title_full_unstemmed |
Antarctic stratospheric chemistry of chlorine nitrate, hydrogen chloride, and ice - Release of active chlorine |
title_sort |
antarctic stratospheric chemistry of chlorine nitrate, hydrogen chloride, and ice - release of active chlorine |
publishDate |
1987 |
url |
http://ntrs.nasa.gov/search.jsp?R=19880033433 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19880033433 Accession ID: 88A20660 |
op_rights |
Copyright |
_version_ |
1766144352490356736 |