Phase transformations in sulfuric acid aerosols: Implications for stratospheric ozone depletion
Abstract. Activation reactions of benign chlorine species (HC1, C1ONO2) on aerosols in the winter polar stratosphere s t the stage for the spring-time catalytic destruction f ozone leading to the Antarctic ozone hole. Field observations have demonstratecl theexistence of both solid and liquid partic...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.490.3547 2023-05-15T13:45:37+02:00 Phase transformations in sulfuric acid aerosols: Implications for stratospheric ozone depletion Dan G. Imre Jun Xu Anthony C. Tridico The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.3547 http://www.ecd.bnl.gov/pubs/BNL62996R.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.3547 http://www.ecd.bnl.gov/pubs/BNL62996R.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.ecd.bnl.gov/pubs/BNL62996R.pdf text ftciteseerx 2016-01-08T08:28:36Z Abstract. Activation reactions of benign chlorine species (HC1, C1ONO2) on aerosols in the winter polar stratosphere s t the stage for the spring-time catalytic destruction f ozone leading to the Antarctic ozone hole. Field observations have demonstratecl theexistence of both solid and liquid particles consisting ofH2SO 4, HNO 3, and H20. The exact fi'eezing conditions and final composition of the solid aerosols remain the subject of investigations. We present laboratory observations of isolated individual sulfiaric acid/water particles under stratospheric temperatures and water vapor pressures. Our experiments demonstrate hat this binary system would not fi'eeze unless temperatures were below the water-ice frost point. Upon fi'eezing, we observe H2SO4.SH20, not the generally invoked H2SO4.4H20. We suggest that the water-rich octahydrate phase is likely to be one of the high relative humidity forms which is efficient in chlorine activation. Text Antarc* Antarctic Unknown Antarctic The Antarctic |
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ftciteseerx |
language |
English |
description |
Abstract. Activation reactions of benign chlorine species (HC1, C1ONO2) on aerosols in the winter polar stratosphere s t the stage for the spring-time catalytic destruction f ozone leading to the Antarctic ozone hole. Field observations have demonstratecl theexistence of both solid and liquid particles consisting ofH2SO 4, HNO 3, and H20. The exact fi'eezing conditions and final composition of the solid aerosols remain the subject of investigations. We present laboratory observations of isolated individual sulfiaric acid/water particles under stratospheric temperatures and water vapor pressures. Our experiments demonstrate hat this binary system would not fi'eeze unless temperatures were below the water-ice frost point. Upon fi'eezing, we observe H2SO4.SH20, not the generally invoked H2SO4.4H20. We suggest that the water-rich octahydrate phase is likely to be one of the high relative humidity forms which is efficient in chlorine activation. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Dan G. Imre Jun Xu Anthony C. Tridico |
spellingShingle |
Dan G. Imre Jun Xu Anthony C. Tridico Phase transformations in sulfuric acid aerosols: Implications for stratospheric ozone depletion |
author_facet |
Dan G. Imre Jun Xu Anthony C. Tridico |
author_sort |
Dan G. Imre |
title |
Phase transformations in sulfuric acid aerosols: Implications for stratospheric ozone depletion |
title_short |
Phase transformations in sulfuric acid aerosols: Implications for stratospheric ozone depletion |
title_full |
Phase transformations in sulfuric acid aerosols: Implications for stratospheric ozone depletion |
title_fullStr |
Phase transformations in sulfuric acid aerosols: Implications for stratospheric ozone depletion |
title_full_unstemmed |
Phase transformations in sulfuric acid aerosols: Implications for stratospheric ozone depletion |
title_sort |
phase transformations in sulfuric acid aerosols: implications for stratospheric ozone depletion |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.3547 http://www.ecd.bnl.gov/pubs/BNL62996R.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
http://www.ecd.bnl.gov/pubs/BNL62996R.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.3547 http://www.ecd.bnl.gov/pubs/BNL62996R.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766228626472173568 |