Polar stratospheric clouds satellite observations, processes, and role in ozone depletion
Polar stratospheric clouds (PSCs) play important roles in stratospheric ozone depletion during winter and spring at high latitudes (e.g., the Antarctic ozone hole). PSC particles provide sites for heterogeneous reactions that convert stable chlorine reservoir species to radicals that destroy ozone c...
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ftnerc:oai:nora.nerc.ac.uk:530002 2023-05-15T13:41:45+02:00 Polar stratospheric clouds satellite observations, processes, and role in ozone depletion Tritscher, I. Pitts, M. C. Poole, L. R. Alexander, S. P. Cairo, F. Chipperfield, M. P. Grooß, J.‐U. Höpfner, M. Lambert, A. Luo, B. P. Molleker, S. Orr, A. Salawitch, R. Snels, M. Spang, R. Woiwode, W. Peter, T. 2021-06-10 text http://nora.nerc.ac.uk/id/eprint/530002/ https://nora.nerc.ac.uk/id/eprint/530002/1/2020RG000702.pdf https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020RG000702 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/530002/1/2020RG000702.pdf Tritscher, I.; Pitts, M. C.; Poole, L. R.; Alexander, S. P.; Cairo, F.; Chipperfield, M. P.; Grooß, J.‐U.; Höpfner, M.; Lambert, A.; Luo, B. P.; Molleker, S.; Orr, A. orcid:0000-0001-5111-8402 Salawitch, R.; Snels, M.; Spang, R.; Woiwode, W.; Peter, T. 2021 Polar stratospheric clouds satellite observations, processes, and role in ozone depletion. Reviews of Geophysics, 59 (2), e2020RG000702. 82, pp. https://doi.org/10.1029/2020RG000702 <https://doi.org/10.1029/2020RG000702> cc_by_4 CC-BY Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1029/2020RG000702 2023-02-04T19:51:57Z Polar stratospheric clouds (PSCs) play important roles in stratospheric ozone depletion during winter and spring at high latitudes (e.g., the Antarctic ozone hole). PSC particles provide sites for heterogeneous reactions that convert stable chlorine reservoir species to radicals that destroy ozone catalytically. PSCs also prolong ozone depletion by delaying chlorine deactivation through the removal of gas‐phase HNO3 and H2O by sedimentation of large NAT (nitric acid trihydrate) and ice particles. Contemporary observations by the spaceborne instruments MIPAS (Michelson Interferometer for Passive Atmospheric Sounding), MLS (Microwave Limb Sounder), and CALIOP (Cloud‐Aerosol Lidar with Orthogonal Polarization) have provided an unprecedented polar vortex‐wide climatological view of PSC occurrence and composition in both hemispheres. These data have spurred advances in our understanding of PSC formation and related dynamical processes, especially the firm evidence of widespread heterogeneous nucleation of both NAT and ice PSC particles, perhaps on nuclei of meteoritic origin. Heterogeneous chlorine activation appears to be well understood. Reaction coefficients on/in liquid droplets have been measured accurately, and while uncertainties remain for reactions on solid NAT and ice particles, they are considered relatively unimportant since under most conditions chlorine activation occurs on/in liquid droplets. There have been notable advances in the ability of chemical transport and chemistry‐climate models to reproduce PSC temporal/spatial distributions and composition observed from space. Continued spaceborne PSC observations will facilitate further improvements in the representation of PSC processes in global models and enable more accurate projections of the evolution of polar ozone and the global ozone layer as climate changes. Article in Journal/Newspaper Antarc* Antarctic Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Reviews of Geophysics 59 2 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
Polar stratospheric clouds (PSCs) play important roles in stratospheric ozone depletion during winter and spring at high latitudes (e.g., the Antarctic ozone hole). PSC particles provide sites for heterogeneous reactions that convert stable chlorine reservoir species to radicals that destroy ozone catalytically. PSCs also prolong ozone depletion by delaying chlorine deactivation through the removal of gas‐phase HNO3 and H2O by sedimentation of large NAT (nitric acid trihydrate) and ice particles. Contemporary observations by the spaceborne instruments MIPAS (Michelson Interferometer for Passive Atmospheric Sounding), MLS (Microwave Limb Sounder), and CALIOP (Cloud‐Aerosol Lidar with Orthogonal Polarization) have provided an unprecedented polar vortex‐wide climatological view of PSC occurrence and composition in both hemispheres. These data have spurred advances in our understanding of PSC formation and related dynamical processes, especially the firm evidence of widespread heterogeneous nucleation of both NAT and ice PSC particles, perhaps on nuclei of meteoritic origin. Heterogeneous chlorine activation appears to be well understood. Reaction coefficients on/in liquid droplets have been measured accurately, and while uncertainties remain for reactions on solid NAT and ice particles, they are considered relatively unimportant since under most conditions chlorine activation occurs on/in liquid droplets. There have been notable advances in the ability of chemical transport and chemistry‐climate models to reproduce PSC temporal/spatial distributions and composition observed from space. Continued spaceborne PSC observations will facilitate further improvements in the representation of PSC processes in global models and enable more accurate projections of the evolution of polar ozone and the global ozone layer as climate changes. |
format |
Article in Journal/Newspaper |
author |
Tritscher, I. Pitts, M. C. Poole, L. R. Alexander, S. P. Cairo, F. Chipperfield, M. P. Grooß, J.‐U. Höpfner, M. Lambert, A. Luo, B. P. Molleker, S. Orr, A. Salawitch, R. Snels, M. Spang, R. Woiwode, W. Peter, T. |
spellingShingle |
Tritscher, I. Pitts, M. C. Poole, L. R. Alexander, S. P. Cairo, F. Chipperfield, M. P. Grooß, J.‐U. Höpfner, M. Lambert, A. Luo, B. P. Molleker, S. Orr, A. Salawitch, R. Snels, M. Spang, R. Woiwode, W. Peter, T. Polar stratospheric clouds satellite observations, processes, and role in ozone depletion |
author_facet |
Tritscher, I. Pitts, M. C. Poole, L. R. Alexander, S. P. Cairo, F. Chipperfield, M. P. Grooß, J.‐U. Höpfner, M. Lambert, A. Luo, B. P. Molleker, S. Orr, A. Salawitch, R. Snels, M. Spang, R. Woiwode, W. Peter, T. |
author_sort |
Tritscher, I. |
title |
Polar stratospheric clouds satellite observations, processes, and role in ozone depletion |
title_short |
Polar stratospheric clouds satellite observations, processes, and role in ozone depletion |
title_full |
Polar stratospheric clouds satellite observations, processes, and role in ozone depletion |
title_fullStr |
Polar stratospheric clouds satellite observations, processes, and role in ozone depletion |
title_full_unstemmed |
Polar stratospheric clouds satellite observations, processes, and role in ozone depletion |
title_sort |
polar stratospheric clouds satellite observations, processes, and role in ozone depletion |
publisher |
American Geophysical Union |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/530002/ https://nora.nerc.ac.uk/id/eprint/530002/1/2020RG000702.pdf https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020RG000702 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://nora.nerc.ac.uk/id/eprint/530002/1/2020RG000702.pdf Tritscher, I.; Pitts, M. C.; Poole, L. R.; Alexander, S. P.; Cairo, F.; Chipperfield, M. P.; Grooß, J.‐U.; Höpfner, M.; Lambert, A.; Luo, B. P.; Molleker, S.; Orr, A. orcid:0000-0001-5111-8402 Salawitch, R.; Snels, M.; Spang, R.; Woiwode, W.; Peter, T. 2021 Polar stratospheric clouds satellite observations, processes, and role in ozone depletion. Reviews of Geophysics, 59 (2), e2020RG000702. 82, pp. https://doi.org/10.1029/2020RG000702 <https://doi.org/10.1029/2020RG000702> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2020RG000702 |
container_title |
Reviews of Geophysics |
container_volume |
59 |
container_issue |
2 |
_version_ |
1766157365447491584 |