Nitric acid trihydrate (NAT) formation at low NAT supersaturations
International audience A polar stratospheric cloud (PSC) was observed on 6 February 2003 in the Arctic stratosphere by in-situ measurements onboard the high-altitude research aircraft Geophysica. Low number densities (~10 ?4 cm ?3 ) of nitric acid (HNO 3 ) containing particles ? probably NAT ? with...
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ftccsdartic:oai:HAL:hal-00301636v1 2023-05-15T15:03:59+02:00 Nitric acid trihydrate (NAT) formation at low NAT supersaturations Voigt, C. Schlager, H. Luo, B. P. Dörnbrack, A. Roiger, Anke Stock, P. Curtius, J. Vössing, H. Borrmann, S. Davies, S. Konopka, P. Schiller, C. Shur, G. Peter, T. DLR Institut für Physik der Atmosphäre (IPA) Deutsches Zentrum für Luft- und Raumfahrt Oberpfaffenhofen-Wessling (DLR) Institute for Atmospheric and Climate Science Zürich (IAC) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) Max-Planck-Institut für Chemie (MPIC) Max-Planck-Gesellschaft School of Environment Forschungszentrum Jülich GmbH Helmholtz-Gemeinschaft = Helmholtz Association Central Aerological Observatory (CAO) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) 2004-12-23 https://hal.archives-ouvertes.fr/hal-00301636 https://hal.archives-ouvertes.fr/hal-00301636/document https://hal.archives-ouvertes.fr/hal-00301636/file/acpd-4-8579-2004.pdf en eng HAL CCSD European Geosciences Union hal-00301636 https://hal.archives-ouvertes.fr/hal-00301636 https://hal.archives-ouvertes.fr/hal-00301636/document https://hal.archives-ouvertes.fr/hal-00301636/file/acpd-4-8579-2004.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.archives-ouvertes.fr/hal-00301636 Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2004, 4 (6), pp.8579-8607 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2004 ftccsdartic 2021-12-19T04:10:59Z International audience A polar stratospheric cloud (PSC) was observed on 6 February 2003 in the Arctic stratosphere by in-situ measurements onboard the high-altitude research aircraft Geophysica. Low number densities (~10 ?4 cm ?3 ) of nitric acid (HNO 3 ) containing particles ? probably NAT ? with diameters up to 6 µm were measured at altitudes between 18 and 20 km. These particles have the potential to grow further and to remove HNO 3 from the stratosphere, thereby enhancing polar ozone loss. Interestingly, the NAT particles formed in less than a day at temperatures T > T NAT ?3.5 K, just slightly below the NAT equilibrium temperature T NAT . This unique measurement of PSC formation at extremely low NAT saturation ratios ( S NAT ?11) constrains current NAT nucleation theories. In particular, NAT formation on ice can for certain be excluded. Conversely, we suggest that meteoritic particles may be favorable candidates for triggering nucleation of NAT at the observed low number densities. Article in Journal/Newspaper Arctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Voigt, C. Schlager, H. Luo, B. P. Dörnbrack, A. Roiger, Anke Stock, P. Curtius, J. Vössing, H. Borrmann, S. Davies, S. Konopka, P. Schiller, C. Shur, G. Peter, T. Nitric acid trihydrate (NAT) formation at low NAT supersaturations |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience A polar stratospheric cloud (PSC) was observed on 6 February 2003 in the Arctic stratosphere by in-situ measurements onboard the high-altitude research aircraft Geophysica. Low number densities (~10 ?4 cm ?3 ) of nitric acid (HNO 3 ) containing particles ? probably NAT ? with diameters up to 6 µm were measured at altitudes between 18 and 20 km. These particles have the potential to grow further and to remove HNO 3 from the stratosphere, thereby enhancing polar ozone loss. Interestingly, the NAT particles formed in less than a day at temperatures T > T NAT ?3.5 K, just slightly below the NAT equilibrium temperature T NAT . This unique measurement of PSC formation at extremely low NAT saturation ratios ( S NAT ?11) constrains current NAT nucleation theories. In particular, NAT formation on ice can for certain be excluded. Conversely, we suggest that meteoritic particles may be favorable candidates for triggering nucleation of NAT at the observed low number densities. |
author2 |
DLR Institut für Physik der Atmosphäre (IPA) Deutsches Zentrum für Luft- und Raumfahrt Oberpfaffenhofen-Wessling (DLR) Institute for Atmospheric and Climate Science Zürich (IAC) Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich) Max-Planck-Institut für Chemie (MPIC) Max-Planck-Gesellschaft School of Environment Forschungszentrum Jülich GmbH Helmholtz-Gemeinschaft = Helmholtz Association Central Aerological Observatory (CAO) Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) |
format |
Article in Journal/Newspaper |
author |
Voigt, C. Schlager, H. Luo, B. P. Dörnbrack, A. Roiger, Anke Stock, P. Curtius, J. Vössing, H. Borrmann, S. Davies, S. Konopka, P. Schiller, C. Shur, G. Peter, T. |
author_facet |
Voigt, C. Schlager, H. Luo, B. P. Dörnbrack, A. Roiger, Anke Stock, P. Curtius, J. Vössing, H. Borrmann, S. Davies, S. Konopka, P. Schiller, C. Shur, G. Peter, T. |
author_sort |
Voigt, C. |
title |
Nitric acid trihydrate (NAT) formation at low NAT supersaturations |
title_short |
Nitric acid trihydrate (NAT) formation at low NAT supersaturations |
title_full |
Nitric acid trihydrate (NAT) formation at low NAT supersaturations |
title_fullStr |
Nitric acid trihydrate (NAT) formation at low NAT supersaturations |
title_full_unstemmed |
Nitric acid trihydrate (NAT) formation at low NAT supersaturations |
title_sort |
nitric acid trihydrate (nat) formation at low nat supersaturations |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.archives-ouvertes.fr/hal-00301636 https://hal.archives-ouvertes.fr/hal-00301636/document https://hal.archives-ouvertes.fr/hal-00301636/file/acpd-4-8579-2004.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.archives-ouvertes.fr/hal-00301636 Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2004, 4 (6), pp.8579-8607 |
op_relation |
hal-00301636 https://hal.archives-ouvertes.fr/hal-00301636 https://hal.archives-ouvertes.fr/hal-00301636/document https://hal.archives-ouvertes.fr/hal-00301636/file/acpd-4-8579-2004.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766335819363123200 |