Redistribution of total reactive nitrogen in the lowermost Arctic stratosphere during the cold winter 2015/2016
During winter 2015/2016, the Arctic stratosphere was characterized by extraordinarily low temperatures in connection with a very strong polar vortex and with the occurrence of extensive polar stratospheric clouds. From mid-December 2015 until mid-March 2016, the German research aircraft HALO (High A...
Published in: | Atmospheric Chemistry and Physics |
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Online Access: | http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/75174 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-751748 https://doi.org/10.5194/acp-22-3631-2022 http://publikationen.ub.uni-frankfurt.de/files/75174/acp-22-3631-2022.pdf |
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ftunivfrankfurt:oai:publikationen.ub.uni-frankfurt.de:75174 2024-09-15T18:16:52+00:00 Redistribution of total reactive nitrogen in the lowermost Arctic stratosphere during the cold winter 2015/2016 Ziereis, Helmut Hoor, Peter Grooß, Jens-Uwe Zahn, Andreas Stratmann, Greta Annabell Stock, Paul Lichtenstern, Michael Krause, Jens Bense, Vera Afchine, Armin Rolf, Christian Woiwode, Wolfgang Braun, Marleen Ungermann, Jörn Marsing, Andreas Voigt, Christiane Engel, Andreas Sinnhuber, Björn-Martin Oelhaf, Hermann 2022-03-17 application/pdf http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/75174 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-751748 https://doi.org/10.5194/acp-22-3631-2022 http://publikationen.ub.uni-frankfurt.de/files/75174/acp-22-3631-2022.pdf eng eng http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/75174 urn:nbn:de:hebis:30:3-751748 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-751748 https://doi.org/10.5194/acp-22-3631-2022 http://publikationen.ub.uni-frankfurt.de/files/75174/acp-22-3631-2022.pdf https://creativecommons.org/licenses/by/4.0/deed.de info:eu-repo/semantics/openAccess ddc:530 ddc:550 article doc-type:article 2022 ftunivfrankfurt https://doi.org/10.5194/acp-22-3631-2022 2024-08-20T23:40:56Z During winter 2015/2016, the Arctic stratosphere was characterized by extraordinarily low temperatures in connection with a very strong polar vortex and with the occurrence of extensive polar stratospheric clouds. From mid-December 2015 until mid-March 2016, the German research aircraft HALO (High Altitude and Long-Range Research Aircraft) was deployed to probe the lowermost stratosphere in the Arctic region within the POLSTRACC (Polar Stratosphere in a Changing Climate) mission. More than 20 flights have been conducted out of Kiruna, Sweden, and Oberpfaffenhofen, Germany, covering the whole winter period. Besides total reactive nitrogen (NOy), observations of nitrous oxide, nitric acid, ozone, and water were used for this study. Total reactive nitrogen and its partitioning between the gas and particle phases are key parameters for understanding processes controlling the ozone budget in the polar winter stratosphere. The vertical redistribution of total reactive nitrogen was evaluated by using tracer–tracer correlations (NOy–N2O and NOy–O3). The trace gases are well correlated as long as the NOy distribution is controlled by its gas-phase production from N2O. Deviations of the observed NOy from this correlation indicate the influence of heterogeneous processes. In early winter no such deviations have been observed. In January, however, air masses with extensive nitrification were encountered at altitudes between 12 and 15 km. The excess NOy amounted to about 6 ppb. During several flights, along with gas-phase nitrification, indications for extensive occurrence of nitric acid containing particles at flight altitude were found. These observations support the assumption of sedimentation and subsequent evaporation of nitric acid-containing particles, leading to redistribution of total reactive nitrogen at lower altitudes. Remnants of nitrified air masses have been observed until mid-March. Between the end of February and mid-March, denitrified air masses have also been observed in connection with high potential ... Article in Journal/Newspaper Kiruna Publication Server of Goethe University Frankfurt am Main Atmospheric Chemistry and Physics 22 5 3631 3654 |
institution |
Open Polar |
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Publication Server of Goethe University Frankfurt am Main |
op_collection_id |
ftunivfrankfurt |
language |
English |
topic |
ddc:530 ddc:550 |
spellingShingle |
ddc:530 ddc:550 Ziereis, Helmut Hoor, Peter Grooß, Jens-Uwe Zahn, Andreas Stratmann, Greta Annabell Stock, Paul Lichtenstern, Michael Krause, Jens Bense, Vera Afchine, Armin Rolf, Christian Woiwode, Wolfgang Braun, Marleen Ungermann, Jörn Marsing, Andreas Voigt, Christiane Engel, Andreas Sinnhuber, Björn-Martin Oelhaf, Hermann Redistribution of total reactive nitrogen in the lowermost Arctic stratosphere during the cold winter 2015/2016 |
topic_facet |
ddc:530 ddc:550 |
description |
During winter 2015/2016, the Arctic stratosphere was characterized by extraordinarily low temperatures in connection with a very strong polar vortex and with the occurrence of extensive polar stratospheric clouds. From mid-December 2015 until mid-March 2016, the German research aircraft HALO (High Altitude and Long-Range Research Aircraft) was deployed to probe the lowermost stratosphere in the Arctic region within the POLSTRACC (Polar Stratosphere in a Changing Climate) mission. More than 20 flights have been conducted out of Kiruna, Sweden, and Oberpfaffenhofen, Germany, covering the whole winter period. Besides total reactive nitrogen (NOy), observations of nitrous oxide, nitric acid, ozone, and water were used for this study. Total reactive nitrogen and its partitioning between the gas and particle phases are key parameters for understanding processes controlling the ozone budget in the polar winter stratosphere. The vertical redistribution of total reactive nitrogen was evaluated by using tracer–tracer correlations (NOy–N2O and NOy–O3). The trace gases are well correlated as long as the NOy distribution is controlled by its gas-phase production from N2O. Deviations of the observed NOy from this correlation indicate the influence of heterogeneous processes. In early winter no such deviations have been observed. In January, however, air masses with extensive nitrification were encountered at altitudes between 12 and 15 km. The excess NOy amounted to about 6 ppb. During several flights, along with gas-phase nitrification, indications for extensive occurrence of nitric acid containing particles at flight altitude were found. These observations support the assumption of sedimentation and subsequent evaporation of nitric acid-containing particles, leading to redistribution of total reactive nitrogen at lower altitudes. Remnants of nitrified air masses have been observed until mid-March. Between the end of February and mid-March, denitrified air masses have also been observed in connection with high potential ... |
format |
Article in Journal/Newspaper |
author |
Ziereis, Helmut Hoor, Peter Grooß, Jens-Uwe Zahn, Andreas Stratmann, Greta Annabell Stock, Paul Lichtenstern, Michael Krause, Jens Bense, Vera Afchine, Armin Rolf, Christian Woiwode, Wolfgang Braun, Marleen Ungermann, Jörn Marsing, Andreas Voigt, Christiane Engel, Andreas Sinnhuber, Björn-Martin Oelhaf, Hermann |
author_facet |
Ziereis, Helmut Hoor, Peter Grooß, Jens-Uwe Zahn, Andreas Stratmann, Greta Annabell Stock, Paul Lichtenstern, Michael Krause, Jens Bense, Vera Afchine, Armin Rolf, Christian Woiwode, Wolfgang Braun, Marleen Ungermann, Jörn Marsing, Andreas Voigt, Christiane Engel, Andreas Sinnhuber, Björn-Martin Oelhaf, Hermann |
author_sort |
Ziereis, Helmut |
title |
Redistribution of total reactive nitrogen in the lowermost Arctic stratosphere during the cold winter 2015/2016 |
title_short |
Redistribution of total reactive nitrogen in the lowermost Arctic stratosphere during the cold winter 2015/2016 |
title_full |
Redistribution of total reactive nitrogen in the lowermost Arctic stratosphere during the cold winter 2015/2016 |
title_fullStr |
Redistribution of total reactive nitrogen in the lowermost Arctic stratosphere during the cold winter 2015/2016 |
title_full_unstemmed |
Redistribution of total reactive nitrogen in the lowermost Arctic stratosphere during the cold winter 2015/2016 |
title_sort |
redistribution of total reactive nitrogen in the lowermost arctic stratosphere during the cold winter 2015/2016 |
publishDate |
2022 |
url |
http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/75174 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-751748 https://doi.org/10.5194/acp-22-3631-2022 http://publikationen.ub.uni-frankfurt.de/files/75174/acp-22-3631-2022.pdf |
genre |
Kiruna |
genre_facet |
Kiruna |
op_relation |
http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/75174 urn:nbn:de:hebis:30:3-751748 https://nbn-resolving.org/urn:nbn:de:hebis:30:3-751748 https://doi.org/10.5194/acp-22-3631-2022 http://publikationen.ub.uni-frankfurt.de/files/75174/acp-22-3631-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/deed.de info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-22-3631-2022 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
22 |
container_issue |
5 |
container_start_page |
3631 |
op_container_end_page |
3654 |
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1810454858596089856 |