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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ftfzjuelichnvdb:oai:juser.fz-juelich.de:906759 2023-05-15T14:56:36+02:00 Redistribution of total reactive nitrogen in the lowermost Arctic stratosphere during the cold winter 2015/2016 Ziereis, Helmut Hoor, Peter Rolf, Christian Woiwode, Wolfgang Braun, Marleen Ungermann, Jörn Marsing, Andreas Voigt, Christiane Engel, Andreas Sinnhuber, Björn-Martin Oelhaf, Hermann Grooß, Jens-Uwe Zahn, Andreas Stratmann, Greta Stock, Paul Lichtenstern, Michael Krause, Jens Bense, Vera Afchine, Armin DE 2022 https://juser.fz-juelich.de/record/906759 https://juser.fz-juelich.de/search?p=id:%22FZJ-2022-01674%22 eng eng EGU info:eu-repo/semantics/altIdentifier/hdl/2128/30847 info:eu-repo/semantics/altIdentifier/wos/WOS:000772232400001 info:eu-repo/semantics/altIdentifier/issn/1680-7316 info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-22-3631-2022 info:eu-repo/semantics/altIdentifier/issn/1680-7324 https://juser.fz-juelich.de/record/906759 https://juser.fz-juelich.de/search?p=id:%22FZJ-2022-01674%22 info:eu-repo/semantics/openAccess Atmospheric chemistry and physics 22(5), 3631 - 3654 (2022). doi:10.5194/acp-22-3631-2022 info:eu-repo/classification/ddc/550 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftfzjuelichnvdb https://doi.org/10.5194/acp-22-3631-2022 2022-07-14T11:24:16Z 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 Arctic Kiruna Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) Arctic Kiruna Atmospheric Chemistry and Physics 22 5 3631 3654 |
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Open Polar |
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Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) |
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ftfzjuelichnvdb |
language |
English |
topic |
info:eu-repo/classification/ddc/550 |
spellingShingle |
info:eu-repo/classification/ddc/550 Ziereis, Helmut Hoor, Peter Rolf, Christian Woiwode, Wolfgang Braun, Marleen Ungermann, Jörn Marsing, Andreas Voigt, Christiane Engel, Andreas Sinnhuber, Björn-Martin Oelhaf, Hermann Grooß, Jens-Uwe Zahn, Andreas Stratmann, Greta Stock, Paul Lichtenstern, Michael Krause, Jens Bense, Vera Afchine, Armin Redistribution of total reactive nitrogen in the lowermost Arctic stratosphere during the cold winter 2015/2016 |
topic_facet |
info:eu-repo/classification/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 Rolf, Christian Woiwode, Wolfgang Braun, Marleen Ungermann, Jörn Marsing, Andreas Voigt, Christiane Engel, Andreas Sinnhuber, Björn-Martin Oelhaf, Hermann Grooß, Jens-Uwe Zahn, Andreas Stratmann, Greta Stock, Paul Lichtenstern, Michael Krause, Jens Bense, Vera Afchine, Armin |
author_facet |
Ziereis, Helmut Hoor, Peter Rolf, Christian Woiwode, Wolfgang Braun, Marleen Ungermann, Jörn Marsing, Andreas Voigt, Christiane Engel, Andreas Sinnhuber, Björn-Martin Oelhaf, Hermann Grooß, Jens-Uwe Zahn, Andreas Stratmann, Greta Stock, Paul Lichtenstern, Michael Krause, Jens Bense, Vera Afchine, Armin |
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 |
publisher |
EGU |
publishDate |
2022 |
url |
https://juser.fz-juelich.de/record/906759 https://juser.fz-juelich.de/search?p=id:%22FZJ-2022-01674%22 |
op_coverage |
DE |
geographic |
Arctic Kiruna |
geographic_facet |
Arctic Kiruna |
genre |
Arctic Kiruna |
genre_facet |
Arctic Kiruna |
op_source |
Atmospheric chemistry and physics 22(5), 3631 - 3654 (2022). doi:10.5194/acp-22-3631-2022 |
op_relation |
info:eu-repo/semantics/altIdentifier/hdl/2128/30847 info:eu-repo/semantics/altIdentifier/wos/WOS:000772232400001 info:eu-repo/semantics/altIdentifier/issn/1680-7316 info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-22-3631-2022 info:eu-repo/semantics/altIdentifier/issn/1680-7324 https://juser.fz-juelich.de/record/906759 https://juser.fz-juelich.de/search?p=id:%22FZJ-2022-01674%22 |
op_rights |
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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1766328695257038848 |