Stratospheric water vapour as tracer for vortex filamentation in the Arctic winter 2002/2003
International audience During winter 2002/2003, three balloon-borne frost point hygrometers measured high-resolution profiles of stratospheric water vapour above Ny-Ålesund, Spitsbergen. All measurements reveal a high H 2 O mixing ratio of about 7 ppmv above 24 km, thus differing significantly from...
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ftinsu:oai:HAL:hal-00327873v1 2024-02-11T10:01:49+01:00 Stratospheric water vapour as tracer for vortex filamentation in the Arctic winter 2002/2003 Müller, M. Neuber, R. Fierli, Federico Hauchecorne, Alain Vömel, H. Oltmans, S. J. Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association Istituto di Scienze dell'Atmosfera e del Clima (ISAC) National Research Council of Italy Service d'aéronomie (SA) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Cooperative Institute for Research in Environmental Sciences (CIRES) University of Colorado Boulder -National Oceanic and Atmospheric Administration (NOAA) NOAA Climate Monitoring and Diagnostics Laboratory (CMDL) National Oceanic and Atmospheric Administration (NOAA) 2003-08-05 https://hal.science/hal-00327873 https://hal.science/hal-00327873/document https://hal.science/hal-00327873/file/acpd-3-4393-2003.pdf en eng HAL CCSD European Geosciences Union hal-00327873 https://hal.science/hal-00327873 https://hal.science/hal-00327873/document https://hal.science/hal-00327873/file/acpd-3-4393-2003.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00327873 Atmospheric Chemistry and Physics Discussions, 2003, 3 (4), pp.4393-4410 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2003 ftinsu 2024-01-17T17:26:31Z International audience During winter 2002/2003, three balloon-borne frost point hygrometers measured high-resolution profiles of stratospheric water vapour above Ny-Ålesund, Spitsbergen. All measurements reveal a high H 2 O mixing ratio of about 7 ppmv above 24 km, thus differing significantly from the 5 ppmv that are commonly assumed for the calculation of polar stratospheric cloud existence temperatures. The profiles obtained on 12 December 2002 and on 17 January 2003 provide an insight into the vertical distribution of water vapour in the core of the polar vortex. Unlike the earlier profiles, the water vapour sounding on 11 February 2003 detected the vortex edge region in the lower part of the stratosphere. Here, a striking diminuition in H 2 O mixing ratio stands out between 16 and 19 km. The according stratospheric temperatures clarify that this dehydration can not be caused by the presence of polar stratospheric clouds or earlier PSC particle sedimentation. On the same day, ozone observations by lidar indicate a large scale movement of the polar vortex, while an ozone sonde measurement even shows laminae in the same altitude range as in the water vapour profile. Tracer lamination in the vortex edge region is caused by filamentation of the vortex. The link between the observed water vapour diminuition and filaments in the vortex edge region is highlighted by results of the MIMOSA contour advection model. In the altitude of interest, adjoined filaments of polar and mid-latitudinal air can be identified above the Spitsbergen region. A vertical cross-section reveals that the water vapour sonde has flown through polar air in the lowest part of the stratosphere. Where the low water vapour mixing ratio was detected, the balloon passed through air from a mid-latitudinal filament from about 425 to 445 K, before it finally entered the polar vortex above 450 K. The MIMOSA model results elucidate the correlation that on 11 February 2003 the frost point hygrometer measured strongly variable water vapour ... Article in Journal/Newspaper Arctic Ny Ålesund Ny-Ålesund Spitsbergen Institut national des sciences de l'Univers: HAL-INSU Arctic Ny-Ålesund |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Müller, M. Neuber, R. Fierli, Federico Hauchecorne, Alain Vömel, H. Oltmans, S. J. Stratospheric water vapour as tracer for vortex filamentation in the Arctic winter 2002/2003 |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience During winter 2002/2003, three balloon-borne frost point hygrometers measured high-resolution profiles of stratospheric water vapour above Ny-Ålesund, Spitsbergen. All measurements reveal a high H 2 O mixing ratio of about 7 ppmv above 24 km, thus differing significantly from the 5 ppmv that are commonly assumed for the calculation of polar stratospheric cloud existence temperatures. The profiles obtained on 12 December 2002 and on 17 January 2003 provide an insight into the vertical distribution of water vapour in the core of the polar vortex. Unlike the earlier profiles, the water vapour sounding on 11 February 2003 detected the vortex edge region in the lower part of the stratosphere. Here, a striking diminuition in H 2 O mixing ratio stands out between 16 and 19 km. The according stratospheric temperatures clarify that this dehydration can not be caused by the presence of polar stratospheric clouds or earlier PSC particle sedimentation. On the same day, ozone observations by lidar indicate a large scale movement of the polar vortex, while an ozone sonde measurement even shows laminae in the same altitude range as in the water vapour profile. Tracer lamination in the vortex edge region is caused by filamentation of the vortex. The link between the observed water vapour diminuition and filaments in the vortex edge region is highlighted by results of the MIMOSA contour advection model. In the altitude of interest, adjoined filaments of polar and mid-latitudinal air can be identified above the Spitsbergen region. A vertical cross-section reveals that the water vapour sonde has flown through polar air in the lowest part of the stratosphere. Where the low water vapour mixing ratio was detected, the balloon passed through air from a mid-latitudinal filament from about 425 to 445 K, before it finally entered the polar vortex above 450 K. The MIMOSA model results elucidate the correlation that on 11 February 2003 the frost point hygrometer measured strongly variable water vapour ... |
author2 |
Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association Istituto di Scienze dell'Atmosfera e del Clima (ISAC) National Research Council of Italy Service d'aéronomie (SA) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Cooperative Institute for Research in Environmental Sciences (CIRES) University of Colorado Boulder -National Oceanic and Atmospheric Administration (NOAA) NOAA Climate Monitoring and Diagnostics Laboratory (CMDL) National Oceanic and Atmospheric Administration (NOAA) |
format |
Article in Journal/Newspaper |
author |
Müller, M. Neuber, R. Fierli, Federico Hauchecorne, Alain Vömel, H. Oltmans, S. J. |
author_facet |
Müller, M. Neuber, R. Fierli, Federico Hauchecorne, Alain Vömel, H. Oltmans, S. J. |
author_sort |
Müller, M. |
title |
Stratospheric water vapour as tracer for vortex filamentation in the Arctic winter 2002/2003 |
title_short |
Stratospheric water vapour as tracer for vortex filamentation in the Arctic winter 2002/2003 |
title_full |
Stratospheric water vapour as tracer for vortex filamentation in the Arctic winter 2002/2003 |
title_fullStr |
Stratospheric water vapour as tracer for vortex filamentation in the Arctic winter 2002/2003 |
title_full_unstemmed |
Stratospheric water vapour as tracer for vortex filamentation in the Arctic winter 2002/2003 |
title_sort |
stratospheric water vapour as tracer for vortex filamentation in the arctic winter 2002/2003 |
publisher |
HAL CCSD |
publishDate |
2003 |
url |
https://hal.science/hal-00327873 https://hal.science/hal-00327873/document https://hal.science/hal-00327873/file/acpd-3-4393-2003.pdf |
geographic |
Arctic Ny-Ålesund |
geographic_facet |
Arctic Ny-Ålesund |
genre |
Arctic Ny Ålesund Ny-Ålesund Spitsbergen |
genre_facet |
Arctic Ny Ålesund Ny-Ålesund Spitsbergen |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00327873 Atmospheric Chemistry and Physics Discussions, 2003, 3 (4), pp.4393-4410 |
op_relation |
hal-00327873 https://hal.science/hal-00327873 https://hal.science/hal-00327873/document https://hal.science/hal-00327873/file/acpd-3-4393-2003.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1790597623952965632 |