3-D tomographic observations of Rossby wave breaking over the Northern Atlantic during the WISE aircraft campaign in 2017
We present measurements of ozone, water vapour and nitric acid in the upper troposphere/lower stratosphere (UTLS) over North Atlantic and Europe. The measurements were acquired with the Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) during the Wave Driven Isentropic Exchange...
Main Authors: | , , , , , , , , , , |
---|---|
Format: | Conference Object |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | https://juser.fz-juelich.de/record/894192 https://juser.fz-juelich.de/search?p=id:%22FZJ-2021-03083%22 |
id |
ftfzjuelichnvdb:oai:juser.fz-juelich.de:894192 |
---|---|
record_format |
openpolar |
spelling |
ftfzjuelichnvdb:oai:juser.fz-juelich.de:894192 2024-09-15T18:24:18+00:00 3-D tomographic observations of Rossby wave breaking over the Northern Atlantic during the WISE aircraft campaign in 2017 Krasauskas, Lukas Ungermann, Jörn Riese, Martin Preusse, Peter Friedl-Vallon, Felix Zahn, Andreas Ziereis, Helmut Rolf, Christian Plöger, Felix Konopka, Paul Vogel, Bärbel DE 2021 https://juser.fz-juelich.de/record/894192 https://juser.fz-juelich.de/search?p=id:%22FZJ-2021-03083%22 eng eng info:eu-repo/semantics/altIdentifier/hdl/2128/28339 info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu21-13777 https://juser.fz-juelich.de/record/894192 https://juser.fz-juelich.de/search?p=id:%22FZJ-2021-03083%22 info:eu-repo/semantics/openAccess doi:10.5194/egusphere-egu21-13777 EGU General Assembly, virtuell, Austria, 2021-04-19 - 2021-04-30 info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion 2021 ftfzjuelichnvdb https://doi.org/10.5194/egusphere-egu21-13777 2024-08-05T23:55:47Z We present measurements of ozone, water vapour and nitric acid in the upper troposphere/lower stratosphere (UTLS) over North Atlantic and Europe. The measurements were acquired with the Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) during the Wave Driven Isentropic Exchange (WISE) campaign in October 2017. GLORIA is an airborne limb imager capable of acquiring both 2-D data sets (curtains along the flight path) and, when the carrier aircraft is flying around the observed air mass, spatially highly resolved 3-D tomographic data. We show a case study of a Rossby wave (RW) breaking event observed during two subsequent flights two days apart. RW breaking is known to steepen tracer gradients and facilitate stratosphere-troposphere exchange (STE). Our measurements reveal complex spatial structures in stratospheric tracers (ozone and nitric acid) with multiple vertically stacked filaments. Backward trajectory analysis is used to demonstrate that these features are related to several previous Rossby wave breaking events and that the small-scale structure of the UTLS in the Rossby wave breaking region, which is otherwise very hard to observe, can be understood as stirring and mixing of air masses of tropospheric and stratospheric origin. It is also shown that a strong nitric acid enhancement observed just above the tropopause is likely a result of NO x production by lightning activity. The measurements showed signatures of enhanced mixing between stratospheric and tropospheric air near the polar jet with some transport of water vapour into the stratosphere. Some of the air masses seen in 3-D data were encountered again two days later, stretched to very thin filament (horizontal thickness down to 30 km at some altitudes) rich in stratospheric tracers. This repeated measurement allowed us to directly observe and analyse the progress of mixing processes in a thin filament over two days. Our results provide direct insight into small-scale dynamics of the UTLS in the Rossby wave breaking region, ... Conference Object North Atlantic Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) |
institution |
Open Polar |
collection |
Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) |
op_collection_id |
ftfzjuelichnvdb |
language |
English |
description |
We present measurements of ozone, water vapour and nitric acid in the upper troposphere/lower stratosphere (UTLS) over North Atlantic and Europe. The measurements were acquired with the Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) during the Wave Driven Isentropic Exchange (WISE) campaign in October 2017. GLORIA is an airborne limb imager capable of acquiring both 2-D data sets (curtains along the flight path) and, when the carrier aircraft is flying around the observed air mass, spatially highly resolved 3-D tomographic data. We show a case study of a Rossby wave (RW) breaking event observed during two subsequent flights two days apart. RW breaking is known to steepen tracer gradients and facilitate stratosphere-troposphere exchange (STE). Our measurements reveal complex spatial structures in stratospheric tracers (ozone and nitric acid) with multiple vertically stacked filaments. Backward trajectory analysis is used to demonstrate that these features are related to several previous Rossby wave breaking events and that the small-scale structure of the UTLS in the Rossby wave breaking region, which is otherwise very hard to observe, can be understood as stirring and mixing of air masses of tropospheric and stratospheric origin. It is also shown that a strong nitric acid enhancement observed just above the tropopause is likely a result of NO x production by lightning activity. The measurements showed signatures of enhanced mixing between stratospheric and tropospheric air near the polar jet with some transport of water vapour into the stratosphere. Some of the air masses seen in 3-D data were encountered again two days later, stretched to very thin filament (horizontal thickness down to 30 km at some altitudes) rich in stratospheric tracers. This repeated measurement allowed us to directly observe and analyse the progress of mixing processes in a thin filament over two days. Our results provide direct insight into small-scale dynamics of the UTLS in the Rossby wave breaking region, ... |
format |
Conference Object |
author |
Krasauskas, Lukas Ungermann, Jörn Riese, Martin Preusse, Peter Friedl-Vallon, Felix Zahn, Andreas Ziereis, Helmut Rolf, Christian Plöger, Felix Konopka, Paul Vogel, Bärbel |
spellingShingle |
Krasauskas, Lukas Ungermann, Jörn Riese, Martin Preusse, Peter Friedl-Vallon, Felix Zahn, Andreas Ziereis, Helmut Rolf, Christian Plöger, Felix Konopka, Paul Vogel, Bärbel 3-D tomographic observations of Rossby wave breaking over the Northern Atlantic during the WISE aircraft campaign in 2017 |
author_facet |
Krasauskas, Lukas Ungermann, Jörn Riese, Martin Preusse, Peter Friedl-Vallon, Felix Zahn, Andreas Ziereis, Helmut Rolf, Christian Plöger, Felix Konopka, Paul Vogel, Bärbel |
author_sort |
Krasauskas, Lukas |
title |
3-D tomographic observations of Rossby wave breaking over the Northern Atlantic during the WISE aircraft campaign in 2017 |
title_short |
3-D tomographic observations of Rossby wave breaking over the Northern Atlantic during the WISE aircraft campaign in 2017 |
title_full |
3-D tomographic observations of Rossby wave breaking over the Northern Atlantic during the WISE aircraft campaign in 2017 |
title_fullStr |
3-D tomographic observations of Rossby wave breaking over the Northern Atlantic during the WISE aircraft campaign in 2017 |
title_full_unstemmed |
3-D tomographic observations of Rossby wave breaking over the Northern Atlantic during the WISE aircraft campaign in 2017 |
title_sort |
3-d tomographic observations of rossby wave breaking over the northern atlantic during the wise aircraft campaign in 2017 |
publishDate |
2021 |
url |
https://juser.fz-juelich.de/record/894192 https://juser.fz-juelich.de/search?p=id:%22FZJ-2021-03083%22 |
op_coverage |
DE |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
doi:10.5194/egusphere-egu21-13777 EGU General Assembly, virtuell, Austria, 2021-04-19 - 2021-04-30 |
op_relation |
info:eu-repo/semantics/altIdentifier/hdl/2128/28339 info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu21-13777 https://juser.fz-juelich.de/record/894192 https://juser.fz-juelich.de/search?p=id:%22FZJ-2021-03083%22 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/egusphere-egu21-13777 |
_version_ |
1810464637190144000 |