First tomographic observations of gravity waves by the infrared limb imager GLORIA
Atmospheric gravity waves are a major cause of uncertainty in atmosphere general circulation models. This uncertainty affects regional climate projections and seasonal weather predictions. Improving the representation of gravity waves in general circulation models is therefore of primary interest. I...
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ftfzjuelichnvdb:oai:juser.fz-juelich.de:841712 2024-09-15T18:13:24+00:00 First tomographic observations of gravity waves by the infrared limb imager GLORIA Krisch, Isabell Preusse, Peter Strube, Cornelia Riese, Martin Ungermann, Jörn Dörnbrack, Andreas Eckermann, Stephen D. Ern, Manfred Friedl-Vallon, Felix Kaufmann, Martin Oelhaf, Hermann Rapp, Markus DE 2017 https://juser.fz-juelich.de/record/841712 https://juser.fz-juelich.de/search?p=id:%22FZJ-2018-00020%22 eng eng EGU info:eu-repo/semantics/altIdentifier/hdl/2128/16340 info:eu-repo/semantics/altIdentifier/wos/WOS:000418198000004 info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-17-14937-2017 info:eu-repo/semantics/altIdentifier/issn/1680-7316 info:eu-repo/semantics/altIdentifier/issn/1680-7324 https://juser.fz-juelich.de/record/841712 https://juser.fz-juelich.de/search?p=id:%22FZJ-2018-00020%22 info:eu-repo/semantics/openAccess Atmospheric chemistry and physics 17(24), 14937 - 14953 (2017). doi:10.5194/acp-17-14937-2017 info:eu-repo/classification/ddc/550 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2017 ftfzjuelichnvdb https://doi.org/10.5194/acp-17-14937-2017 2024-08-05T23:55:46Z Atmospheric gravity waves are a major cause of uncertainty in atmosphere general circulation models. This uncertainty affects regional climate projections and seasonal weather predictions. Improving the representation of gravity waves in general circulation models is therefore of primary interest. In this regard, measurements providing an accurate 3-D characterization of gravity waves are needed. Using the Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA), the first airborne implementation of a novel infrared limb imaging technique, a gravity wave event over Iceland was observed. An air volume disturbed by this gravity wave was investigated from different angles by encircling the volume with a closed flight pattern. Using a tomographic retrieval approach, the measurements of this air mass at different angles allowed for a 3-D reconstruction of the temperature and trace gas structure. The temperature measurements were used to derive gravity wave amplitudes, 3-D wave vectors, and direction-resolved momentum fluxes. These parameters facilitated the backtracing of the waves to their sources on the southern coast of Iceland. Two wave packets are distinguished, one stemming from the main mountain ridge in the south of Iceland and the other from the smaller mountains in the north. The total area-integrated fluxes of these two wave packets are determined. Forward ray tracing reveals that the waves propagate laterally more than 2000 km away from their source region. A comparison of a 3-D ray-tracing version to solely column-based propagation showed that lateral propagation can help the waves to avoid critical layers and propagate to higher altitudes. Thus, the implementation of oblique gravity wave propagation into general circulation models may improve their predictive skills. Article in Journal/Newspaper Iceland Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) Atmospheric Chemistry and Physics 17 24 14937 14953 |
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Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) |
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language |
English |
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info:eu-repo/classification/ddc/550 |
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info:eu-repo/classification/ddc/550 Krisch, Isabell Preusse, Peter Strube, Cornelia Riese, Martin Ungermann, Jörn Dörnbrack, Andreas Eckermann, Stephen D. Ern, Manfred Friedl-Vallon, Felix Kaufmann, Martin Oelhaf, Hermann Rapp, Markus First tomographic observations of gravity waves by the infrared limb imager GLORIA |
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info:eu-repo/classification/ddc/550 |
description |
Atmospheric gravity waves are a major cause of uncertainty in atmosphere general circulation models. This uncertainty affects regional climate projections and seasonal weather predictions. Improving the representation of gravity waves in general circulation models is therefore of primary interest. In this regard, measurements providing an accurate 3-D characterization of gravity waves are needed. Using the Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA), the first airborne implementation of a novel infrared limb imaging technique, a gravity wave event over Iceland was observed. An air volume disturbed by this gravity wave was investigated from different angles by encircling the volume with a closed flight pattern. Using a tomographic retrieval approach, the measurements of this air mass at different angles allowed for a 3-D reconstruction of the temperature and trace gas structure. The temperature measurements were used to derive gravity wave amplitudes, 3-D wave vectors, and direction-resolved momentum fluxes. These parameters facilitated the backtracing of the waves to their sources on the southern coast of Iceland. Two wave packets are distinguished, one stemming from the main mountain ridge in the south of Iceland and the other from the smaller mountains in the north. The total area-integrated fluxes of these two wave packets are determined. Forward ray tracing reveals that the waves propagate laterally more than 2000 km away from their source region. A comparison of a 3-D ray-tracing version to solely column-based propagation showed that lateral propagation can help the waves to avoid critical layers and propagate to higher altitudes. Thus, the implementation of oblique gravity wave propagation into general circulation models may improve their predictive skills. |
format |
Article in Journal/Newspaper |
author |
Krisch, Isabell Preusse, Peter Strube, Cornelia Riese, Martin Ungermann, Jörn Dörnbrack, Andreas Eckermann, Stephen D. Ern, Manfred Friedl-Vallon, Felix Kaufmann, Martin Oelhaf, Hermann Rapp, Markus |
author_facet |
Krisch, Isabell Preusse, Peter Strube, Cornelia Riese, Martin Ungermann, Jörn Dörnbrack, Andreas Eckermann, Stephen D. Ern, Manfred Friedl-Vallon, Felix Kaufmann, Martin Oelhaf, Hermann Rapp, Markus |
author_sort |
Krisch, Isabell |
title |
First tomographic observations of gravity waves by the infrared limb imager GLORIA |
title_short |
First tomographic observations of gravity waves by the infrared limb imager GLORIA |
title_full |
First tomographic observations of gravity waves by the infrared limb imager GLORIA |
title_fullStr |
First tomographic observations of gravity waves by the infrared limb imager GLORIA |
title_full_unstemmed |
First tomographic observations of gravity waves by the infrared limb imager GLORIA |
title_sort |
first tomographic observations of gravity waves by the infrared limb imager gloria |
publisher |
EGU |
publishDate |
2017 |
url |
https://juser.fz-juelich.de/record/841712 https://juser.fz-juelich.de/search?p=id:%22FZJ-2018-00020%22 |
op_coverage |
DE |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Atmospheric chemistry and physics 17(24), 14937 - 14953 (2017). doi:10.5194/acp-17-14937-2017 |
op_relation |
info:eu-repo/semantics/altIdentifier/hdl/2128/16340 info:eu-repo/semantics/altIdentifier/wos/WOS:000418198000004 info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-17-14937-2017 info:eu-repo/semantics/altIdentifier/issn/1680-7316 info:eu-repo/semantics/altIdentifier/issn/1680-7324 https://juser.fz-juelich.de/record/841712 https://juser.fz-juelich.de/search?p=id:%22FZJ-2018-00020%22 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-17-14937-2017 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
17 |
container_issue |
24 |
container_start_page |
14937 |
op_container_end_page |
14953 |
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1810451161852936192 |