Large Midlatitude Stratospheric Temperature Variability Caused by Inertial Instability: A Potential Source of Bias for Gravity Wave Climatologies
Stratospheric temperature perturbations (TP) that have previously been misinterpreted as due to gravity waves are revisited. The perturbations observed by radio occultations during December 2015 had peak‐to‐peak amplitudes of 10 K extending from the equator to midlatitudes. The vertically stacked an...
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ftfzjuelichnvdb:oai:juser.fz-juelich.de:857910 2023-05-15T18:02:15+02:00 Large Midlatitude Stratospheric Temperature Variability Caused by Inertial Instability: A Potential Source of Bias for Gravity Wave Climatologies Rapp, M. Dörnbrack, A. Preusse, P. DE 2018 https://juser.fz-juelich.de/record/857910 https://juser.fz-juelich.de/search?p=id:%22FZJ-2018-06864%22 eng eng Wiley info:eu-repo/semantics/altIdentifier/issn/0094-8276 info:eu-repo/semantics/altIdentifier/doi/10.1029/2018GL079142 info:eu-repo/semantics/altIdentifier/issn/1944-8007 info:eu-repo/semantics/altIdentifier/hdl/2128/20213 info:eu-repo/semantics/altIdentifier/wos/WOS:000448656800073 https://juser.fz-juelich.de/record/857910 https://juser.fz-juelich.de/search?p=id:%22FZJ-2018-06864%22 info:eu-repo/semantics/embargoedAccess Geophysical research letters 45(19), 10,682 - 10,690 (2018). doi:10.1029/2018GL079142 info:eu-repo/classification/ddc/550 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftfzjuelichnvdb https://doi.org/10.1029/2018GL079142 2022-07-14T11:16:42Z Stratospheric temperature perturbations (TP) that have previously been misinterpreted as due to gravity waves are revisited. The perturbations observed by radio occultations during December 2015 had peak‐to‐peak amplitudes of 10 K extending from the equator to midlatitudes. The vertically stacked and horizontally flat structures had a vertical wavelength of 12 km. The signs of the TP were 180∘ phase shifted between equatorial and midlatitudes at fixed altitude levels. High‐resolution operational analyses reveal that these shallow temperature structures were caused by inertial instability due to the large meridional shear of the polar night jet at its equatorward flank in combination with Rossby wave breaking. Large stratospheric TP owing to inertial instability do frequently occur in the Northern Hemisphere (Southern Hemisphere) from October to April (April to October) in the 39 years of ECMWF Re‐Analysis‐Interim data. During 10% of the days, TP exceed 5 K (peak to peak). Article in Journal/Newspaper polar night Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) Geophysical Research Letters 45 19 10,682 10,690 |
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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 |
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info:eu-repo/classification/ddc/550 Rapp, M. Dörnbrack, A. Preusse, P. Large Midlatitude Stratospheric Temperature Variability Caused by Inertial Instability: A Potential Source of Bias for Gravity Wave Climatologies |
topic_facet |
info:eu-repo/classification/ddc/550 |
description |
Stratospheric temperature perturbations (TP) that have previously been misinterpreted as due to gravity waves are revisited. The perturbations observed by radio occultations during December 2015 had peak‐to‐peak amplitudes of 10 K extending from the equator to midlatitudes. The vertically stacked and horizontally flat structures had a vertical wavelength of 12 km. The signs of the TP were 180∘ phase shifted between equatorial and midlatitudes at fixed altitude levels. High‐resolution operational analyses reveal that these shallow temperature structures were caused by inertial instability due to the large meridional shear of the polar night jet at its equatorward flank in combination with Rossby wave breaking. Large stratospheric TP owing to inertial instability do frequently occur in the Northern Hemisphere (Southern Hemisphere) from October to April (April to October) in the 39 years of ECMWF Re‐Analysis‐Interim data. During 10% of the days, TP exceed 5 K (peak to peak). |
format |
Article in Journal/Newspaper |
author |
Rapp, M. Dörnbrack, A. Preusse, P. |
author_facet |
Rapp, M. Dörnbrack, A. Preusse, P. |
author_sort |
Rapp, M. |
title |
Large Midlatitude Stratospheric Temperature Variability Caused by Inertial Instability: A Potential Source of Bias for Gravity Wave Climatologies |
title_short |
Large Midlatitude Stratospheric Temperature Variability Caused by Inertial Instability: A Potential Source of Bias for Gravity Wave Climatologies |
title_full |
Large Midlatitude Stratospheric Temperature Variability Caused by Inertial Instability: A Potential Source of Bias for Gravity Wave Climatologies |
title_fullStr |
Large Midlatitude Stratospheric Temperature Variability Caused by Inertial Instability: A Potential Source of Bias for Gravity Wave Climatologies |
title_full_unstemmed |
Large Midlatitude Stratospheric Temperature Variability Caused by Inertial Instability: A Potential Source of Bias for Gravity Wave Climatologies |
title_sort |
large midlatitude stratospheric temperature variability caused by inertial instability: a potential source of bias for gravity wave climatologies |
publisher |
Wiley |
publishDate |
2018 |
url |
https://juser.fz-juelich.de/record/857910 https://juser.fz-juelich.de/search?p=id:%22FZJ-2018-06864%22 |
op_coverage |
DE |
genre |
polar night |
genre_facet |
polar night |
op_source |
Geophysical research letters 45(19), 10,682 - 10,690 (2018). doi:10.1029/2018GL079142 |
op_relation |
info:eu-repo/semantics/altIdentifier/issn/0094-8276 info:eu-repo/semantics/altIdentifier/doi/10.1029/2018GL079142 info:eu-repo/semantics/altIdentifier/issn/1944-8007 info:eu-repo/semantics/altIdentifier/hdl/2128/20213 info:eu-repo/semantics/altIdentifier/wos/WOS:000448656800073 https://juser.fz-juelich.de/record/857910 https://juser.fz-juelich.de/search?p=id:%22FZJ-2018-06864%22 |
op_rights |
info:eu-repo/semantics/embargoedAccess |
op_doi |
https://doi.org/10.1029/2018GL079142 |
container_title |
Geophysical Research Letters |
container_volume |
45 |
container_issue |
19 |
container_start_page |
10,682 |
op_container_end_page |
10,690 |
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1766172042669850624 |