Secondary Gravity Waves From the Stratospheric Polar Vortex Over ALOMAR Observatory on 12–14 January 2016: Observations and Modeling
We analyze the gravity waves (GWs) observed by a Rayleigh lidar at the Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR) (16.08°E, 69.38°N) in Norway at z ∼ 20–85 km on 12–14 January 2016. These GWs propagate upward and downward away from zknee = 57 and 64 km at a horizontally-displac...
Published in: | Journal of Geophysical Research: Atmospheres |
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ftfzjuelichnvdb:oai:juser.fz-juelich.de:943409 2023-10-29T02:34:41+01:00 Secondary Gravity Waves From the Stratospheric Polar Vortex Over ALOMAR Observatory on 12–14 January 2016: Observations and Modeling Vadas, Sharon L. Becker, Erich Bossert, Katrina Baumgarten, Gerd Hoffmann, Lars Harvey, V. Lynn DE 2023 https://juser.fz-juelich.de/record/943409 https://juser.fz-juelich.de/search?p=id:%22FZJ-2023-00995%22 eng eng Wiley info:eu-repo/semantics/altIdentifier/doi/10.1029/2022JD036985 info:eu-repo/semantics/altIdentifier/issn/2169-897X info:eu-repo/semantics/altIdentifier/hdl/2128/33798 info:eu-repo/semantics/altIdentifier/wos/WOS:000938835500012 info:eu-repo/semantics/altIdentifier/issn/0148-0227 info:eu-repo/semantics/altIdentifier/issn/2169-8996 info:eu-repo/semantics/altIdentifier/issn/2156-2202 https://juser.fz-juelich.de/record/943409 https://juser.fz-juelich.de/search?p=id:%22FZJ-2023-00995%22 info:eu-repo/semantics/openAccess JGR / Atmospheres 128(2), e2022JD036985 (2023). doi:10.1029/2022JD036985 info:eu-repo/classification/ddc/550 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftfzjuelichnvdb https://doi.org/10.1029/2022JD036985 2023-10-01T22:17:54Z We analyze the gravity waves (GWs) observed by a Rayleigh lidar at the Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR) (16.08°E, 69.38°N) in Norway at z ∼ 20–85 km on 12–14 January 2016. These GWs propagate upward and downward away from zknee = 57 and 64 km at a horizontally-displaced location with periods τr ∼ 5–10 hr and vertical wavelengths λz ∼ 9–20 km. Because the hodographs are distorted, we introduce an alternative method to determine the GW parameters. We find that these GWs are medium to large-scale, and propagate north/northwestward with intrinsic horizontal phase speeds of ∼35–65 m/s. Since the GW parameters are similar above and below zknee, these are secondary GWs created by local body forces (LBFs) south/southeast of ALOMAR. We use the nudged HIAMCM (HIgh Altitude Mechanistic general Circulation Model) to model these events. Remarkably, the model reproduces similar GW structures over ALOMAR, with zknee = 58 and 66 km. The event #1 GWs are created by a LBF at ∼35°E, ∼60°N, and z ∼ 58 km. This LBF is created by the breaking and dissipation of primary GWs generated and amplified by the imbalance of the polar night jet below the wind maximum; the primary GWs for this event are created at z ∼ 25–35 km at 49–53°N. We also find that the HIAMCM GWs agree well with those observed by the Atmospheric InfraRed Sounder (AIRS) satellite, and that those AIRS GWs south and north of ∼50°N over Europe are mainly mountain waves and GWs from the polar vortex, respectively. Article in Journal/Newspaper Arctic polar night Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) Journal of Geophysical Research: Atmospheres 128 2 |
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Open Polar |
collection |
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 Vadas, Sharon L. Becker, Erich Bossert, Katrina Baumgarten, Gerd Hoffmann, Lars Harvey, V. Lynn Secondary Gravity Waves From the Stratospheric Polar Vortex Over ALOMAR Observatory on 12–14 January 2016: Observations and Modeling |
topic_facet |
info:eu-repo/classification/ddc/550 |
description |
We analyze the gravity waves (GWs) observed by a Rayleigh lidar at the Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR) (16.08°E, 69.38°N) in Norway at z ∼ 20–85 km on 12–14 January 2016. These GWs propagate upward and downward away from zknee = 57 and 64 km at a horizontally-displaced location with periods τr ∼ 5–10 hr and vertical wavelengths λz ∼ 9–20 km. Because the hodographs are distorted, we introduce an alternative method to determine the GW parameters. We find that these GWs are medium to large-scale, and propagate north/northwestward with intrinsic horizontal phase speeds of ∼35–65 m/s. Since the GW parameters are similar above and below zknee, these are secondary GWs created by local body forces (LBFs) south/southeast of ALOMAR. We use the nudged HIAMCM (HIgh Altitude Mechanistic general Circulation Model) to model these events. Remarkably, the model reproduces similar GW structures over ALOMAR, with zknee = 58 and 66 km. The event #1 GWs are created by a LBF at ∼35°E, ∼60°N, and z ∼ 58 km. This LBF is created by the breaking and dissipation of primary GWs generated and amplified by the imbalance of the polar night jet below the wind maximum; the primary GWs for this event are created at z ∼ 25–35 km at 49–53°N. We also find that the HIAMCM GWs agree well with those observed by the Atmospheric InfraRed Sounder (AIRS) satellite, and that those AIRS GWs south and north of ∼50°N over Europe are mainly mountain waves and GWs from the polar vortex, respectively. |
format |
Article in Journal/Newspaper |
author |
Vadas, Sharon L. Becker, Erich Bossert, Katrina Baumgarten, Gerd Hoffmann, Lars Harvey, V. Lynn |
author_facet |
Vadas, Sharon L. Becker, Erich Bossert, Katrina Baumgarten, Gerd Hoffmann, Lars Harvey, V. Lynn |
author_sort |
Vadas, Sharon L. |
title |
Secondary Gravity Waves From the Stratospheric Polar Vortex Over ALOMAR Observatory on 12–14 January 2016: Observations and Modeling |
title_short |
Secondary Gravity Waves From the Stratospheric Polar Vortex Over ALOMAR Observatory on 12–14 January 2016: Observations and Modeling |
title_full |
Secondary Gravity Waves From the Stratospheric Polar Vortex Over ALOMAR Observatory on 12–14 January 2016: Observations and Modeling |
title_fullStr |
Secondary Gravity Waves From the Stratospheric Polar Vortex Over ALOMAR Observatory on 12–14 January 2016: Observations and Modeling |
title_full_unstemmed |
Secondary Gravity Waves From the Stratospheric Polar Vortex Over ALOMAR Observatory on 12–14 January 2016: Observations and Modeling |
title_sort |
secondary gravity waves from the stratospheric polar vortex over alomar observatory on 12–14 january 2016: observations and modeling |
publisher |
Wiley |
publishDate |
2023 |
url |
https://juser.fz-juelich.de/record/943409 https://juser.fz-juelich.de/search?p=id:%22FZJ-2023-00995%22 |
op_coverage |
DE |
genre |
Arctic polar night |
genre_facet |
Arctic polar night |
op_source |
JGR / Atmospheres 128(2), e2022JD036985 (2023). doi:10.1029/2022JD036985 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2022JD036985 info:eu-repo/semantics/altIdentifier/issn/2169-897X info:eu-repo/semantics/altIdentifier/hdl/2128/33798 info:eu-repo/semantics/altIdentifier/wos/WOS:000938835500012 info:eu-repo/semantics/altIdentifier/issn/0148-0227 info:eu-repo/semantics/altIdentifier/issn/2169-8996 info:eu-repo/semantics/altIdentifier/issn/2156-2202 https://juser.fz-juelich.de/record/943409 https://juser.fz-juelich.de/search?p=id:%22FZJ-2023-00995%22 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2022JD036985 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
128 |
container_issue |
2 |
_version_ |
1781057352282144768 |