Case study of stratospheric gravity waves of convective origin over Arctic Scandinavia - VHF radar observations and numerical modelling
International audience Orography is a well-known source of gravity and inertia-gravity waves in the atmosphere. Other sources, such as convection, are also known to be potentially important but the large amplitude of orographic waves over Scandinavia has generally precluded the possibility to study...
Published in: | Annales Geophysicae |
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Online Access: | https://hal.archives-ouvertes.fr/hal-00961368 https://hal.archives-ouvertes.fr/hal-00961368/document https://hal.archives-ouvertes.fr/hal-00961368/file/Case_study_stratospheric_gravity_waves_convective_origin.pdf https://doi.org/10.5194/angeo-31-239-2013 |
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ftccsdartic:oai:HAL:hal-00961368v1 2023-05-15T14:59:14+02:00 Case study of stratospheric gravity waves of convective origin over Arctic Scandinavia - VHF radar observations and numerical modelling Réchou, Anne Arnault, J. Dalin, P. Kirkwood, S. Laboratoire de l'Atmosphère et des Cyclones (LACy) Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) Swedish Institute of Space Physics Kiruna (IRF) 2013 https://hal.archives-ouvertes.fr/hal-00961368 https://hal.archives-ouvertes.fr/hal-00961368/document https://hal.archives-ouvertes.fr/hal-00961368/file/Case_study_stratospheric_gravity_waves_convective_origin.pdf https://doi.org/10.5194/angeo-31-239-2013 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/angeo-31-239-2013 hal-00961368 https://hal.archives-ouvertes.fr/hal-00961368 https://hal.archives-ouvertes.fr/hal-00961368/document https://hal.archives-ouvertes.fr/hal-00961368/file/Case_study_stratospheric_gravity_waves_convective_origin.pdf doi:10.5194/angeo-31-239-2013 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.archives-ouvertes.fr/hal-00961368 Annales Geophysicae, European Geosciences Union, 2013, 31 (2), pp.239--250. ⟨10.5194/angeo-31-239-2013⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2013 ftccsdartic https://doi.org/10.5194/angeo-31-239-2013 2021-10-24T06:31:07Z International audience Orography is a well-known source of gravity and inertia-gravity waves in the atmosphere. Other sources, such as convection, are also known to be potentially important but the large amplitude of orographic waves over Scandinavia has generally precluded the possibility to study such other sources experimentally in this region. In order to better understand the origin of stratospheric gravity waves observed by the VHF radar ESRAD (Esrange MST radar) over Kiruna, in Arctic Sweden (67.88◦N, 21.10◦E), observations have been compared to simulations made using the Weather Research and Forecasting model (WRF) with and without the effects of orography and clouds. This case study concerns gravity waves observed from 00:00 UTC on 18 February to 12:00 UTC on 20 February 2007. We focus on the wave signatures in the static stability field and vertical wind deduced from the simulations and from the observations as these are the parameters which are provided by the observations with the best height coverage. As is common at this site, orographic gravity waves were produced over the Scan-dinavian mountains and observed by the radar. However, at the same time, southward propagation of fronts in the Barents Sea created shorteriod waves which propagated into the stratosphere and were transported, embedded in the cyclonic winds, over the radar site. Article in Journal/Newspaper Arctic Barents Sea Kiruna Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Barents Sea Esrange ENVELOPE(21.117,21.117,67.883,67.883) Kiruna Annales Geophysicae 31 2 239 250 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Réchou, Anne Arnault, J. Dalin, P. Kirkwood, S. Case study of stratospheric gravity waves of convective origin over Arctic Scandinavia - VHF radar observations and numerical modelling |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience Orography is a well-known source of gravity and inertia-gravity waves in the atmosphere. Other sources, such as convection, are also known to be potentially important but the large amplitude of orographic waves over Scandinavia has generally precluded the possibility to study such other sources experimentally in this region. In order to better understand the origin of stratospheric gravity waves observed by the VHF radar ESRAD (Esrange MST radar) over Kiruna, in Arctic Sweden (67.88◦N, 21.10◦E), observations have been compared to simulations made using the Weather Research and Forecasting model (WRF) with and without the effects of orography and clouds. This case study concerns gravity waves observed from 00:00 UTC on 18 February to 12:00 UTC on 20 February 2007. We focus on the wave signatures in the static stability field and vertical wind deduced from the simulations and from the observations as these are the parameters which are provided by the observations with the best height coverage. As is common at this site, orographic gravity waves were produced over the Scan-dinavian mountains and observed by the radar. However, at the same time, southward propagation of fronts in the Barents Sea created shorteriod waves which propagated into the stratosphere and were transported, embedded in the cyclonic winds, over the radar site. |
author2 |
Laboratoire de l'Atmosphère et des Cyclones (LACy) Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) Swedish Institute of Space Physics Kiruna (IRF) |
format |
Article in Journal/Newspaper |
author |
Réchou, Anne Arnault, J. Dalin, P. Kirkwood, S. |
author_facet |
Réchou, Anne Arnault, J. Dalin, P. Kirkwood, S. |
author_sort |
Réchou, Anne |
title |
Case study of stratospheric gravity waves of convective origin over Arctic Scandinavia - VHF radar observations and numerical modelling |
title_short |
Case study of stratospheric gravity waves of convective origin over Arctic Scandinavia - VHF radar observations and numerical modelling |
title_full |
Case study of stratospheric gravity waves of convective origin over Arctic Scandinavia - VHF radar observations and numerical modelling |
title_fullStr |
Case study of stratospheric gravity waves of convective origin over Arctic Scandinavia - VHF radar observations and numerical modelling |
title_full_unstemmed |
Case study of stratospheric gravity waves of convective origin over Arctic Scandinavia - VHF radar observations and numerical modelling |
title_sort |
case study of stratospheric gravity waves of convective origin over arctic scandinavia - vhf radar observations and numerical modelling |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.archives-ouvertes.fr/hal-00961368 https://hal.archives-ouvertes.fr/hal-00961368/document https://hal.archives-ouvertes.fr/hal-00961368/file/Case_study_stratospheric_gravity_waves_convective_origin.pdf https://doi.org/10.5194/angeo-31-239-2013 |
long_lat |
ENVELOPE(21.117,21.117,67.883,67.883) |
geographic |
Arctic Barents Sea Esrange Kiruna |
geographic_facet |
Arctic Barents Sea Esrange Kiruna |
genre |
Arctic Barents Sea Kiruna |
genre_facet |
Arctic Barents Sea Kiruna |
op_source |
ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.archives-ouvertes.fr/hal-00961368 Annales Geophysicae, European Geosciences Union, 2013, 31 (2), pp.239--250. ⟨10.5194/angeo-31-239-2013⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/angeo-31-239-2013 hal-00961368 https://hal.archives-ouvertes.fr/hal-00961368 https://hal.archives-ouvertes.fr/hal-00961368/document https://hal.archives-ouvertes.fr/hal-00961368/file/Case_study_stratospheric_gravity_waves_convective_origin.pdf doi:10.5194/angeo-31-239-2013 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/angeo-31-239-2013 |
container_title |
Annales Geophysicae |
container_volume |
31 |
container_issue |
2 |
container_start_page |
239 |
op_container_end_page |
250 |
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1766331350042804224 |