Observation of mesospheric gravity waves at Comandante Ferraz Antarctica Station (62° S)
An airglow all-sky imager was operated at Comandante Ferraz Antarctica Station (62.1° S, 58.4° W), between April and October of 2007. Mesospheric gravity waves were observed using the OH airglow layer during 43 nights with good weather conditions. The waves presented horizontal wavelengths between 1...
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ftcopernicus:oai:publications.copernicus.org:angeo36849 2023-05-15T13:36:36+02:00 Observation of mesospheric gravity waves at Comandante Ferraz Antarctica Station (62° S) Bageston, J. V. Wrasse, C. M. Gobbi, D. Takahashi, H. Souza, P. B. 2018-09-27 application/pdf https://doi.org/10.5194/angeo-27-2593-2009 https://angeo.copernicus.org/articles/27/2593/2009/ eng eng doi:10.5194/angeo-27-2593-2009 https://angeo.copernicus.org/articles/27/2593/2009/ eISSN: 1432-0576 Text 2018 ftcopernicus https://doi.org/10.5194/angeo-27-2593-2009 2020-07-20T16:26:38Z An airglow all-sky imager was operated at Comandante Ferraz Antarctica Station (62.1° S, 58.4° W), between April and October of 2007. Mesospheric gravity waves were observed using the OH airglow layer during 43 nights with good weather conditions. The waves presented horizontal wavelengths between 10 and 60 km and observed periods mainly distributed between 5 and 20 min. The observed phase speeds range between 5 m/s and 115 m/s; the majority of the wave velocities were between 10 and 60 m/s. The waves showed a preferential propagation direction towards the southwest in winter (May to July), while during spring (August to October) there was an anisotropy with a preferential propagation direction towards the northwest. Unusual mesospheric fronts were also observed. The most probable wave source could be associated to orographic forcing, cold fronts or strong cyclonic activity in the Antarctica Peninsula. Text Antarc* Antarctica Copernicus Publications: E-Journals Ferraz ENVELOPE(-64.117,-64.117,-65.117,-65.117) Annales Geophysicae 27 6 2593 2598 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
An airglow all-sky imager was operated at Comandante Ferraz Antarctica Station (62.1° S, 58.4° W), between April and October of 2007. Mesospheric gravity waves were observed using the OH airglow layer during 43 nights with good weather conditions. The waves presented horizontal wavelengths between 10 and 60 km and observed periods mainly distributed between 5 and 20 min. The observed phase speeds range between 5 m/s and 115 m/s; the majority of the wave velocities were between 10 and 60 m/s. The waves showed a preferential propagation direction towards the southwest in winter (May to July), while during spring (August to October) there was an anisotropy with a preferential propagation direction towards the northwest. Unusual mesospheric fronts were also observed. The most probable wave source could be associated to orographic forcing, cold fronts or strong cyclonic activity in the Antarctica Peninsula. |
format |
Text |
author |
Bageston, J. V. Wrasse, C. M. Gobbi, D. Takahashi, H. Souza, P. B. |
spellingShingle |
Bageston, J. V. Wrasse, C. M. Gobbi, D. Takahashi, H. Souza, P. B. Observation of mesospheric gravity waves at Comandante Ferraz Antarctica Station (62° S) |
author_facet |
Bageston, J. V. Wrasse, C. M. Gobbi, D. Takahashi, H. Souza, P. B. |
author_sort |
Bageston, J. V. |
title |
Observation of mesospheric gravity waves at Comandante Ferraz Antarctica Station (62° S) |
title_short |
Observation of mesospheric gravity waves at Comandante Ferraz Antarctica Station (62° S) |
title_full |
Observation of mesospheric gravity waves at Comandante Ferraz Antarctica Station (62° S) |
title_fullStr |
Observation of mesospheric gravity waves at Comandante Ferraz Antarctica Station (62° S) |
title_full_unstemmed |
Observation of mesospheric gravity waves at Comandante Ferraz Antarctica Station (62° S) |
title_sort |
observation of mesospheric gravity waves at comandante ferraz antarctica station (62° s) |
publishDate |
2018 |
url |
https://doi.org/10.5194/angeo-27-2593-2009 https://angeo.copernicus.org/articles/27/2593/2009/ |
long_lat |
ENVELOPE(-64.117,-64.117,-65.117,-65.117) |
geographic |
Ferraz |
geographic_facet |
Ferraz |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
eISSN: 1432-0576 |
op_relation |
doi:10.5194/angeo-27-2593-2009 https://angeo.copernicus.org/articles/27/2593/2009/ |
op_doi |
https://doi.org/10.5194/angeo-27-2593-2009 |
container_title |
Annales Geophysicae |
container_volume |
27 |
container_issue |
6 |
container_start_page |
2593 |
op_container_end_page |
2598 |
_version_ |
1766081438256463872 |