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1. Identity statement
Reference TypeConference Paper (Conference Proceedings)
Sitemtc-m21c.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34R/44D562E
Repositorysid.inpe.br/mtc-m21c/2021/03.25.14.17
Metadata Repositorysid.inpe.br/mtc-m21c/2021/03.25.14.17.08
Metadata Last Update2022:04.03.22.39.45 (UTC) administrator
Secondary KeyINPE--PRE/
Citation KeyGiongoBagWraFigSch:2021:VePrAn
TitleVertical propagation analysis of small scale gravity waves in year 2017 at Comandant Ferraz Artartic station
Year2021
Access Date2024, May 18
Secondary TypePRE CN
2. Context
Author1 Giongo, G. A.
2 Bageston, José Valentin
3 Wrasse, Cristiano Max
4 Figueiredo, Cosme Alexandre Oliveira Barros
5 Schuch, Nelson Jorge
Resume Identifier1
2
3
4
5 8JMKD3MGP5W/3C9JHUD
Group1
2 COESU-CGGO-INPE-MCTI-GOV-BR
3 DICEP-CGCE-INPE-MCTI-GOV-BR
4 DICEP-CGCE-INPE-MCTI-GOV-BR
5 COESU-CGGO-INPE-MCTI-GOV-BR
Affiliation1 Universidade Federal de Santa Maria (UFSM)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 Instituto Nacional de Pesquisas Espaciais (INPE)
4 Instituto Nacional de Pesquisas Espaciais (INPE)
5 Instituto Nacional de Pesquisas Espaciais (INPE)
Author e-Mail Address1
2 jose.bageston@inpe.br
3 cristiano.wrasse@inpe.br
4 anagetinga@hotmail.com
5 nelson.schuch@inpe.br
Conference NameSimpósio Brasileiro de Geofísica Espacial e Aeronomia, 8 (SBGEA)
Conference LocationOnline
Date22-26 mar.
History (UTC)2021-03-25 14:17:08 :: simone -> administrator ::
2022-04-03 22:39:45 :: administrator -> simone :: 2021
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
AbstractThis work presents blocking diagrams analysis for the vertical propagation of small scale gravity waves observed over Commandant Ferraz Antarctic Station during the winter of 2017. The wave blocking diagrams are constructed by using the neutral winds obtained at several distinct atmospheric layers, from troposphere to the upper mesosphere, which absorbs the momentum of the waves when wind speeds are higher than the wave phase speed in the waves propagation direction. The waves were visualized from an all-sky imager, in the airglow hydroxyl near infrared emission (OH-NIR), from ∼700 nm to 900 nm, at altitude near 87 km. The physical parameters of the waves are obtained from applying a twodimensional Fast Fourier Transform (FFT) in a selected region of a given set of images where a wave event is clearly identified. The vertical propagation analysis of the small scale gravity waves is conducted by using a blocking diagram, which is the superposition of the wind components from all atmospheric layers comprising the mesosphere, stratosphere and troposphere. The wind utilized for preparing the blocking diagrams is an average wind calculated with nocturnal wind profiles. This average is taken with only a few nights (where there were observed waves) centered on the new moon day, and such average corresponds to the observed month. The wind database used in the averages was obtained by ERA-5 reanalysis from the ECMWF. In this work it will be presented the blocking diagrams for the months of April, May, June and July in the year 2017. The blocking diagrams well represent the wave filtering, showing the preferential propagation direction of the waves observed in the mesosphere, that is, the waves that reach the mesospheric height propagates in a different horizontal direction from the average wind in all altitudes levels below the observed layer.
AreaCEA
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4. Conditions of access and use
Languageen
User Groupsimone
Visibilityshown
Update Permissionnot transferred
5. Allied materials
Next Higher Units8JMKD3MGPCW/46KTFK8
8JMKD3MGPCW/46KUBT5
Host Collectionurlib.net/www/2017/11.22.19.04
6. Notes
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