Recent progress in mesospheric gravity wave studies using nigthglow imaging system
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Geofísica (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2007000600007 |
Resumo: | A variety of optical remote sensing techniques have now revealed a rich spectrum of wave activity in the upper atmosphere. Many of these perturbations, with periodicities ranging from ~ 5 min to many hours and horizontal scales of a few tens of km to several thousands km, are due to freely propagating atmospheric gravity waves and forced tidal oscillations. Passive optical observations of the spatial and temporal characteristics of these waves in the mesosphere and lower thermosphere (MLT) region ( ~ 80-100 km) are facilitated by several naturally occurring, vertically distinct nightglow layers. This paper describes the use of state-of-the-art ground-based CCD imaging techniques to detect these waves in intensity and temperature. All-sky (180º) image measurements are used to illustrate the characteristics of small-scale, short period ( < 1 hour) waves and to investigate their seasonal propagation and momentum impact on the MLT region. These results are then contrasted with measurements of mesospheric temperature made using a new temperature mapping imaging system capable of determining induced temperature amplitudes of a large range of wave motions and investigating night-to-night and seasonal variability in mesospheric temperature. |
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Recent progress in mesospheric gravity wave studies using nigthglow imaging systemgravity wavesmesospheric dynamicsairglow imagingseasonal variabilityA variety of optical remote sensing techniques have now revealed a rich spectrum of wave activity in the upper atmosphere. Many of these perturbations, with periodicities ranging from ~ 5 min to many hours and horizontal scales of a few tens of km to several thousands km, are due to freely propagating atmospheric gravity waves and forced tidal oscillations. Passive optical observations of the spatial and temporal characteristics of these waves in the mesosphere and lower thermosphere (MLT) region ( ~ 80-100 km) are facilitated by several naturally occurring, vertically distinct nightglow layers. This paper describes the use of state-of-the-art ground-based CCD imaging techniques to detect these waves in intensity and temperature. All-sky (180º) image measurements are used to illustrate the characteristics of small-scale, short period ( < 1 hour) waves and to investigate their seasonal propagation and momentum impact on the MLT region. These results are then contrasted with measurements of mesospheric temperature made using a new temperature mapping imaging system capable of determining induced temperature amplitudes of a large range of wave motions and investigating night-to-night and seasonal variability in mesospheric temperature.Sociedade Brasileira de Geofísica2007-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2007000600007Revista Brasileira de Geofísica v.25 suppl.2 2007reponame:Revista Brasileira de Geofísica (Online)instname:Sociedade Brasileira de Geofísica (SBG)instacron:SBG10.1590/S0102-261X2007000600007info:eu-repo/semantics/openAccessTaylor,Michael J.Pendleton Jr,William R.Pautet,Pierre-DominiqueZhao,YuchengOlsen,ChrisBabu,Hema Karnam SurendraMedeiros,Amauri F.Takahashi,Hisaoeng2007-11-22T00:00:00Zoai:scielo:S0102-261X2007000600007Revistahttp://www.scielo.br/rbgONGhttps://old.scielo.br/oai/scielo-oai.php||sbgf@sbgf.org.br1809-45110102-261Xopendoar:2007-11-22T00:00Revista Brasileira de Geofísica (Online) - Sociedade Brasileira de Geofísica (SBG)false |
dc.title.none.fl_str_mv |
Recent progress in mesospheric gravity wave studies using nigthglow imaging system |
title |
Recent progress in mesospheric gravity wave studies using nigthglow imaging system |
spellingShingle |
Recent progress in mesospheric gravity wave studies using nigthglow imaging system Taylor,Michael J. gravity waves mesospheric dynamics airglow imaging seasonal variability |
title_short |
Recent progress in mesospheric gravity wave studies using nigthglow imaging system |
title_full |
Recent progress in mesospheric gravity wave studies using nigthglow imaging system |
title_fullStr |
Recent progress in mesospheric gravity wave studies using nigthglow imaging system |
title_full_unstemmed |
Recent progress in mesospheric gravity wave studies using nigthglow imaging system |
title_sort |
Recent progress in mesospheric gravity wave studies using nigthglow imaging system |
author |
Taylor,Michael J. |
author_facet |
Taylor,Michael J. Pendleton Jr,William R. Pautet,Pierre-Dominique Zhao,Yucheng Olsen,Chris Babu,Hema Karnam Surendra Medeiros,Amauri F. Takahashi,Hisao |
author_role |
author |
author2 |
Pendleton Jr,William R. Pautet,Pierre-Dominique Zhao,Yucheng Olsen,Chris Babu,Hema Karnam Surendra Medeiros,Amauri F. Takahashi,Hisao |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Taylor,Michael J. Pendleton Jr,William R. Pautet,Pierre-Dominique Zhao,Yucheng Olsen,Chris Babu,Hema Karnam Surendra Medeiros,Amauri F. Takahashi,Hisao |
dc.subject.por.fl_str_mv |
gravity waves mesospheric dynamics airglow imaging seasonal variability |
topic |
gravity waves mesospheric dynamics airglow imaging seasonal variability |
description |
A variety of optical remote sensing techniques have now revealed a rich spectrum of wave activity in the upper atmosphere. Many of these perturbations, with periodicities ranging from ~ 5 min to many hours and horizontal scales of a few tens of km to several thousands km, are due to freely propagating atmospheric gravity waves and forced tidal oscillations. Passive optical observations of the spatial and temporal characteristics of these waves in the mesosphere and lower thermosphere (MLT) region ( ~ 80-100 km) are facilitated by several naturally occurring, vertically distinct nightglow layers. This paper describes the use of state-of-the-art ground-based CCD imaging techniques to detect these waves in intensity and temperature. All-sky (180º) image measurements are used to illustrate the characteristics of small-scale, short period ( < 1 hour) waves and to investigate their seasonal propagation and momentum impact on the MLT region. These results are then contrasted with measurements of mesospheric temperature made using a new temperature mapping imaging system capable of determining induced temperature amplitudes of a large range of wave motions and investigating night-to-night and seasonal variability in mesospheric temperature. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2007000600007 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2007000600007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0102-261X2007000600007 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Geofísica |
publisher.none.fl_str_mv |
Sociedade Brasileira de Geofísica |
dc.source.none.fl_str_mv |
Revista Brasileira de Geofísica v.25 suppl.2 2007 reponame:Revista Brasileira de Geofísica (Online) instname:Sociedade Brasileira de Geofísica (SBG) instacron:SBG |
instname_str |
Sociedade Brasileira de Geofísica (SBG) |
instacron_str |
SBG |
institution |
SBG |
reponame_str |
Revista Brasileira de Geofísica (Online) |
collection |
Revista Brasileira de Geofísica (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Geofísica (Online) - Sociedade Brasileira de Geofísica (SBG) |
repository.mail.fl_str_mv |
||sbgf@sbgf.org.br |
_version_ |
1754820936864890880 |