Mesospheric front observations by the OH airglow imager carried out at Ferraz Station on King George Island, Antarctic Peninsula, in 2011
The main goals of this work are to characterize and investigate the potential wave sources of four mesospheric fronts identified in the hydroxyl near-infrared (OH-NIR) airglow images, obtained with an all-sky airglow imager installed at Comandante Ferraz Antarctic Station (EACF, as per its Portugues...
Published in: | Annales Geophysicae |
---|---|
Main Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2018
|
Subjects: | |
Online Access: | https://doi.org/10.5194/angeo-36-253-2018 https://doaj.org/article/459baf5626a045a38241a1954ddc6beb |
id |
ftdoajarticles:oai:doaj.org/article:459baf5626a045a38241a1954ddc6beb |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:459baf5626a045a38241a1954ddc6beb 2023-05-15T14:00:06+02:00 Mesospheric front observations by the OH airglow imager carried out at Ferraz Station on King George Island, Antarctic Peninsula, in 2011 G. A. Giongo J. V. Bageston P. P. Batista C. M. Wrasse G. D. Bittencourt I. Paulino N. M. Paes Leme D. C. Fritts D. Janches W. Hocking N. J. Schuch 2018-02-01T00:00:00Z https://doi.org/10.5194/angeo-36-253-2018 https://doaj.org/article/459baf5626a045a38241a1954ddc6beb EN eng Copernicus Publications https://www.ann-geophys.net/36/253/2018/angeo-36-253-2018.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-36-253-2018 0992-7689 1432-0576 https://doaj.org/article/459baf5626a045a38241a1954ddc6beb Annales Geophysicae, Vol 36, Pp 253-264 (2018) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2018 ftdoajarticles https://doi.org/10.5194/angeo-36-253-2018 2022-12-31T10:08:04Z The main goals of this work are to characterize and investigate the potential wave sources of four mesospheric fronts identified in the hydroxyl near-infrared (OH-NIR) airglow images, obtained with an all-sky airglow imager installed at Comandante Ferraz Antarctic Station (EACF, as per its Portuguese acronym) located on King George Island in the Antarctic Peninsula. We identified and analyzed four mesospheric fronts in 2011 over King George Island. In addition, we investigate the atmospheric background environment between 80 and 100 km altitude and discuss the ducts and propagation conditions for these waves. For that, we used wind data obtained from a meteor radar operated at EACF and temperature data obtained from the TIMED/SABER satellite. The vertical wavenumber squared, m 2 , was calculated for each of the four waves. Even though no clearly defined duct (indicated by positive values of m 2 sandwiched between layers above and below with m 2 < 0) was found in any of the events, favorable propagation conditions for horizontal propagation of the fronts were found in three cases. In the fourth case, the wave front did not find any duct support and it appeared to dissipate near the zenith, transferring energy and momentum to the medium and, consequently, accelerating the wind in the wave propagation direction (near to south) above the OH peak (88–92 km). The likely wave sources for these four cases were investigated by using meteorological satellite images and in two cases we could find that strong instabilities were potential sources, i.e., a cyclonic activity and a large convective cloud cell. In the other two cases it was not possible to associate troposphere sources as potential candidates for the generation of such wave fronts observed in the mesosphere and secondary wave sources were attributed to these cases. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula King George Island Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Antarctic Peninsula King George Island Ferraz ENVELOPE(-64.117,-64.117,-65.117,-65.117) Annales Geophysicae 36 1 253 264 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 G. A. Giongo J. V. Bageston P. P. Batista C. M. Wrasse G. D. Bittencourt I. Paulino N. M. Paes Leme D. C. Fritts D. Janches W. Hocking N. J. Schuch Mesospheric front observations by the OH airglow imager carried out at Ferraz Station on King George Island, Antarctic Peninsula, in 2011 |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
The main goals of this work are to characterize and investigate the potential wave sources of four mesospheric fronts identified in the hydroxyl near-infrared (OH-NIR) airglow images, obtained with an all-sky airglow imager installed at Comandante Ferraz Antarctic Station (EACF, as per its Portuguese acronym) located on King George Island in the Antarctic Peninsula. We identified and analyzed four mesospheric fronts in 2011 over King George Island. In addition, we investigate the atmospheric background environment between 80 and 100 km altitude and discuss the ducts and propagation conditions for these waves. For that, we used wind data obtained from a meteor radar operated at EACF and temperature data obtained from the TIMED/SABER satellite. The vertical wavenumber squared, m 2 , was calculated for each of the four waves. Even though no clearly defined duct (indicated by positive values of m 2 sandwiched between layers above and below with m 2 < 0) was found in any of the events, favorable propagation conditions for horizontal propagation of the fronts were found in three cases. In the fourth case, the wave front did not find any duct support and it appeared to dissipate near the zenith, transferring energy and momentum to the medium and, consequently, accelerating the wind in the wave propagation direction (near to south) above the OH peak (88–92 km). The likely wave sources for these four cases were investigated by using meteorological satellite images and in two cases we could find that strong instabilities were potential sources, i.e., a cyclonic activity and a large convective cloud cell. In the other two cases it was not possible to associate troposphere sources as potential candidates for the generation of such wave fronts observed in the mesosphere and secondary wave sources were attributed to these cases. |
format |
Article in Journal/Newspaper |
author |
G. A. Giongo J. V. Bageston P. P. Batista C. M. Wrasse G. D. Bittencourt I. Paulino N. M. Paes Leme D. C. Fritts D. Janches W. Hocking N. J. Schuch |
author_facet |
G. A. Giongo J. V. Bageston P. P. Batista C. M. Wrasse G. D. Bittencourt I. Paulino N. M. Paes Leme D. C. Fritts D. Janches W. Hocking N. J. Schuch |
author_sort |
G. A. Giongo |
title |
Mesospheric front observations by the OH airglow imager carried out at Ferraz Station on King George Island, Antarctic Peninsula, in 2011 |
title_short |
Mesospheric front observations by the OH airglow imager carried out at Ferraz Station on King George Island, Antarctic Peninsula, in 2011 |
title_full |
Mesospheric front observations by the OH airglow imager carried out at Ferraz Station on King George Island, Antarctic Peninsula, in 2011 |
title_fullStr |
Mesospheric front observations by the OH airglow imager carried out at Ferraz Station on King George Island, Antarctic Peninsula, in 2011 |
title_full_unstemmed |
Mesospheric front observations by the OH airglow imager carried out at Ferraz Station on King George Island, Antarctic Peninsula, in 2011 |
title_sort |
mesospheric front observations by the oh airglow imager carried out at ferraz station on king george island, antarctic peninsula, in 2011 |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/angeo-36-253-2018 https://doaj.org/article/459baf5626a045a38241a1954ddc6beb |
long_lat |
ENVELOPE(-64.117,-64.117,-65.117,-65.117) |
geographic |
Antarctic The Antarctic Antarctic Peninsula King George Island Ferraz |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula King George Island Ferraz |
genre |
Antarc* Antarctic Antarctic Peninsula King George Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula King George Island |
op_source |
Annales Geophysicae, Vol 36, Pp 253-264 (2018) |
op_relation |
https://www.ann-geophys.net/36/253/2018/angeo-36-253-2018.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-36-253-2018 0992-7689 1432-0576 https://doaj.org/article/459baf5626a045a38241a1954ddc6beb |
op_doi |
https://doi.org/10.5194/angeo-36-253-2018 |
container_title |
Annales Geophysicae |
container_volume |
36 |
container_issue |
1 |
container_start_page |
253 |
op_container_end_page |
264 |
_version_ |
1766269098126213120 |