Most prominent airglow night at El Leoncito

In our data set of presently more than 750 nights of OH and O2 airglow observations at lower mid-latitudes, the night of April 25, 1999 stands out for several reasons: the greatest mean O2 intensity we have ever observed and by far the strongest quasi-monochromatic gravity wave signature in OH inten...

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Detalles Bibliográficos
Autores principales: Scheer, J., Reisin, E.R.
Formato: JOUR
Materias:
Airglow
Atmospheric dynamics
Day-to-day variations
Mesopause region
PSMOS
airglow
diurnal variation
gravity wave
hydroxyl radical
mesopause
oxygen
Argentina
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_13646826_v64_n8-11_p1175_Scheer
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_13646826_v64_n8-11_p1175_Scheer
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spelling todo:paper_13646826_v64_n8-11_p1175_Scheer2023-10-03T16:11:09Z Most prominent airglow night at El Leoncito Scheer, J. Reisin, E.R. Airglow Atmospheric dynamics Day-to-day variations Mesopause region PSMOS airglow diurnal variation gravity wave hydroxyl radical mesopause oxygen Argentina In our data set of presently more than 750 nights of OH and O2 airglow observations at lower mid-latitudes, the night of April 25, 1999 stands out for several reasons: the greatest mean O2 intensity we have ever observed and by far the strongest quasi-monochromatic gravity wave signature in OH intensity (with period of about 38 min), accompanied by a prominent day-to-day variation in O2 intensity, and a strong tidal signature simultaneously present in intensities and temperatures at both emission heights. Whereas gravity wave events like this are relatively rare at our site, the slower variations are obviously regular features, similar to what we have seen on other occasions. The quantitative details of the observed phenomena are analyzed in order to establish possible relationships. We conclude from comparison with similar cases that high nocturnal means are frequently accompanied by strong gravity wave signatures, but not generally by strong tidal activity. Finally, different potential mechanisms, including solitons, are briefly reviewed. © 2002 Elsevier Science Ltd. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_13646826_v64_n8-11_p1175_Scheer
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Airglow
Atmospheric dynamics
Day-to-day variations
Mesopause region
PSMOS
airglow
diurnal variation
gravity wave
hydroxyl radical
mesopause
oxygen
Argentina
spellingShingle Airglow
Atmospheric dynamics
Day-to-day variations
Mesopause region
PSMOS
airglow
diurnal variation
gravity wave
hydroxyl radical
mesopause
oxygen
Argentina
Scheer, J.
Reisin, E.R.
Most prominent airglow night at El Leoncito
topic_facet Airglow
Atmospheric dynamics
Day-to-day variations
Mesopause region
PSMOS
airglow
diurnal variation
gravity wave
hydroxyl radical
mesopause
oxygen
Argentina
description In our data set of presently more than 750 nights of OH and O2 airglow observations at lower mid-latitudes, the night of April 25, 1999 stands out for several reasons: the greatest mean O2 intensity we have ever observed and by far the strongest quasi-monochromatic gravity wave signature in OH intensity (with period of about 38 min), accompanied by a prominent day-to-day variation in O2 intensity, and a strong tidal signature simultaneously present in intensities and temperatures at both emission heights. Whereas gravity wave events like this are relatively rare at our site, the slower variations are obviously regular features, similar to what we have seen on other occasions. The quantitative details of the observed phenomena are analyzed in order to establish possible relationships. We conclude from comparison with similar cases that high nocturnal means are frequently accompanied by strong gravity wave signatures, but not generally by strong tidal activity. Finally, different potential mechanisms, including solitons, are briefly reviewed. © 2002 Elsevier Science Ltd. All rights reserved.
format JOUR
author Scheer, J.
Reisin, E.R.
author_facet Scheer, J.
Reisin, E.R.
author_sort Scheer, J.
title Most prominent airglow night at El Leoncito
title_short Most prominent airglow night at El Leoncito
title_full Most prominent airglow night at El Leoncito
title_fullStr Most prominent airglow night at El Leoncito
title_full_unstemmed Most prominent airglow night at El Leoncito
title_sort most prominent airglow night at el leoncito
url http://hdl.handle.net/20.500.12110/paper_13646826_v64_n8-11_p1175_Scheer
work_keys_str_mv AT scheerj mostprominentairglownightatelleoncito
AT reisiner mostprominentairglownightatelleoncito
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