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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Publicado:	2002
Materias:	Airglow Atmospheric dynamics Day-to-day variations Mesopause region PSMOS airglow diurnal variation gravity wave hydroxyl radical mesopause oxygen Argentina
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v64_n8-11_p1175_Scheer 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	paper:paper_13646826_v64_n8-11_p1175_Scheer
record_format	dspace
spelling	paper:paper_13646826_v64_n8-11_p1175_Scheer2023-06-08T16:11:51Z Most prominent airglow night at El Leoncito 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. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v64_n8-11_p1175_Scheer 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 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.
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
publishDate	2002
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v64_n8-11_p1175_Scheer http://hdl.handle.net/20.500.12110/paper_13646826_v64_n8-11_p1175_Scheer
_version_	1768543718255624192

Most prominent airglow night at El Leoncito

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