Is there an influence of short-term solar activity variations on mesopause region airglow?

A-priori, rapid variations of solar activity that directly impact on the terrestrial environment should be expected to influence airglow brightness in the mesopause region via the photodissociative production of atomic oxygen, as it does on the time scale of the solar cycle. To find out whether this...

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Detalles Bibliográficos
Autores principales: Scheer, J., Reisin, E.R.
Formato: JOUR
Materias:
Airglow
Geomagnetic storms
Mesopause region
Solar activity
Solar flares
Earth atmosphere
Environmental impact
Luminance
Photodissociation
Spectrometers
Temperature measurement
Solar energy
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02731177_v39_n8_p1248_Scheer
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_02731177_v39_n8_p1248_Scheer2023-10-03T15:15:36Z Is there an influence of short-term solar activity variations on mesopause region airglow? Scheer, J. Reisin, E.R. Airglow Geomagnetic storms Mesopause region Solar activity Solar flares Earth atmosphere Environmental impact Luminance Photodissociation Spectrometers Temperature measurement Airglow Geomagnetic storms Mesopause region Solar activity Solar energy A-priori, rapid variations of solar activity that directly impact on the terrestrial environment should be expected to influence airglow brightness in the mesopause region via the photodissociative production of atomic oxygen, as it does on the time scale of the solar cycle. To find out whether this is supported by our midlatitude data, we analyze the strongest geoeffective solar activity events, in times when data from the Argentine airglow spectrometer were obtained. An alternative interaction path involving geomagnetic perturbations mediated by the solar wind can also be expected to affect the mesopause region. Daily mean values of different solar and geomagnetic activity indices, and more than 1400 nights of airglow brightness and rotational temperature measurements (mostly from El Leoncito, 31.8°S) are available for this study. The diagnostic value of this investigation is augmented by using information corresponding to two different nominal altitudes (87 km for the OH(6-2) band, and 95 km for the O2b(0-1) band). Our approach ranks the (solar and airglow) events by their respective strength, which automatically provides emphasis on the more important cases. We conclude that if an airglow response to strong solar events exists, it is only short-lived and should therefore most easily be detectable by daytime observations. On the other hand, we did not find signatures in our airglow data that could convincingly be related to geomagnetic storms. © 2007 COSPAR. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02731177_v39_n8_p1248_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
Geomagnetic storms
Mesopause region
Solar activity
Solar flares
Earth atmosphere
Environmental impact
Luminance
Photodissociation
Spectrometers
Temperature measurement
Airglow
Geomagnetic storms
Mesopause region
Solar activity
Solar energy
spellingShingle Airglow
Geomagnetic storms
Mesopause region
Solar activity
Solar flares
Earth atmosphere
Environmental impact
Luminance
Photodissociation
Spectrometers
Temperature measurement
Airglow
Geomagnetic storms
Mesopause region
Solar activity
Solar energy
Scheer, J.
Reisin, E.R.
Is there an influence of short-term solar activity variations on mesopause region airglow?
topic_facet Airglow
Geomagnetic storms
Mesopause region
Solar activity
Solar flares
Earth atmosphere
Environmental impact
Luminance
Photodissociation
Spectrometers
Temperature measurement
Airglow
Geomagnetic storms
Mesopause region
Solar activity
Solar energy
description A-priori, rapid variations of solar activity that directly impact on the terrestrial environment should be expected to influence airglow brightness in the mesopause region via the photodissociative production of atomic oxygen, as it does on the time scale of the solar cycle. To find out whether this is supported by our midlatitude data, we analyze the strongest geoeffective solar activity events, in times when data from the Argentine airglow spectrometer were obtained. An alternative interaction path involving geomagnetic perturbations mediated by the solar wind can also be expected to affect the mesopause region. Daily mean values of different solar and geomagnetic activity indices, and more than 1400 nights of airglow brightness and rotational temperature measurements (mostly from El Leoncito, 31.8°S) are available for this study. The diagnostic value of this investigation is augmented by using information corresponding to two different nominal altitudes (87 km for the OH(6-2) band, and 95 km for the O2b(0-1) band). Our approach ranks the (solar and airglow) events by their respective strength, which automatically provides emphasis on the more important cases. We conclude that if an airglow response to strong solar events exists, it is only short-lived and should therefore most easily be detectable by daytime observations. On the other hand, we did not find signatures in our airglow data that could convincingly be related to geomagnetic storms. © 2007 COSPAR.
format JOUR
author Scheer, J.
Reisin, E.R.
author_facet Scheer, J.
Reisin, E.R.
author_sort Scheer, J.
title Is there an influence of short-term solar activity variations on mesopause region airglow?
title_short Is there an influence of short-term solar activity variations on mesopause region airglow?
title_full Is there an influence of short-term solar activity variations on mesopause region airglow?
title_fullStr Is there an influence of short-term solar activity variations on mesopause region airglow?
title_full_unstemmed Is there an influence of short-term solar activity variations on mesopause region airglow?
title_sort is there an influence of short-term solar activity variations on mesopause region airglow?
url http://hdl.handle.net/20.500.12110/paper_02731177_v39_n8_p1248_Scheer
work_keys_str_mv AT scheerj isthereaninfluenceofshorttermsolaractivityvariationsonmesopauseregionairglow
AT reisiner isthereaninfluenceofshorttermsolaractivityvariationsonmesopauseregionairglow
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