Interannual dynamics in intensity of mesoscale hydroxyl nightglow variations over Almaty
The method of digital difference filters is applied to the data analysis of SATI observations of hydroxyl nightglow intensity and rotational temperature at altitudes 85–90 km over Almaty (43°03' N, 76°58' E), Kazakhstan, in 2010–2017. We examine seasonal and interannual variations in month...
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Language: | English |
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INFRA-M
2018-06-01
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Series: | Solar-Terrestrial Physics |
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Online Access: | https://naukaru.ru/ru/nauka/article/22249/view |
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author | Popov А.А. Gavrilov N.M. Andreev A.B. Pogoreltsev A.I. |
author_facet | Popov А.А. Gavrilov N.M. Andreev A.B. Pogoreltsev A.I. |
author_sort | Popov А.А. |
collection | DOAJ |
description | The method of digital difference filters is applied to the data analysis of SATI observations of hydroxyl nightglow intensity and rotational temperature at altitudes 85–90 km over Almaty (43°03' N, 76°58' E), Kazakhstan, in 2010–2017. We examine seasonal and interannual variations in monthly average values and standard deviations of variations with periods 0.4–5.4 hrs, which may be associated with internal gravity waves in the mesopause region. The monthly average temperature near the mesopause has a maximum in winter and a minimum in June. The monthly average intensity has an additional maximum in June. Standard deviation of mesoscale rotational temperature variations and characteristics of internal gravity waves are maximum in spring and autumn. The spring maximum of mesoscale OH emission intensity variations is shifted to June. Interannual variations and multi-year trends of OH rotational temperature and emission intensity may differ in detail. This may be connected with seasonal and long-term variations in the complex system of the photochemical processes, which produce the OH nightglow. |
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format | Article |
id | doaj.art-042fbe125c0245439cb86de2cc0d9545 |
institution | Directory Open Access Journal |
issn | 2500-0535 |
language | English |
last_indexed | 2024-12-18T15:03:54Z |
publishDate | 2018-06-01 |
publisher | INFRA-M |
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series | Solar-Terrestrial Physics |
spelling | doaj.art-042fbe125c0245439cb86de2cc0d95452022-12-21T21:03:50ZengINFRA-MSolar-Terrestrial Physics2500-05352018-06-0142636810.12737/stp-42201810Interannual dynamics in intensity of mesoscale hydroxyl nightglow variations over AlmatyPopov А.А.0Gavrilov N.M.1Andreev A.B.2Pogoreltsev A.I.3Saint-Petersburg State University, Saint-Petersburg, RussiaSaint-Petersburg State University, Saint-Petersburg, RussiaInstitute of the Ionosphere, Almaty, KazakhstanSaint-Petersburg State University, Saint-Petersburg, Russia; Russian State Hydro-meteorological University, Saint-Petersburg, RussiaThe method of digital difference filters is applied to the data analysis of SATI observations of hydroxyl nightglow intensity and rotational temperature at altitudes 85–90 km over Almaty (43°03' N, 76°58' E), Kazakhstan, in 2010–2017. We examine seasonal and interannual variations in monthly average values and standard deviations of variations with periods 0.4–5.4 hrs, which may be associated with internal gravity waves in the mesopause region. The monthly average temperature near the mesopause has a maximum in winter and a minimum in June. The monthly average intensity has an additional maximum in June. Standard deviation of mesoscale rotational temperature variations and characteristics of internal gravity waves are maximum in spring and autumn. The spring maximum of mesoscale OH emission intensity variations is shifted to June. Interannual variations and multi-year trends of OH rotational temperature and emission intensity may differ in detail. This may be connected with seasonal and long-term variations in the complex system of the photochemical processes, which produce the OH nightglow.https://naukaru.ru/ru/nauka/article/22249/viewupper atmospherenightglowshydroxylintensityrotational temperatureclimatologyseasonal variationstrendsmesoscale variabilityinternal gravity waves. |
spellingShingle | Popov А.А. Gavrilov N.M. Andreev A.B. Pogoreltsev A.I. Interannual dynamics in intensity of mesoscale hydroxyl nightglow variations over Almaty Solar-Terrestrial Physics upper atmosphere nightglows hydroxyl intensity rotational temperature climatology seasonal variations trends mesoscale variability internal gravity waves. |
title | Interannual dynamics in intensity of mesoscale hydroxyl nightglow variations over Almaty |
title_full | Interannual dynamics in intensity of mesoscale hydroxyl nightglow variations over Almaty |
title_fullStr | Interannual dynamics in intensity of mesoscale hydroxyl nightglow variations over Almaty |
title_full_unstemmed | Interannual dynamics in intensity of mesoscale hydroxyl nightglow variations over Almaty |
title_short | Interannual dynamics in intensity of mesoscale hydroxyl nightglow variations over Almaty |
title_sort | interannual dynamics in intensity of mesoscale hydroxyl nightglow variations over almaty |
topic | upper atmosphere nightglows hydroxyl intensity rotational temperature climatology seasonal variations trends mesoscale variability internal gravity waves. |
url | https://naukaru.ru/ru/nauka/article/22249/view |
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