The effect of atomic oxygen on the thermal regime of the atmosphere in the field of the mesopause / ატომური ჟანგბადის გავლენა ატმოსფეროს სითბურ რეჟიმზე მეზოპაუზის არეში / Влияние атомарного кислорода на тепловой режим атмосферы в области мезопаузы

Khvostikov, I.A. and ხვოსტიკოვი, ი.ა. and Хвостиков, И.А. (1968) The effect of atomic oxygen on the thermal regime of the atmosphere in the field of the mesopause / ატომური ჟანგბადის გავლენა ატმოსფეროს სითბურ რეჟიმზე მეზოპაუზის არეში / Влияние атомарного кислорода на тепловой режим атмосферы в области мезопаузы. აბასთუმნის ასტროფიზიკური ობსერვატორიის ბიულეტენი / Bulletin of the Abastumani Astrophysical Observatory (36). 93 -111.

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Abstract

Mesopause—one of the boundary layers of the Earth's atmosphere—is at the height of 80—85 km and separates mesosphere from thermosphere. A remarkable peculiarity of the thermal regime of the mesopause-which has not been explained up to now—is an unusually low temperature in summer (up to 130-150 K), by 100 and more lower than that in winter (fig. 1). This paper considers the mechanism of additional cooling of the Earth s upper atmosphere caused by infrared radiation of atomic oxygen (3a and 3b processes). In redistribution of atomic oxygen corresponding to photochemical balance (see Table 2) this cooling is small (Table 3). But it is shown in the work that descending atmospheric currents may increase ( concentration of atomic oxygen at the level of mesopause tens of times (Tables 5, 6). This conclusion is based on the results of solution of the continuity equation (20) for photochemically active atmosphere. Under these conditions the considered mechanism may be the reason of intensive additional cooling of the atmosphere at the level mesopause.

Item Type: Article
Subjects: Q Science > QB Astronomy
Divisions: Institutes > Evgeny Kharadze Abastumani National Astrophysical Observatory
Depositing User: თამარ ჭაღიაშვილი
Date Deposited: 24 Jul 2018 09:52
Last Modified: 24 Jul 2018 09:52
URI: http://eprints.iliauni.edu.ge/id/eprint/8347

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