Long-term changes in the intensity of mesoscale variations in hydroxyl rotational temperature near the mesopause as indicators of dynamic processes in the underlying atmosphere

A.A. Popov, N.M. Gavrilov, V.I. Perminov, N.N. Pertsev, I.V. Medvedeva

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Abstract

We used digital difference filters for the analysis of the spectral observations of the rotational temperature of vibrationally excited hydroxyl at altitudes 85-90 km at the Zvenigorod scientific station of IAP RAS (56° N, 37° E) in 2004-2016 and at the Geophysical observatory of ISTP SB RAS (52° N, 103° E, Tory) in 2012-2017. Seasonal and interannual changes in the mean temperature and intensity of variations with periods 0.4-5.4 h are studied. These changes may be associated with the propagation of internal gravity waves (IGWs) in the mesopause region. To filter out mesoscale variations, differences between the sequential values of the OH temperature, averaged over the intervals by duration from 10 min to 2 h, were obtained.
Original languageEnglish
Title of host publicationVarSITI Completion General Symposium, SCOSTEP
Subtitle of host publicationBook of abstracts
Place of PublicationSofia
Pages31-32
StatePublished - 2019
EventVarSITI Completion General Symposium - Sofia, Bulgaria
Duration: 10 Jun 201914 Jun 2019

Conference

ConferenceVarSITI Completion General Symposium
CountryBulgaria
CitySofia
Period10/06/1914/06/19

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