Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Multi-year observations of mesoscale variances of hydroxyl nightglow near the mesopause at Tory and Zvenigorod. / Popov, Andrej A.; Gavrilov, Nikolai M.; Perminov, Vladimir I.; Pertsev, Nikolay N.; Medvedeva, Irina V. .
в: Journal of Atmospheric and Solar-Terrestrial Physics, Том 205, 105311, 01.09.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Multi-year observations of mesoscale variances of hydroxyl nightglow near the mesopause at Tory and Zvenigorod
AU - Popov, Andrej A.
AU - Gavrilov, Nikolai M.
AU - Perminov, Vladimir I.
AU - Pertsev, Nikolay N.
AU - Medvedeva, Irina V.
N1 - Publisher Copyright: © 2020 Elsevier Ltd
PY - 2020/9/1
Y1 - 2020/9/1
N2 - Digital difference filters were used for the analysis of data of the spectral observations of the rotational temperature and emission intensity of vibrationally excited hydroxyl (OH*) at altitudes 85–90 km at observatories Zvenigorod (56° N, 37° E) for 2004–2016 years and Tory (52° N, 103° E) for 2012–2017. The monthly-average values and standard deviations of mesoscale perturbations of the OH* emission characteristics with periods 0.8–11 h are obtained. These mesoscale perturbations may reflect internal gravity waves (IGWs) in the mesopause region. To filter out mesoscale perturbations, differences between the sequential values of the OH* emission characteristics, averaged over the intervals by duration from 0.5 h to 2 h, were obtained. The average monthly variances of mesoscale perturbations in the OH* rotational temperature obtained at Tory are larger compared to Zvenigorod ones. Average seasonal changes of relative mesoscale variances demonstrate maxima in winter and in summer, with the summer maximum shifted closer to spring months for the Tory station. The reasons for the differences could be different orography and jet streams in the lower and middle atmosphere, also different spectra of IGW horizontal wavelengths due to different geometry of observations at Tory and Zvenigorod.
AB - Digital difference filters were used for the analysis of data of the spectral observations of the rotational temperature and emission intensity of vibrationally excited hydroxyl (OH*) at altitudes 85–90 km at observatories Zvenigorod (56° N, 37° E) for 2004–2016 years and Tory (52° N, 103° E) for 2012–2017. The monthly-average values and standard deviations of mesoscale perturbations of the OH* emission characteristics with periods 0.8–11 h are obtained. These mesoscale perturbations may reflect internal gravity waves (IGWs) in the mesopause region. To filter out mesoscale perturbations, differences between the sequential values of the OH* emission characteristics, averaged over the intervals by duration from 0.5 h to 2 h, were obtained. The average monthly variances of mesoscale perturbations in the OH* rotational temperature obtained at Tory are larger compared to Zvenigorod ones. Average seasonal changes of relative mesoscale variances demonstrate maxima in winter and in summer, with the summer maximum shifted closer to spring months for the Tory station. The reasons for the differences could be different orography and jet streams in the lower and middle atmosphere, also different spectra of IGW horizontal wavelengths due to different geometry of observations at Tory and Zvenigorod.
KW - upper atmosphere
KW - hydroxyl airglow
KW - rotational temperature
KW - climatology
KW - seasonal variations
KW - trends
KW - mesoscale variability
KW - internal gravity waves
KW - upper atmosphere
KW - hydroxyl airglow
KW - rotational temperature
KW - climatology
KW - seasonal variations
KW - trends
KW - mesoscale variability
KW - internal gravity waves
KW - Climatology
KW - Mesoscale variability
KW - Internal gravity waves
KW - Seasonal variations
KW - Rotational temperature
KW - Trends
KW - Upper atmosphere
KW - Hydroxyl airglow
KW - MIDDLE ATMOSPHERE
KW - INTENSITY
KW - OH AIRGLOW
KW - SEASONAL-VARIATIONS
KW - CLIMATOLOGY
KW - GRAVITY-WAVE ACTIVITY
KW - REGION
KW - EMISSION
KW - SPECTRA
KW - TEMPERATURE-MEASUREMENTS
UR - http://www.scopus.com/inward/record.url?scp=85084465683&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/6912d506-63cd-3137-bb01-733c490b9800/
U2 - 10.1016/j.jastp.2020.105311
DO - 10.1016/j.jastp.2020.105311
M3 - Article
VL - 205
JO - Journal of Atmospheric and Solar-Terrestrial Physics
JF - Journal of Atmospheric and Solar-Terrestrial Physics
SN - 1364-6826
M1 - 105311
ER -
ID: 54264746