Multi-year observations of mesoscale variances of hydroxyl nightglow near the mesopause at Tory and Zvenigorod

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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. .

In: Journal of Atmospheric and Solar-Terrestrial Physics, Vol. 205, 105311, 01.09.2020.

Research output: Contribution to journal › Article › peer-review

Author

Popov, Andrej A. ; Gavrilov, Nikolai M. ; Perminov, Vladimir I. ; Pertsev, Nikolay N. ; Medvedeva, Irina V. . / Multi-year observations of mesoscale variances of hydroxyl nightglow near the mesopause at Tory and Zvenigorod. In: Journal of Atmospheric and Solar-Terrestrial Physics. 2020 ; Vol. 205.

BibTeX

@article{6717dc4a521143a597f06010e6d8190e,

title = "Multi-year observations of mesoscale variances of hydroxyl nightglow near the mesopause at Tory and Zvenigorod",

abstract = "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.",

keywords = "upper atmosphere, hydroxyl airglow, rotational temperature, climatology, seasonal variations, trends, mesoscale variability, internal gravity waves, upper atmosphere, hydroxyl airglow, rotational temperature, climatology, seasonal variations, trends, mesoscale variability, internal gravity waves, Climatology, Mesoscale variability, Internal gravity waves, Seasonal variations, Rotational temperature, Trends, Upper atmosphere, Hydroxyl airglow, MIDDLE ATMOSPHERE, INTENSITY, OH AIRGLOW, SEASONAL-VARIATIONS, CLIMATOLOGY, GRAVITY-WAVE ACTIVITY, REGION, EMISSION, SPECTRA, TEMPERATURE-MEASUREMENTS",

author = "Popov, {Andrej A.} and Gavrilov, {Nikolai M.} and Perminov, {Vladimir I.} and Pertsev, {Nikolay N.} and Medvedeva, {Irina V.}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = sep,

day = "1",

doi = "10.1016/j.jastp.2020.105311",

language = "English",

volume = "205",

journal = "Journal of Atmospheric and Solar-Terrestrial Physics",

issn = "1364-6826",

publisher = "Elsevier",

}

RIS

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.

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