Seasonal variation of space–time parameters of internal gravity waves at Kharkiv (49°30′N, 36°51′E)

Oleynikov, A.N.; Sosnovchik, D. M.; Kukush, V. D.; Jacobi, Ch.; Fröhlich, Kristina

doi:10.1016/j.jastp.2007.07.009

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…For all the years of the analyzed period, relative TID variability was shown to exhibit a clear seasonal behavior with maximum in winter, minimum in summer, and intermediate values at equinoxes. Such a behavior agrees closely with the GWs activity at the stratospheric and mesospheric heights (Alexander et al, 2010), the seasonal distribution of GW events in the lower ionosphere (Oleynikov et al, 2007), and the seasonal distribution of wavelike disturbances at the F2 layer heights . The relative TID variability did not show a clear increase with the geomagnetic/solar activity (Ratovsky et al, 2014a).…”

Section: Upper Plotssupporting

confidence: 82%

Meteorological effects of ionospheric disturbances from vertical radio sounding data

Chernigovskaya

Shpynev

Ratovsky

2015

Journal of Atmospheric and Solar-Terrestrial Physics

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Section: Upper Plotssupporting

confidence: 82%

Meteorological effects of ionospheric disturbances from vertical radio sounding data

Chernigovskaya

Shpynev

Ratovsky

2015

Journal of Atmospheric and Solar-Terrestrial Physics

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“…The daytime seasonal behavior of the day‐to‐day variability may differ from those of other midlatitude sites; there are cases of both positive and negative winter‐summer difference according to data presented by Rishbeth and Mendillo [] and Altadill []. Both the daytime and nighttime seasonal patterns of the IGW variability agree closely with the IGW activity at stratospheric and mesospheric heights [ Alexander et al ., ], the seasonal distribution of IGW events in the lower ionosphere [ Oleynikov et al ., ], and the seasonal distribution of wave‐like disturbances at F 2 layer heights [ Medvedev et al ., ].…”

Section: Seasonal Pattern Of Ionospheric Variabilitymentioning

confidence: 99%

Studying atmospheric and ionospheric variabilities from long‐term spectrometric and radio sounding measurements

Медведева

Ratovsky

2015

JGR Space Physics

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We investigated the variability in the neutral upper atmosphere and ionosphere parameters over East Siberia. The analysis is based on 2008–2014 data set of mesopause temperature (Tm) obtained from spectrometric measurements of the OH emission (834.0 nm, band (6–2)) at the Institute of Solar‐Terrestrial Physics Geophysical Observatory (51.8°N, 103.1°E), and the data of F2 peak electron density (NmF2) from Irkutsk DPS‐4 Digisonde (52.3°N, 104.3°E). The seasonal patterns of the NmF2 and Tm variability in different period ranges were analyzed and compared. The period range included day‐to‐day (periods T > 24 h) and tidal (8 h ≤ T ≤ 24 h) variations as well as variations in the internal gravity wave period range (T < 8 h). The comparison revealed both common features and distinctions in the seasonal patterns of the ionospheric and atmospheric variabilities. The main common feature is that the winter variability exceeds the summer one. In both atmospheric and ionospheric day‐to‐day variability seasonal variations, there are maxima in winter months and an additional maximum around the autumn equinox. The main distinction is that the equinox peaks observed in the seasonal variations of the diurnal atmospheric variability are not seen in the ionospheric seasonal pattern. The physical reasons of the obtained features are discussed. The revealed similarities in the seasonal behaviors may indicate that planetary waves propagating from the lower atmosphere layers have a significant impact on the mesopause temperature regime and ionospheric day‐to‐day variations.

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“…While lidar 5 measurements, for example, allow the derivation of vertical wavelengths (see, e.g., Rauthe et al, 2006Rauthe et al, , 2008Mzé et al, 2014), horizontal wavelengths of larger-scale gravity waves can be investigated by meteor radars (Oleynikov et al, 2005(Oleynikov et al, , 2007. Airglow imaging can be used for the analysis of horizontal wavelengths of shorter-scale waves.…”

Section: Introductionmentioning

confidence: 99%

Derivation of horizontal and vertical wavelengths using a scanning OH(3-1) airglow spectrometer

Wüst

Offenwanger

Schmidt

et al. 2017

Preprint

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For the first time, we present an approach to derive zonal, meridional and vertical wavelengths as well as periods of gravity waves based on only one OH* spectrometer addressing one vibrational-rotational transition. Knowledge of these parameters 15 is a precondition for the calculation of further information such as the wave group velocity vector.OH(3-1) spectrometer measurements allow the analysis of gravity wave periods, but spatial information cannot necessarily be deduced. We use a scanning spectrometer and the harmonic analysis to derive horizontal wavelengths at the mesopause above Oberpfaffenhofen (48.09°N, 11.28°E), Germany for 22 nights in 2015. Based on the approximation of the dispersion relation for gravity waves of low and medium frequency and additional horizontal wind information, we calculate vertical 20 wavelengths afterwards. The mesopause wind measurements nearest to Oberpfaffenhofen are conducted at Collm (51.30°N, 13.02°E), Germany, ca. 380 km northeast of Oberfpaffenhofen by a meteor radar.In order to check our results, vertical temperature profiles of TIMED-SABER (Thermosphere Ionosphere Mesosphere Energetics Dynamics, Sounding of the Atmosphere using Broadband Emission Radiometry) overpasses are analysed with respect to the dominating vertical wavelength. 25Atmos. Meas. Tech. Discuss., https://doi

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Seasonal variation of space–time parameters of internal gravity waves at Kharkiv (49°30′N, 36°51′E)

Cited by 5 publications

References 14 publications

Meteorological effects of ionospheric disturbances from vertical radio sounding data

Meteorological effects of ionospheric disturbances from vertical radio sounding data

Studying atmospheric and ionospheric variabilities from long‐term spectrometric and radio sounding measurements

Derivation of horizontal and vertical wavelengths using a scanning OH(3-1) airglow spectrometer

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