The paper deals with long-term means of 557.7 nm atomic oxygen emission intensity [OI], air temperature and wind speed within the mesopause over the southern regions of East Siberia. Data on temperature and emission parameters were obtained from SABER/TIMED radiometer, KEO Scientific «Arinae» Fabry–Pérot interferometer, SATI spectrometer and NRLMSIS model over the Tory Geophysical Observatory (52° N, 103° E). Annual variations of 557.7 nm emission intensity and temperature obtained in observations differs from model approximations. Potential reasons for the revealed discrepancies are discussed.
We present the results of studying variations in the concentrations of the CO and H2O atmospheric constituents over the Baikal Natural Territory from the long-term (2010–2021) data of the MLS Aura satellite measurements. The data were analyzed at the stratospheric heights for pressure levels within 215–10 hPa (~11–32 km) for the locations of Khorinsk (52.17° N, 109.77° E) and Zhigalovo (54.81° N, 105.15° E). We obtained averaged seasonal variations in the concentrations of the analyzed components for each pressure level under day and night conditions for the 2010-2020 period. Comparison of the obtained results with the behavior of the concentrations of atmospheric constituents in 2021 revealed an increased CO concentration for Khorinsk in July–August 2021, when increased smoke from forest fires was observed in the analyzed region.
The work is devoted to the comparison of the night airglow intensity of atomic oxygen in the mesopause region, obtained by satellite and ground-based methods. Satellite data used in this work were obtained using a SABER limb radiometer operating on the TIMED platform, ground monitoring data were obtained using a Fabry-Perot KEO Scientific “Arinae” interferometer, adapted for aeronomic research. The profile of the natural green glow intensity of the upper atmosphere is calculated on the basis of the profile of the atomic oxygen concentration. The chemical composition and air temperature data, at mesopause region, obtained by the SABER are used to calculate the profiles. The nighttime emission intensity of 557.7 nm, obtained in this way from satellite data, is in good agreement with the results of ground-based observations.
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