Irkutsk, Russian Federation
Irkutsk, Russian Federation
Irkutsk, Russian Federation
Irkutsk, Russian Federation
Obukhov Institute of Atmospheric Physics RAS
Irkutsk, Russian Federation
Irkutsk, Russian Federation
Irkutsk, Russian Federation
UDK 55 Геология. Геологические и геофизические науки
UDK 68 Различные отрасли промышленности и ремесла
We describe the Fabry–Perot interferometer designed to study Earth’s upper atmosphere. We propose a modification of the existing data processing method for determining the Doppler shift and Doppler widening and also for separating the observed line intensity and the background intensity. The temperature and wind velocity derived from these parameters are compared with physical characteristics obtained from modeling (NRLMSISE-00, HWM14). We demonstrate that the temperature is determined from the oxygen 630 nm line irrespective of the hydroxyl signal existing in interference patterns. We show that the interferometer can obtain temperature from the oxygen 557.7 nm line in case of additional calibration of the device. The observed wind velocity mainly agrees with model data. Night variations in the red and green oxygen lines quite well coincide with those in intensities obtained by de-vices installed nearby the interferometer.
Fabry–Perot interferometry, Earth’s atmosphere airglow, upper atmosphere wind, upper atmosphere temperature
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