Variations of night measurements of the upper Earth's atmosphere temperature over the course of a year

1Kozak, LV, 1Salivonov, AI
1Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
Kosm. nauka tehnol. 2008, 14 ;(2):77-83
https://doi.org/10.15407/knit2008.02.077
Publication Language: Russian
Abstract: 
The temperature values for the upper Earth's atmosphere during 1992 and 1993 obtained with the device WINDII installed onboard the satellite UARS were analysed. The measurements made in daytime and at night were processed separately. To avoid the latitudinal variations, the data sample was separated into subsamples within narrow latitudinal ranges. Our analysis of the night measurements showed some increase of the temperature at an altitude of around 90 km in the periods near 100‒130, 190‒230 and 300‒340 days during the year. The obtained temperature changes cannot be explained by solar or geomagnetic activity features. The temperature variations detected may be caused by powerful meteor showers which can produce some changes in photo-chemical and dynamical processes in lower thermosphere during their activity.
Keywords: geomagnetic activity, meteor showers, temperature
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