Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ge%26ae..47..764i&link_type=abstract
Geomagnetism and Aeronomy, Volume 47, Issue 6, pp.764-767
Physics
1
92.60.Hl, 92.60.Ry
Scientific paper
The results of measurements of the temperature of the [OI] 557.7 nm emission conducted from December 2002 to March 2003 at the Maimaga optical site near Yakutsk (geographic latitude and longitude are 63° N and 129.7° E, respectively) with the help of a Fabry-Pérot spectrometer are presented. The temperature measurements were conducted continuously during moonless and moonshine nights. To analyze the behavior of the 557.7 nm emission, Doppler temperature during localized in height stratospheric warming events, the data on the stratospheric temperatures (a height-time cut at the 1, 2, 5, 10, 30, 50, and 70 hPa levels and charts of the contour lines of the temperature horizontal field at a level of 50 hPa) obtained from NOAA via the Internet were attracted. During the 2002/2003 winter, localized in height weak stratospheric warming events showing no signs of the vertical mixing were observed. From this point of view, it was interesting to find how the thermal regime of the lower thermosphere behaves in the periods of a localized stratospheric warming. It is shown that in the periods of localized at heights stratospheric warming events, the temperature regime of the lower thermosphere undergoes no changes. The mean temperature at the background of short-period oscillations remains at the level of its model values.
Ignat'ev V. M.
Nikolashkin S. V.
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