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Atmospheric and Oceanic Optics

2019 year, number 4

Seasonal statistics of the vertical distribution of wind speed at the Baikal Astrophysical Observatory

L.A. Bolbasova1,2, V.P. Lukin1, A.Yu. Shikhovtsev3, P.G. Kovadlo3
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634055, Russia
2National Research Tomsk State University, 36, Lenin Avenue, Tomsk, 634050,Russia
3Institute of Solar-Terrestrial Physics of the Siberian Branch of the RAS, 664033, Irkutsk, 126a, Lermontova str
Keywords: астроклимат, скорость ветра, адаптивная оптика, astroclimate, wind speed, adaptive optics


Seasonal changes in the altitude distribution of wind speed in the lake Baikal region for the Baikal Astrophysical Observatory of the ISSP SB RAS are studied in connection with the task of developing an adaptive optics system of the Large Solar Vacuum Telescope. The data of NCEP/NCAR in the period 1948-2016 are analyzed. Average and median values, first and third quartiles of the wind speed profiles to an altitude of 32.5 km are calculated for each month of the year. The seasonal variations in the tropopause height are obtained from NCEP/NCAR data. A model for the wind speed profile is suggested. A feature of the model is the consideration of wind speed at 200 hPa as an indicator of the quality of astronomical images.