Journal of Physical Studies 11(4), 432–437 (2007)
DOI: https://doi.org/10.30970/jps.11.432

THE RELATION BETWEEN EXTINCTION AND ATMOSPHERIC TIDES

V. Andruk¹, G. Butenko², V. Kostyuchenko¹, L. Svachij¹
¹Main Astronomical Observatory, NAS Ukraine
27, Zabolotny St., Kyiv, UA–03680, Ukraine
² International Center for Astronomical, Medical, and Ecological Research
31, Zabolotny St., Kyiv, UA–03680, Ukraine
e-mail: andruk@mao.kiev.ua, butenko@mao.kiev.ua

We consider the question whether the opacity of the Earth's atmosphere is regularly increased with respect to solar and lunar-solar tides in it. The data of photoelectric observations in the UBVR system made at the Terskol Peak Observatory ($λ$ = 2$^h$49$^m$59.854$^s$, $φ$ = 43$^\circ \ 16'34.72”$, $h=3100$ m) in 1987-1991 are used. Changes in values of the main coefficients of extinction with time are analyzed. The amplitudes of evening thermal tide in relation to the mean value are 0.03$\div$ 0.05$^m$. They describe increased opacity of the atmosphere. The variation in the main coefficients of extinction with spatial configuration of the Sun, Moon, and Earth is also analysed. During sagittal tides, the values of the extinction coefficients can be 5-10{\%} greater than their mean values.

PACS number(s): 92.70.Cp, 94.10.Vd, 95.75.De, 95.85.Kr