H PARAMETRINING MAVSUMIY O‘ZGARISHINI INOBATGA OLIB, MAYDANAK UCHUN INTEGRAL SUV MIQDORINI BAHOLASH
This article is devoted to the analysis of the annual and seasonal variations of the integrated amount of water (IWV) for the Maidanak astronomical observation site based on ERA5 reanalysis data. In the study, a height-adjustment method was applied, taking into account the seasonal variations of the scale height (H), which characterizes the vertical distribution of IWV. Using this methodology, the short-term seasonal variations of IWV values for 2016–2018, as well as the long-term dynamics for 2016–2025, were investigated and confirmed through graphical analysis. The obtained results allow for the assessment of the quality of astronomical observations at the Maidanak observatory and the identification of atmospheric limitations related to IWV. At the
same time, this approach can also be applied to other mountainous astronomical observatories, enhancing the efficiency of their observational activities.
1. Tillayev Y., Xurramov I. Maydanak observatoriyasida ERA5 ma‘lumotlari asosida integral suv miqdorini baholash. O‘zMU
xabarlari. 2025
2. Yusufjon Tillayev. Atmospheric parameters affecting astronomical observations at the Maidanak Observatory . 2024, SPIE,
13098, 130982A
3. Rajabov Y., Tillayev Y.Maydanak observatoriyasi atmosferasidagi integral suv miqdori variatsiyalarini GPS-meteorologiya
usuli orqali tadqiq qilish RIAK-XII. 2019
4. Artem Yu. Shikhovtsev, Pavel G. Kovadlo, Vladimir B. Khaikin and Alexander V. Kiselev. Precipitable Water Vapor and
Fractional Clear Sky Statistics within the Big Telescope Alt-Azimuthal Region. Remote Sens. 2022, 14, 6221
5. Bevis, M., et al. (1992). GPS Meteorology: Remote sensing of atmospheric water vapor using the Global Positioning System.
Journal of Geophysical Research: Atmospheres, 97(D14), 15787–15801.
6. Maohua Ding, Yunxiang Zhang, Zishen Li, and Jinjun Liu. Developments of Empirical Models for Vertical Adjustment of
Precipitable Water Vapor Measured by GNSS. Remote Sensing, 2025, 17(3), 512
7. Azimov A. M., Tillayev Y.A., Hafizov A. R. and Tillayeva N. Y. Long-term Statistics of Meteorological Data at the
Maidanak Astronomical Observatory. 2025, IOPscience
8. Tillayev Y., Azimov A., Hafizov A. Astronomical Seeing at Maidanak Observatory during the year 2018. Galaxies 2021, 9,
38. [Google Scholar] [CrossRef]
9. Tillayev Y., Azimov A., Ehgamberdiev S., Ilyasov S. Astronomical Seeing and Meteorological Parameters at Maidanak
Observatory. Atmosphere 2023, 14, 199. https://doi.org/10.3390/atmos14020199
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