Astroclimatic Conditions

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Atmospheric Techniques, Instruments, and Modeling".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 4208

Special Issue Editors


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V. E. Zuev Institute of Atmospheric Optics of the Siberian Branch of the Russian Academy of Sciences, Institute of Astronomy of the Russian Academy of Sciences, Tomsk, Russia
Interests: atmospheric turbulence; phase fluctuation; adaptive optics; astronomy; astroclimatic conditions.
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Institute of Solar-Terrestrial Physics of Siberian Branch of Russian Academy of Sciences (ISTP SB RAS), Irkutsk 664033, Russia
Interests: turbulence and wave processes; telescope; methods; data processing
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Special Issue Information

Dear Colleagues,

Current problems in the field of astronomy require the creation and modernization of existing instruments. Tasks require a constant increase in parameters such as improving the sensitivity of receivers, increasing the angular resolution, increasing the field of view, and multi-wave spectral analysis. The limiting factor for all these requirements is always the earth's atmosphere. The purpose of this Special Issue is to showcase the latest results in the field of research of the Earth's astroclimate. The study of the astroclimate plays an important role not only in astronomy but also in applied problems, such as optical communication, etc.

Interesting topics for the Special Issue include various areas including, but not limited to, the following:

* New methods of observation of astroclimate parameters;

* Modeling of astroclimate parameters for problems of astronomy, vision systems, energy transmission, and communication;

* Atmospheric turbulence;

* Atmospheric boundary layer;

* Astroclimate in the tasks of sub.mm astronomy;

* Research of the astroclimate from space.

We will be glad to see your work in our Special Issue!

Dr. Evgeniy A. Kopylov
Dr. Artem Yu. Shikhovtsev
Guest Editors

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Keywords

  • astroclimate
  • Fried parameter
  • turbulence
  • telescope
  • reanalyze
  • randomly inhomogeneous medium
  • water-vapor content
  • surface layer
  • boundary layer
  • seeing
  • adaptive optics

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Published Papers (2 papers)

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13 pages, 4080 KiB  
Article
Long-Term Trends of Astroclimatic Parameters above the Terskol Observatory
by Lidia A. Bolbasova and Evgeniy A. Kopylov
Atmosphere 2023, 14(8), 1264; https://doi.org/10.3390/atmos14081264 - 9 Aug 2023
Cited by 6 | Viewed by 1090
Abstract
Astroclimatic conditions characterize the quality of an astronomical site. The Terskol Observatory was founded over 42 years ago in 1980. The astronomical site (coordinates 43°16′29″ N, 42°30′03″ E) is located about 10 km from Mt. Elbrus in the northern Caucasus Mountains. The paper [...] Read more.
Astroclimatic conditions characterize the quality of an astronomical site. The Terskol Observatory was founded over 42 years ago in 1980. The astronomical site (coordinates 43°16′29″ N, 42°30′03″ E) is located about 10 km from Mt. Elbrus in the northern Caucasus Mountains. The paper presents the results of an analysis of long-term variations from 1980 to 2022 of astroclimatic parameters such as total cloud cover, precipitable water vapor, and wind speed at a level of 200 hPa above the Terskol Observatory using atmospheric ERA5 Reanalysis data from the European Center for Medium-Range Weather Forecast. The probability distributions and seasonal variations of the astroclimatic parameters are also presented. Long-term trends of the astroclimatic parameters are studied with statistically significant trend analysis methods using the Mann–Kendall test and the Sen’s slope test to estimate the magnitude of the changes. The results show non-significant decreases of annual average 200-hPa wind speed and increases in precipitable water vapor, but significant (99 per cent confidence level) long-term decreasing of total cloud cover above the Terskol Observatory. Full article
(This article belongs to the Special Issue Astroclimatic Conditions)
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10 pages, 2810 KiB  
Brief Report
Astronomical Seeing and Meteorological Parameters at Maidanak Observatory
by Yusufjon Tillayev, Azimjon Azimov, Shuhrat Ehgamberdiev and Sabit Ilyasov
Atmosphere 2023, 14(2), 199; https://doi.org/10.3390/atmos14020199 - 18 Jan 2023
Cited by 11 | Viewed by 2507
Abstract
In this article, we present the results of astronomical seeing measurements conducted at the Maidanak observatory and the influence of meteorological parameters on astronomical seeing. A differential image motion monitor (DIMM) was used to measure astronomical seeing. Astronomical seeing observations were made between [...] Read more.
In this article, we present the results of astronomical seeing measurements conducted at the Maidanak observatory and the influence of meteorological parameters on astronomical seeing. A differential image motion monitor (DIMM) was used to measure astronomical seeing. Astronomical seeing observations were made between 2018–2022, mainly in the summer and autumn months. A total of 266 night observations were conducted between 2018 and 2022. For the whole time frame, the median seeing value was 0.69 arc seconds. With a median value of 0.65″, 2019 is the year with the best seeing, and 2021 has the worst seeing (0.71″). Analysis of long-term variations of the amount of clear time revealed a small trend of decrease in the amount. The correlation between the meteorological parameters and seeing was analyzed. It was determined that the meteorological parameters with the greatest impact on the seeing are wind speed and nighttime temperature variation. The correlation coefficient was equal to 13% and 21% for both quantities. It was found that wind direction and temperature have a relatively weak correlation with astronomical seeing. Full article
(This article belongs to the Special Issue Astroclimatic Conditions)
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