Simulating Vertical Profiles of Optical Turbulence at the Special Astrophysical Observatory Site
In this paper, we used meteorological data to simulate vertical profiles of optical turbulence at the Special Astrophysical Observatory (SAO) (Russia, 43°40′19″ N 41°26′23″ E, 2100 m a.s.l.), site of the 6 m Big Telescope Alt-azimuthal. For the first time, the vertical profiles of optical turbulence...
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2024-11-01
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| author | Artem Y. Shikhovtsev Sergey A. Potanin Evgeniy A. Kopylov Xuan Qian Lidia A Bolbasova Asya V. Panchuk Pavel G. Kovadlo |
| author_facet | Artem Y. Shikhovtsev Sergey A. Potanin Evgeniy A. Kopylov Xuan Qian Lidia A Bolbasova Asya V. Panchuk Pavel G. Kovadlo |
| author_sort | Artem Y. Shikhovtsev |
| collection | DOAJ |
| description | In this paper, we used meteorological data to simulate vertical profiles of optical turbulence at the Special Astrophysical Observatory (SAO) (Russia, 43°40′19″ N 41°26′23″ E, 2100 m a.s.l.), site of the 6 m Big Telescope Alt-azimuthal. For the first time, the vertical profiles of optical turbulence are calculated for the SAO using ERA-5 reanalysis data. These profiles are corrected using DIMM measurements as well as estimations of atmospheric boundary layer heights. We may note that the method basically reconstructs the most important features of the shape of the measured profile under clear sky. Atmospheric turbulent layers were identified, and the strength of optical turbulence in these layers was estimated. The model hourly values of seeing corresponding to the obtained vertical profiles range from 0.40 to 3.40 arc sec; the values of the isoplanatic angle vary in the range from 1.00 to 3.00 arc sec (at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>λ</mi></semantics></math></inline-formula> = 500 nm). The calculated median of seeing is close to 1.21 arc sec. These estimations are close to the measured median of seeing (1.21 arc sec). |
| format | Article |
| id | doaj-art-65e8ee0d295e43f8a38cdfff8bd15152 |
| institution | Kabale University |
| issn | 2073-4433 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj-art-65e8ee0d295e43f8a38cdfff8bd151522024-11-26T17:50:27ZengMDPI AGAtmosphere2073-44332024-11-011511134610.3390/atmos15111346Simulating Vertical Profiles of Optical Turbulence at the Special Astrophysical Observatory SiteArtem Y. Shikhovtsev0Sergey A. Potanin1Evgeniy A. Kopylov2Xuan Qian3Lidia A Bolbasova4Asya V. Panchuk5Pavel G. Kovadlo6Institute of Solar-Terrestrial Physics Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, RussiaSternberg Astronomical Institute, Lomonosov Moscow State University, Universitetskii Ave. 13, Moscow 119234, RussiaInstitute of Astronomy, Russian Academy of Sciences, Moscow 119017, RussiaNational Astronomical Observatories of China, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, ChinaV.E. Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences, Tomsk 634055, RussiaSpecial Astrophysical Observatory of the Russian Academy of Sciences, Nizhnij Arkhyz, Zelenchukskiy Region, Karachai-Cherkessian 369167, RussiaInstitute of Solar-Terrestrial Physics Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, RussiaIn this paper, we used meteorological data to simulate vertical profiles of optical turbulence at the Special Astrophysical Observatory (SAO) (Russia, 43°40′19″ N 41°26′23″ E, 2100 m a.s.l.), site of the 6 m Big Telescope Alt-azimuthal. For the first time, the vertical profiles of optical turbulence are calculated for the SAO using ERA-5 reanalysis data. These profiles are corrected using DIMM measurements as well as estimations of atmospheric boundary layer heights. We may note that the method basically reconstructs the most important features of the shape of the measured profile under clear sky. Atmospheric turbulent layers were identified, and the strength of optical turbulence in these layers was estimated. The model hourly values of seeing corresponding to the obtained vertical profiles range from 0.40 to 3.40 arc sec; the values of the isoplanatic angle vary in the range from 1.00 to 3.00 arc sec (at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>λ</mi></semantics></math></inline-formula> = 500 nm). The calculated median of seeing is close to 1.21 arc sec. These estimations are close to the measured median of seeing (1.21 arc sec).https://www.mdpi.com/2073-4433/15/11/1346optical turbulenceprofilesERA-5 reanalysisair refractive index structure constant <named-content content-type="equation"><inline-formula><mml:math id="mm5555"><mml:semantics><mml:msubsup><mml:mi>C</mml:mi><mml:mi>n</mml:mi><mml:mn>2</mml:mn></mml:msubsup></mml:semantics></mml:math></inline-formula></named-content> |
| spellingShingle | Artem Y. Shikhovtsev Sergey A. Potanin Evgeniy A. Kopylov Xuan Qian Lidia A Bolbasova Asya V. Panchuk Pavel G. Kovadlo Simulating Vertical Profiles of Optical Turbulence at the Special Astrophysical Observatory Site Atmosphere optical turbulence profiles ERA-5 reanalysis air refractive index structure constant <named-content content-type="equation"><inline-formula><mml:math id="mm5555"><mml:semantics><mml:msubsup><mml:mi>C</mml:mi><mml:mi>n</mml:mi><mml:mn>2</mml:mn></mml:msubsup></mml:semantics></mml:math></inline-formula></named-content> |
| title | Simulating Vertical Profiles of Optical Turbulence at the Special Astrophysical Observatory Site |
| title_full | Simulating Vertical Profiles of Optical Turbulence at the Special Astrophysical Observatory Site |
| title_fullStr | Simulating Vertical Profiles of Optical Turbulence at the Special Astrophysical Observatory Site |
| title_full_unstemmed | Simulating Vertical Profiles of Optical Turbulence at the Special Astrophysical Observatory Site |
| title_short | Simulating Vertical Profiles of Optical Turbulence at the Special Astrophysical Observatory Site |
| title_sort | simulating vertical profiles of optical turbulence at the special astrophysical observatory site |
| topic | optical turbulence profiles ERA-5 reanalysis air refractive index structure constant <named-content content-type="equation"><inline-formula><mml:math id="mm5555"><mml:semantics><mml:msubsup><mml:mi>C</mml:mi><mml:mi>n</mml:mi><mml:mn>2</mml:mn></mml:msubsup></mml:semantics></mml:math></inline-formula></named-content> |
| url | https://www.mdpi.com/2073-4433/15/11/1346 |
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