Vol. 37, issue 05, article # 3

Abstract:

The results of long-term measurements of the atmospheric turbulence characteristics in the Sayan Solar Observatory (SSO) in summer 2023 are presented. It is confirmed that the cause of the prevailing direction of local winds appearing in SSO is temperature mountain-valley gradient between the Sayan Mountains north of the SSO observatory and the valley to the south. A smaller level of the mean intensity of atmospheric turbulence in SSO compared to the turbulence over flat terrain in middle latitudes is confirmed. The presence of coherent turbulence in the SSO area is shown, at which the quality of images obtained by optical instruments is improved. New data are obtained for the turbulent scales of temperature and wind speed depending on the atmospheric stratification.

Keywords:

turbulence, astroclimate, stratification, turbulent scale, turbulence coherence, image quality

References:

1. Monin A.S., Yaglom A.M. Statisticheskaya gidromekhanika. V. 1. M.: Nauka, 1965. 639 p.; V. 2. M.: Nauka, 1967. 720 p.
2. Tatarskii V.I. Rasprostranenie voln v turbulentnoi atmosfere. M.: Nauka, 1967. 548 p.
3. Gurvich A.S., Kon A.I., Mironov V.L., Khmelevtsov S.S. Lazernoe izluchenie v turbulentnoi atmosfere. M.: Nauka, 1976. 277 p.
4. Mironov V.L. Rasprostranenie lazernogo puchka v turbulentnoi atmosfere. Novosibirsk: Nauka, 1981. 246 p.
5. Kolchinskii I.G. Opticheskaya nestabil'nost' zemnoi atmosfery po nablyudeniyam zvezd. Kiev: Naukova Dumka, 1967. 183 p.
6. Shcheglov P.V. Problemy opticheskoi astronomii. M.: Nauka, 1980. 272 p.
7. Khromov S.P. Osnovy sinopticheskoi meteorologii. L.: Gidrometeoizdat, 1948. 696 p.
8. Bogushevich A.Ya. Ul'trazvukovye metody otsenivaniya meteorologicheskikh i turbulentnykh parametrov atmosfery // Optika atmosf. i okeana. 1999. V. 12, N 2. P. 170–174.
9. Optical waves and laser beams in the irregular atmosphere / N. Blaunshtein, N. Kopeika (eds.). Boca Raton, London; New York: Taylor & Francis Group, CRC Press, 2018. 334 p.
10. Nosov V.V., Lukin V.P., Nosov E.V., Torgaev A.V. Turbulentnye masshtaby teorii podobiya Monina–Obukhova v gornom anizotropnom pogranichnom sloe // Izv. vuzov. Fizika. 2020. V. 63, N 2. P. 55–60. DOI: 10.17223/00213411/63/2/55.
11. Nosov V.V., Lukin V.P., Nosov E.V., Torgaev A.V. Universal'naya funktsiya podobiya v teorii Monina-Obukhova v ekstremal'no ustoichivom turbulentnom pogranichnom sloe // Tr. XXVIII Mezhdunarodnogo simpoziuma «Optika atmosfery i okeana. Fizika atmosfery». Tomsk: Izd-vo IOA SO RAN, 2022. P. А-36–41. DOI: 10.56820/OAOPA.2022.17.75.001.
12. Nosov V.V., Lukin V.P., Nosov E.V., Torgaev A.V. Rezul'taty izmerenii kharakteristik funktsii podobiya v gornom turbulentnom pogranichnom sloe // Tr. XXV Mezhdunarodnogo simpoziuma «Optika atmosfery i okeana. Fizika atmosfery». Tomsk: Izd-vo IOA SO RAN, 2020. P. B-315–319.
13. Nosov V.V., Lukin V.P., Nosov E.V., Torgaev A.V. Результаты измерений вертикальной производной температуры и скорости в горном турбулентном пограничном слое // Tr. XXV Mezhdunarodnogo simpoziuma «Optika atmosfery i okeana. Fizika atmosfery». Tomsk: Izd-vo IOA SO RAN, 2020. P. B-304–310.