Ground-Level Atmospheric Turbulence in the Sayan Solar Observatory in Summer 2023

IF 0.9 Q4 OPTICS Atmospheric and Oceanic Optics Pub Date : 2024-11-26 DOI:10.1134/S1024856024700659

V. V. Nosov, V. P. Lukin, E. V. Nosov, A. V. Torgaev

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Abstract

Estimating the influence of atmospheric turbulence on the quality of astronomical images requires appropriate investigations at the sites of observatories. The results of long-term measurements of the atmospheric turbulence characteristics in the Sayan Solar Observatory (SSO) of the Institute of Solar-Terrestrial Physics, Siberian Branch, Russian Academy of Sciences, in summer 2023 are presented. It is confirmed that the cause of the prevailing direction of local winds appearing in SSO is the 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 the SSO compared to the turbulence over a 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 used in the Monin–Obukhov similarity theory depending on the atmospheric stratification. The results will be useful for specialists in astroclimate and theory of atmospheric turbulence.

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2023 年夏季萨彦太阳观测站的地面大气湍流

要估算大气湍流对天文图像质量的影响，需要在天文台所在地进行适当的调查。本文介绍了俄罗斯科学院西伯利亚分院日地物理研究所萨彦太阳观测站（SSO）2023 年夏季大气湍流特征的长期测量结果。结果表明，SSO 出现局部风主导方向的原因是 SSO 观测站以北的萨彦山脉和以南的山谷之间的温度山谷梯度。与中纬度平坦地形上的湍流相比，SSO 的大气湍流平均强度较小，这一点得到了证实。表明在 SSO 区域存在相干湍流，在该区域，光学仪器获得的图像质量有所改善。还获得了莫宁-奥布霍夫相似性理论中使用的温度和风速湍流尺度的新数据，这取决于大气分层情况。这些结果将对天体气候和大气湍流理论专家有所帮助。

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来源期刊

Atmospheric and Oceanic Optics OPTICS-

CiteScore

2.40

自引率

42.90%

发文量

期刊介绍： Atmospheric and Oceanic Optics is an international peer reviewed journal that presents experimental and theoretical articles relevant to a wide range of problems of atmospheric and oceanic optics, ecology, and climate. The journal coverage includes: scattering and transfer of optical waves, spectroscopy of atmospheric gases, turbulent and nonlinear optical phenomena, adaptive optics, remote (ground-based, airborne, and spaceborne) sensing of the atmosphere and the surface, methods for solving of inverse problems, new equipment for optical investigations, development of computer programs and databases for optical studies. Thematic issues are devoted to the studies of atmospheric ozone, adaptive, nonlinear, and coherent optics, regional climate and environmental monitoring, and other subjects.