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arXiv 1902.07977astro-ph.IM
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关于24小时时间尺度上天文台上空大气参数和光学turbulence的预报

Towards the forecast of atmospheric parameters and optical turbulence above an astronomical site on 24h time scale

G. Martelloni, E. Masciadri, A. Turchi

摘要:

大气参数和光学湍流预报在地基天文中的应用是非常关键的,主要是队列调度。到目前为止,大多数努力已经解决了我们的小组在开发算法的光学湍流(CN 2)和所附的综合天体气候参数和量化的性能的Astro-Meso-Nh包在重建这些参数。此外,还对Meso-Nh在重建地基天文学相关大气参数方面的性能进行了深入的分析。我们的研究总是提到夜间制度。为了将我们的研究应用到白天的时间制度,我们提出,在这方面的贡献,通过比较模型输出和测量的经典大气参数相关的地基天文学在夜间和白天的时间得到的初步结果。我们选择了Roque de los Muchachos天文台(加那利群岛)作为测试案例,该天文台提供了由同一峰会/天文台上不同望远镜的不同传感器提供的非常扩展的测量集。接近地面的典型的白天的对流制度是非常不同的稳定制度的特点夜间。因此,这项研究的目的是扩大域的Astro-Meso-Nh代码的有效性,以新的湍流制度,它允许覆盖一天的24小时。这种方法不仅可以应用于太阳望远镜(例如EST),而且可以应用于范围更广的科学领域,而不仅仅是在卫星通信等天文学方面。

英文摘要:

Forecast of the atmospheric parameters and optical turbulence applied to the ground-based astronomy is very crucial mainly for the queue scheduling. So far, most efforts have been addressed by our group in developing algorithms for the optical turbulence (CN2) and annexed integrated astroclimatic parameters and quantifying the performances of the Astro-Meso-Nh package in reconstructing such parameters. Besides, intensive analyses on the Meso-Nh performances= in reconstructing atmospheric parameters relevant for the ground-based astronomy has been carried out. Our studies referred always to the night time regime. To extend the applications of our studies to the day time regime, we present, in this contribution, preliminary results obtained by comparing model outputs and measurements of classical atmospheric parameter relevant for the ground-based astronomy in night and day time. We chose as a test case, the Roque de los Muchachos Observatory (Canary Islands), that offers a very extended set of measurements provided by different sensors belonging to different telescopes on the same summit/Observatory. The convective regime close to the ground typical of the day time is pretty different from the stable regime characterising the night time. This study aims therefore to enlarge the domain of validity of the Astro-Meso-Nh code to new turbulence regimes and it permits to cover the total 24 hours of a day. Such an approach will permit not only an application to solar telescopes (e.g. EST) but also applications to a much extended set of scientific fields, not only in astronomical context such as satellite communications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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