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arXiv 1009.3902astro-ph.IM
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几个天文台高空风场的改进模式

Improved models of upper-level wind for several astronomical observatories

Lewis C. Roberts,, L. William Bradford

摘要:

了解风速和风向作为高度的函数对于正确模拟大气湍流是至关重要的。我们使用了无线电探空仪数据从发射场附近的重要天文观测站,并创建了风速和风向的平均配置文件,也计算了理查森数配置文件。使用过去30年的数据,我们扩展了1977年格林伍德风廓线,包括参数,显示季节性变化和位置的差异。从我们的模型增加的信息是有用的自适应光学系统和其他成像系统的设计。我们的理查森数的分析表明,持续的湍流层可以推断,当我们的长期平均数据中存在较低的值。了解这些层的存在可能有助于自适应光学和激光通信的规划。

英文摘要:

An understanding of wind speed and direction as a function of height are critical to the proper modeling of atmospheric turbulence. We have used radiosonde data from launch sites near significant astronomical observatories and created mean profiles of wind speed and direction and have also computed Richardson number profiles. Using data from the last 30 years, we extend the 1977 Greenwood wind profile to include parameters that show seasonal variations and differences in location. The added information from our models is useful for the design of adaptive optics systems and other imaging systems. Our analysis of the Richardson number suggests that persistent turbulent layers may be inferred when low values are present in our long term averaged data. Knowledge of the presence of these layers may help with planning for adaptive optics and laser 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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