IOP SciNotes Pub Date : 2020-10-01 , DOI: 10.1088/2633-1357/abba45 Christopher Jellen 1 , Charles Nelson 2 , Cody Brownell 1 , John Burkhardt 1 , Miles Oakley 2
The index of refraction structure constant, characterizing the intensity of optical turbulence, describes the disruption of a propagating electromagnetic beam passing through an inhomogeneously heated turbulent environment. In order to improve predictive models, it is critical to develop a deeper understanding of the relationships between environmental parameters and optical turbulence. To that end, an overwater, 890 m scintillometer link was established along the Chesapeake Bay adjacent to the Severn River in Annapolis, Maryland. Specifically, data from the scintillometer, as well, as numerous meteorological parameters were collected over the period of approximately 15 months to characterize a scintillometer link in the near-maritime environment. The characteristics of this near-maritime link were distinct from those observed in prior over-land and open ocean links. Further, existing macro-meteorological models for predicting from environmental parameters developed for open-ocean links were shown to perform poorly in the near-maritime environment. While the offshore adapted macro-meteorological model demonstrated lower prediction error, this study suggests that new models could be developed to reduce prediction error in the near-maritime environment. The complete data set, including measurements, and to our knowledge, one of the first to extend beyond one year, is available.
中文翻译:
近海环境下大气光学湍流的测量与分析
折射率结构常数,表征光学湍流的强度,描述传播的电磁束通过不均匀加热的湍流环境的中断。为了改进预测模型,深入了解环境参数与光学湍流之间的关系至关重要。为此,在马里兰州安纳波利斯的塞文河附近的切萨皮克湾建立了一个 890 m 的水上闪烁仪连接。具体来说,来自闪烁仪的数据也是如此,因为在大约 15 个月的时间里收集了大量气象参数,以表征近海环境中闪烁仪的联系。这种近海连接的特征与之前在陆地和公海连接中观察到的特征不同。此外,现有的宏观气象模型用于根据为公海链路开发的环境参数进行预测,在近海环境中表现不佳。虽然近海适应的宏观气象模型显示出较低的预测误差,但这项研究表明可以开发新模型来减少近海环境中的预测误差。完整的数据集,包括 测量,据我们所知,第一个超过一年的测量是可用的。