Jellen Christopher, Nelson Charles, Brownell Cody, Burkhardt John
J Opt Soc Am A Opt Image Sci Vis. 2024 Jun 1;41(6):B65-B72. doi: 10.1364/JOSAA.520980.
The United States Naval Academy long-term scintillation measurement campaign was a multi-year effort to characterize optical turbulence in the near-maritime atmospheric boundary layer (ABL). At its core, the field experiment consists of in situ measurements of bulk atmospheric and oceanographic parameters, as well as path-averaged measurements of the refractive index structure parameter, 2, collected using a large-aperture scintillometer. The field experiment ran from January 1st, 2020, through September 26th, 2023, representing the most comprehensive collection of optical turbulence measurements in the near-maritime ABL to date. Long-term measurements enable researchers to evaluate existing theory and develop new models applicable to this environment. The present study characterizes some of the physical relationships that affect optical turbulence. This characterization focuses on the relationship between local optical turbulence and select atmospheric and oceanographic parameters. The impact of temperature gradients on the extent of optical turbulence was analyzed, along with its interactions with relative humidity and wind speed. The diurnal and seasonal variations in measured 2 were examined, with comparisons drawn against other environments. Further information and the full dataset are publicly available through the optical turbulence benchmark repository [Jellen et al., GitHub, 2023].
美国海军学院长期闪烁测量活动是一项为期多年的工作，旨在描述近海洋大气边界层（ABL）中的光学湍流特性。该现场实验的核心包括对大气和海洋学参数进行原位测量，以及使用大孔径闪烁仪对折射率结构参数C₂进行路径平均测量。该现场实验从2020年1月1日持续到2023年9月26日，是迄今为止近海洋ABL中最全面的光学湍流测量数据集。长期测量使研究人员能够评估现有理论，并开发适用于该环境的新模型。本研究描述了一些影响光学湍流的物理关系。这种描述重点关注局部光学湍流与选定的大气和海洋学参数之间的关系。分析了温度梯度对光学湍流程度的影响，以及它与相对湿度和风速的相互作用。研究了测量得到的C₂的昼夜和季节变化，并与其他环境进行了比较。更多信息和完整数据集可通过光学湍流基准存储库[Jellen等人，GitHub，2023]公开获取。
