Atmospheric turbulence and aerosol measurements in Surface Layer Turbulence and Environmental Science Test (SLTEST) facility in Dugway, Utah from 2019-06-10 to 2019-07-15

Using three Doppler scanning LiDARs, three Optical Particle Counters (OPCs), one Ceilometer, and one 3-D sonic anemometer, atmospheric measurements were conducted at the Surface Layer Turbulence and Environmental Science Test (SLTEST) facility in Dugway, Utah, during the period of 2019-06-10 to 2019-07-15. This unique location provides a natural facility to investigate near walled turbulence for a range of over 240 km streamwise and more than 48km spanwise in favorable conditions. Coupled with the sonic anemometer, the LiDARs provide high frequency and long-ranged simultaneous measurements of wind velocity and atmospheric backscatter field under all atmospheric stability regimes and wind directions. Moreover, the OPCs helps calibrate the simultaneous backscatter measurements from the LiDAR and Ceilometer (vertical profiles) to estimate collocated aerosol concentration throughout the domain range. This unique dataset will help investigate the coupling of a passive scalar in a near-wall turbulent flow under various flow regimes. Simultaneous data have been collected from all these instruments using coupled scanning strategies which provide a unique opportunity to study passive scalar entrainment and coupling with atmospheric turbulence. This dataset contains raw and processed vertical profiles of backscatter from the ceilometer, as well as the instruments user guide, daily quick-look plots, and a Readme file; raw and summary data from the sonic anemometer, in addition to a Readme file and Matlab scripts for processing the data; raw and processed data from each LiDAR instrument and a Readme file; and data for each ceilometer, including data from each of four units measuring at 6 m on the 28m tower.本数据集依托3台多普勒扫描激光雷达（Doppler scanning LiDAR）、3台光学粒子计数器（OPCs）、1台云高仪（Ceilometer）以及1台三维超声风速仪，于2019年6月10日至2019年7月15日期间，在犹他州达格韦的近地层湍流与环境科学试验（SLTEST）场地开展大气观测。该独特观测场地可在适宜条件下，为研究沿流向超过240 km、展向超过48 km范围内的近壁湍流提供天然试验平台。结合超声风速仪，激光雷达可在所有大气稳定度类型与风向条件下，同步开展高频、长距离的风速与大气后向散射场观测。此外，光学粒子计数器可用于校准激光雷达与云高仪（垂直廓线）的同步后向散射测量结果，进而估算全域范围内的气溶胶浓度。本独特数据集可用于研究不同流态下近壁湍流中被动标量的耦合过程。本次观测采用同步扫描策略采集所有仪器的同步数据，为研究被动标量卷吸及其与大气湍流的耦合过程提供了独特契机。本数据集涵盖以下内容：云高仪的原始与处理后后向散射垂直廓线数据，配套仪器使用手册、每日快速查看图与Readme文件；三维超声风速仪的原始与汇总数据，配套Readme文件与数据处理Matlab脚本；各台激光雷达的原始与处理后数据及Readme文件；以及各云高仪相关数据，包括28米高塔上6米高度处4个测量单元的采集数据。