ACT-America: HALO Lidar Measurements of AOP and ML Heights, 2019

This dataset provides measurements from the High Altitude Lidar Observatory (HALO) instrument, an airborne multi-function Differential Absorption Lidar (DIAL) and High Spectral Resolution Lidar (HSRL), operating at 532 nm and 1064 nm wavelengths onboard a C-130 aircraft during the June and July 2019 ACT-America campaign. The flights took place over eastern and central North America based from Shreveport, Louisiana; Lincoln, Nebraska; and NASA Wallops Flight Facility located on the eastern shore of Virginia. HALO data were sampled at 0.5 s temporal and 1.25 m vertical resolutions. The data include profiles of aerosol optical properties (AOP), distributions of mixed layer heights (MLH), columns of tropospheric methane, and navigation parameters. The data are provided in HDF5 format along with PNG images and a companion files in Portable Document (*.pdf) format.

本数据集收录了来自高空激光雷达观测站（High Altitude Lidar Observatory，简称HALO）的测量数据，该观测站搭载于C-130飞机上，配备多功能差分吸收激光雷达（Differential Absorption Lidar，简称DIAL）和高光谱分辨率激光雷达（High Spectral Resolution Lidar，简称HSRL），在2019年6月至7月期间的ACT-America活动中，于532 nm和1064 nm波长下进行观测。飞行活动覆盖了北美东部和中部地区，基地分别位于路易斯安那州的什里夫波特、内布拉斯加州的林肯以及位于弗吉尼亚州东海岸的NASA沃尔lops飞行设施。HALO数据以0.5秒的时间分辨率和1.25米的垂直分辨率进行采样。数据包括气溶胶光学特性（AOP）的剖面、混合层高度（MLH）的分布、对流层甲烷柱以及导航参数。数据以HDF5格式提供，并附有PNG图像以及配套的便携文档格式（Portable Document，简称*.pdf）文件。