2026-10-11T10:07:37Z https://www.scidb.cn/oai

10.57760/sciencedb.18434 2024-04-29T09:31:32Z

2024-04-29 Observation data of a metastable helium lidar from November 2023 to April 2024 doi:10.57760/sciencedb.18434 en This data is the raw echo photon data from metastable helium lidar in Hainan, China. This LiDAR can measure the number density of metastable helium in the atmosphere from 200-1000km. The raw signal is recorded as photon counts with height resolution of 1km and time resolution of 30s (1500 laser pulses). The detector opens the electronic gate from 230us after the laser pulse, only the backscatter of 45-2700km is retained.  metastable helium lidar; Thermospheric density; Solar photoelectron Zhenwei Liu Ruocan Zhao Xianghui Xue Hang Zhou Zhaofeng Wang Yingyu Liu Jiangtao Li Dongsong Sun Jiaxin Lan Tingdi Chen Dongfeng Zhao Xiankang Dou PUBLIC https://creativecommons.org/licenses/by-nc-nd/4.0/ dataset Science Data Bank