Faculty of System Design, Tokyo Metropolitan University, Tokyo 1910065, Japan.
Department of Biological Environment, Akita Prefectural University, Akita 0100195, Japan.
Sensors (Basel). 2018 Nov 21;18(11):4064. doi: 10.3390/s18114064.
A 1.6 μm differential absorption Lidar (DIAL) system for measurement of vertical CO₂ mixing ratio profiles has been developed. A comparison of CO₂ vertical profiles measured by the DIAL system and an aircraft in situ sensor in January 2014 over the National Institute for Environmental Studies (NIES) in Tsukuba, Japan, is presented. The DIAL measurement was obtained at an altitude range of between 1.56 and 3.60 km with a vertical resolution of 236 m (below 3 km) and 590 m (above 3 km) at an average error of 1.93 ppm. An in situ sensor for cavity ring-down spectroscopy of CO₂ was installed in an aircraft. CO₂ mixing ratio measured by DIAL and the aircraft sensor ranged from 398.73 to 401.36 ppm and from 399.08 to 401.83 ppm, respectively, with an average difference of -0.94 ± 1.91 ppm below 3 km and -0.70 ± 1.98 ppm above 3 km between the two measurements.
已开发出用于测量垂直 CO₂混合比廓线的 1.6μm 差分吸收激光雷达（DIAL）系统。本文介绍了 2014 年 1 月在日本筑波的环境研究所（NIES）上空，利用 DIAL 系统和飞机原位传感器对 CO₂垂直廓线进行的比较测量。DIAL 测量的高度范围在 1.56 到 3.60km 之间，垂直分辨率为 236m（低于 3km）和 590m（高于 3km），平均误差为 1.93ppm。一台用于 CO₂腔衰荡光谱的原位传感器被安装在一架飞机上。DIAL 和飞机传感器测量的 CO₂混合比分别在 398.73 到 401.36ppm 和 399.08 到 401.83ppm 之间，在 3km 以下，两者的平均差值为-0.94±1.91ppm，在 3km 以上，两者的平均差值为-0.70±1.98ppm。
