A shipboard lidar system was examined the capability to retrieve detailed variation of the water vapor mixing ratio in and above the marine atmospheric boundary layer (MABL). The water vapor mixing ratio is retrieved from the ratio of Raman lidar signals by water vapor and by nitrogen, with the help of radiosonde data beside. Data obtained during two special observations, Pre-YMC and YMC-Sumatra, off the west coast of Sumatra island were examined.

The mixing ratio was retrieved in the nighttime over 1 km height with the resolution of 10-minutes in temporal and 120-meters in vertical. The root mean square difference from the radiosonde data is about or less than 1 g/kg in MABL. A case study demonstrates that the retrieved spatiotemporal variation of water vapor mixing ratio captures meso-scale drying and moistening in detail. The capabilities of the retrieved data were well demonstrated, while number of improvements are expected in future work.

检查了舰船激光雷达系统获取海洋大气边界层（MABL）内和上方的水蒸气混合比的详细变化的能力。借助无线电探空仪数据，从水蒸气和氮气从拉曼激光雷达信号的比率中检索出水蒸气混合比。研究了苏门答腊岛西海岸外的两个特别观测（YMC前和YMC-苏门答腊）获得的数据。

混合比是在夜间提取的，高度超过1 km，时间分辨率为10分钟，垂直分辨率为120米。在MABL中，与探空仪数据的均方根差约为1 g / kg或小于1 g / kg。案例研究表明，所检索到的水蒸气混合比的时空变化可以捕获中尺度干燥和湿润的细节。充分证明了所检索数据的功能，而在未来的工作中有望实现许多改进。