使用相结合的横向扫描拉曼散射激光雷达和反向拉曼散射激光雷达对温度和水蒸气测量的数据进行校正
Optics express
|August 13, 2025
概括
这项研究提出了激光雷达系统中大气传导度校正的新方法,提高了温度和水蒸气测量的精度,甚至在复杂的天气条件下,高达4.30公里.
科学领域:
- 大气科学 大气科学
- 遥感 遥感 遥感 遥感
- 利达尔技术 利达尔技术
背景情况:
- 准确的大气温度和水蒸气分析对于天气预报和气候监测至关重要.
- 传统的激光雷达系统面临着由于波长差异和气溶干扰而纠正大气传输的挑战.
研究的目的:
- 开发和验证一种用于纠正组合激光雷达系统中的大气传导率的新方法.
- 为了提高大气温度和水蒸气测量的准确性,从地面到相当高的高度.
主要方法:
- 实现一个结合横扫描拉曼散射激光雷达 (LSRSL) 和反向拉曼散射激光雷达 (BWRSL) 系统.
- 开发了一种对大气传导度的校正方法,以考虑波长差异和气溶效应.
- 使用来自LSRSL和BWRSL系统的实时气溶灭绝数据,优化校正功能.
主要成果:
- 经过校正的激光雷达系统在复杂的天气条件下成功测量了高达4.30公里的大气温度和水蒸气.
- 与放射探测器数据相比,温度测量显示偏差小于1.05K.
- 与放射探测器数据相比,水蒸气测量显示的偏差小于0.61g/kg.
结论:
- 联合LSRSL和BWRSL激光雷达系统,以及拟议的大气传导度校正方法,提供了准确的大气分析能力.
- 该系统在复杂的天气条件下表现出稳健性,为气象应用提供可靠的数据.
- 激光雷达技术的进步有助于改善大气监测和理解.
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