Miffre Alain, Anselmo Christophe, Geffroy Sylvain, Fréjafon Emeric, Rairoux Patrick
Opt Express. 2015 Feb 9;23(3):2347-60. doi: 10.1364/OE.23.002347.
Carbon aerosol is now recognized as a major uncertainty on climate change and public health, and specific instruments are required to address the time and space evolution of this aerosol, which efficiently absorbs light. In this paper, we report an experiment, based on coupling lidar remote sensing with Laser-Induced-Incandescence (LII), which allows, in agreement with Planck's law, to retrieve the vertical profile of very low thermal radiation emitted by light-absorbing particles in an urban atmosphere over several hundred meters altitude. Accordingly, we set the LII-lidar formalism and equation and addressed the main features of LII-lidar in the atmosphere by numerically simulating the LII-lidar signal. We believe atmospheric LII-lidar to be a promising tool for radiative transfer, especially when combined with elastic backscattering lidar, as it may then allow a remote partitioning between strong/less light absorbing carbon aerosols.
碳气溶胶现已被公认为是气候变化和公众健康方面的一个主要不确定因素，需要特定仪器来研究这种能有效吸收光的气溶胶的时空演变。在本文中，我们报告了一项基于将激光雷达遥感与激光诱导白炽（LII）相结合的实验，该实验依据普朗克定律，能够获取城市大气中数百米高度范围内吸光颗粒发出的极低热辐射的垂直剖面。相应地，我们设定了LII - 激光雷达形式体系和方程，并通过对LII - 激光雷达信号进行数值模拟，探讨了LII - 激光雷达在大气中的主要特征。我们认为大气LII - 激光雷达是辐射传输方面一种很有前景的工具，特别是与弹性后向散射激光雷达结合使用时，因为这样可能实现对强/弱吸光碳气溶胶的远程区分。
