Wu B, Lu D
Appl Opt. 1988 Dec 1;27(23):4899-906. doi: 10.1364/AO.27.004899.
A backward Monte Carlo computation procedure has been used to simulate the intensity and degree of polarization of the twilight sky during 1977. It was found that the single scattering approximation is applicable for detection of stratospheric aerosols by twilight measurement during background periods. Based on the simulation, a scheme is proposed for retrieving the stratospheric aerosol scattering coefficient utilizing the measured degree of polarization at the 0.7-microm wavelength in the zenith direction of the twilight sky. Compared with the in situ measurement, both the retrieved total optical depth and the retrieved profile of the aerosol scattering coefficient below 30 km agree reasonably well with measurements.
采用反向蒙特卡罗计算程序对1977年暮光天空的强度和偏振度进行了模拟。结果发现，在背景时期通过暮光测量探测平流层气溶胶时，单次散射近似是适用的。基于该模拟，提出了一种利用在暮光天空天顶方向0.7微米波长处测得的偏振度来反演平流层气溶胶散射系数的方案。与现场测量相比，反演得到的总光学厚度以及30公里以下气溶胶散射系数的反演廓线与测量结果相当吻合。
