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Laboratory measurements of spectral reflection from ice clouds of various habits

机译:各种习惯的冰云的光谱反射的实验室测量

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Spectral light from 550 to 650 nm reflected from the surface of an ice cloud produced in a temperature-controlled column is measured at seven different angles between 16.7 deg and 29.9 deg. Cloud optical depth (tau) is determined from the extinction of a 670 nm laser and is corrected for forward scattering using a Monte Carlo ray-tracing algorithm. Reflection measurements are compared to expectations from a plane-parallel radiative transfer model with input parameters based on the measured tau and a phase function for the observed ice crystal types. The plane-parallel radiative transfer model can be used to interpret the measured reflection for tau less than about 0.4 for this particular experiment, ideal for providing a validation data set to assist with the development of satellite bidirectional remote sensing.
机译:从温度控制柱中产生的冰云表面反射的550至650 nm光谱光是在16.7度和29.9度之间的七个不同角度进行测量的。云的光学深度(tau)由670 nm激光的消光确定,并使用蒙特卡洛射线追踪算法进行正向散射校正。将反射测量值与来自平面平行辐射传递模型的期望值进行比较,并根据输入的参数基于所测得的tau和所观测到的冰晶类型的相位函数。对于该特定实验,可以使用平面平行辐射传输模型来解释tau小于约0.4的实测反射,非常适合提供验证数据集以协助卫星双向遥感的发展。

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