Lidar estimation of stratospheric aerosol properties: Surface, volume, and extinction to backscatter ratio
Lidar estimation of stratospheric aerosol properties: Surface, volume, and extinction to backscatter ratio
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平流层气溶胶特性的激光雷达估计：表面、体积和消光与后向散射比
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
G. Gobbi
中科院分区：
文献类型：
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作者：
G. Gobbi
提出了一种利用单波长激光雷达测量值估算平流层气溶胶表面积、体积和消光比的方法。连接这些变量的函数关系的基础上发现的一个大的气溶胶分布和组合物的平均散射特性。由此产生的模型占硫酸盐气溶胶类型，从背景到火山，在环境条件下，代表了全球平流层下部的大部分。表面积的相关误差范围在10%至45%之间，体积和消光与后向散射比估计值的相关误差范围在15%至35%之间。这些值稍大，但与原位粒子计数器的特征值相当。扩展的方法来解释极地平流层云观测和卫星消光测量进行了讨论。激光雷达后向散射在532 nm和1020 nm的卫星消光之间的关系进行了评估。
A method for estimating stratospheric aerosol surface area, volume, and extinction to backscatter ratio from single-wavelength lidar measurements is presented. Functional relationships linking these variables are found on the basis of average scattering properties of a large set of aerosol distributions and compositions. The resulting model accounts for sulfate aerosol types, ranging from background to volcanic, in environmental conditions representative of most of the global lower stratosphere. Relevant errors range between 10 and 45% for surface area and between 15 and 35% for volume and extinction to backscatter ratio estimates. These values are slightly larger but comparable to those characterizing in situ particle counters. An extension of the method to the interpretation of both polar stratospheric cloud observations and satellite extinction measurements is discussed. The relationships between lidar backscatter at 532 nm and satellite extinction at 532 and at 1020 nm are evaluated.