Some pictures are shown which described the aerosol optical depth (AOD) distribution over Beijing.
给出了描述北京地区气溶胶光学厚度分布的几幅图片。
Variation and distribution characteristics of aerosol optical depth (AOD) and solar radiation in China, and the AOD retrieval method from broadband solar radiation were main goals in this paper.
我国气溶胶光学厚度（AOD）和太阳辐射长期以来的分布与变化特征，以及如何从宽带太阳辐射反演气溶胶光学厚度是本文的研究重点。
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