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首页> 外文期刊>Tellus, Series B. Chemical and Physical Meteorology >Validation of multi-angle imaging spectroradiometer aerosol products in China
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Validation of multi-angle imaging spectroradiometer aerosol products in China

机译：中国多角度成像光谱仪气雾剂产品验证

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摘要

Based on AErosol RObotic NETwork and Chinese Sun Hazemeter Network data, the Multi-angle Imaging SpectroRadiometer (MISR) level 2 aerosol optical depth (AOD) products are evaluated in China. The MISR retrievals depict well the temporal aerosol trend in China with correlation coefficients exceeding 0.8 except for stations located in northeast China and at the Lanzhou site. In general, the MISR AOD retrievals agree well with ground-based observations for AOD < 0.5. The retrievals are systematically underestimated for AOD > 0.5 in the east, southwest and northeast regions of China. Concerning surface types, the greatest underestimations occur in farmland and forest ecosystems. The largest and smallest biases are seen in spring and in summer, respectively. The systematic underestimation seems to stem from the use of too high single scattering albedos similar to 0.96 which is significantly higher than those estimated from ground-based observations. Further improvements to the MISR aerosol algorithm, especially in the aerosol model, are recommended.
机译：基于AErosol机器人网络和中国太阳浊度仪网络数据，在中国对多角度成像光谱辐射仪（MISR）2级气溶胶光学深度（AOD）产品进行了评估。 MISR反演结果很好地描述了中国的时间气溶胶趋势，除了位于中国东北和兰州站点的站点外，相关系数超过了0.8。一般而言，MISR AOD检索与AOD <0.5的地面观测非常吻合。在中国东部，西南和东北地区，当AOD> 0.5时，系统地低估了这些检索结果。关于地表类型，最大的低估发生在农田和森林生态系统中。在春季和夏季分别出现最大和最小偏差。系统性的低估似乎是由于使用了太高的，类似于0.96的单散射反照率而引起的，该反照率明显高于基于地面观测的估计值。建议进一步改进MISR气溶胶算法，尤其是在气溶胶模型中。

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