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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >The Intercomparison of Satellite-Derived and In Situ Profiles of Droplet Effective Radii in Marine Stratocumulus Clouds
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The Intercomparison of Satellite-Derived and In Situ Profiles of Droplet Effective Radii in Marine Stratocumulus Clouds

机译：海洋层积云中液滴有效半径的卫星和原位剖面比对

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摘要

It was found that the satellite spectral measurements can be used not only for the determination of cloud top effective radii but also for retrieving the effective radii vertical profile in some specific cases (e.g., for low marine stratocumulus clouds with negligible effects of horizontal variability). The inversion algorithm was applied to Moderate Resolution Imaging Spectroradiometer (MODIS) radiances (at the wavelengths of 0.865, 1.24, 1.6, and 2.1 $muhbox{m}$), and the results were validated against in situ airborne measurements of cloud vertical profiles of the effective radius. We found that the results were more reliable for the cases with large vertical gradients of droplet sizes. The new retrieval method, based on the optimal estimation approach, enabled a higher accuracy of the liquid water path estimate than that produced with the standard MODIS vertically homogeneous algorithm.
机译：发现卫星光谱测量不仅可以用于确定云顶有效半径，还可以在某些特定情况下（例如，对于水平变化可忽略不计的低海洋平流层积云）检索有效半径垂直剖面。将该反演算法应用于中等分辨率成像光谱仪（MODIS）的辐射度（波长为0.865、1.24、1.6和2.1时）<公式公式类型=“ inline”> $ muhbox {m} $ < / tex> ），并且针对有效半径的云垂直剖面的原位机载测量对结果进行了验证。我们发现，对于液滴尺寸垂直梯度较大的情况，结果更为可靠。这种基于最佳估计方法的新检索方法比标准MODIS垂直均质算法产生的水路径估计精度更高。

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