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A first look at band-differenced angular signatures for cloud detection from MISR

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2 Author(s)
Di Girolamo, L. ; Dept. of Atmos. Sci., Univ. of Illinois, Urbana, IL, USA ; Wilson, M.J.

We present the first observational study on the potential of band-differenced angular signatures for cloud detection. A band-differenced angular signature is the reflectance difference between the blue and near-infrared channels examined as a function of view angle, and it is observed in this study from the Multi-angle Imaging SpectroRadiometer (MISR). The observed band-differenced angular signatures over a variety of scene types qualitatively compare well with previously published theoretical predictions. Examples of cloud detection in polar and desert regions using band-differenced angular signatures from MISR are shown to highlight its contribution to cloud detection in areas where traditional spectral techniques tend to perform poorly.

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:41 ,  Issue: 7 )