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Cloud Cover Assessment Validation Datasets

Landsat Cloud Cover Assessment (CCA) validation datasets are comprised of satellite imagery and accompanying cloud truth masks that specify which Landsat pixels in a scene are cloudy or clear, or have other conditions such as cloud shadow.

The cloud truth masks were created manually by operators digitizing clouds by hand using image-editing software.  These cloud truth masks are essential for validating existing CCA algorithms and can also be used to train new cloud detection algorithms. 

Information about the C Function of Mask (CFMask) Algorithm 

Historical cloud truth masks are listed below.