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Cloud Cover Assessment Validation Datasets

By Landsat Missions

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.

Landsat 7 Collection 2

ISB Cloud image.

A cloud validation cloud truth mask validation set created using Landsat 7 Collection 2 images. (July 2022)

L7 Collection 2 Data

Landsat 8 Collection 2

Clouds rolling through the mountaintops at Olympic National Park.

A cloud validation cloud truth mask validation set created using Landsat 8 Collection 2 images. (Sept. 2021)

L8 Collection 2 Data

Additional Validation Datasets

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.

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