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Polygon spatial files detail lake and pond extents for four Alaskan subregions, including three boreal forest areas and one tundra region. Water bodies were detected using a U-Net deep learning model applied to 3.125-meter resolution PlanetScope imagery from the snow-free periods of 2019-2021. The dataset provides both 3-year composites and monthly climatological composites for the boreal regions.
License is specified as 'other-license-specified'; users must check the specific terms. Data is provided as shapefiles within ZIP archives. Composite water files indicate water presence in >40% of valid observations for a given time-slice.