> Generally mapping bare ground beyond the specific established tags mentioned earlier is often hard without local knowledge. Imagery taken during dry season will often read like bare ground while there is often fairly extensive plant growth (like natural=grassland) that dries up and looks indistinguishable from bare ground even on high resolution imagery.
The local, regional, or global Copernicus time series datasets are specifically meant to overcome this. https://land.copernicus.eu/global/products/ "The Water Bodies product detects the areas covered by inland water along the year providing the maximum and the minimum extent of the water surface as well as the seasonal dynamics. The area of water bodies is identified as an Essential Climate Variable (ECV) by the Global Climate Observing System (GCOS)." The global ones are built of higher resolution datasets with variable accessibility. Like the JRC’s Global Surface Water (MWE-GSW) Dataset at https://global-surface-water.appspot.com/map ... "...location and temporal distribution of water surfaces at the global scale over the past 3.6 decades, and provides statistics on their extent and change ..." I did a cursory look-see at several places in the Western U.S. Basin and Range region using only the ROI preview capability in the portal , especially Sevier Lake in Utah ( most of these 'lakes' tend to be of a single type, though ) . In combination with other Copernicus and NASA datasets one can get a fair idea what's going on. Your mileage may vary. Michael Patrick <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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