C2 DSWE INTSM and INWAM bands erroneously classify water pixels as not water example

Under low solar illumination condition where water pixels are flagged as shaded in the MASK band (SHADE ≤ Otsu threshold), the Landsat Collection 2 Dynamic Surface Water Extent (DSWE) INTSM and INWAM bands may erroneously classify the water pixels as "Not Water". The issue mainly impacts the open ocean waters that are not covered by the land cover mask, as shown in this example. In clear sky condition (see Cloud and Shadow bits in MASK), the INTR band will provide a more accurate interpretation for these pixels.

Visit the Collection 2 DSWE webpage for more information.