Updated 2.0 to biointertidal mapper software: A satellite approach for NDVI-based intertidal habitat mapping

BioIntertidal Mapper 2.0 is a user-friendly tool with a graphical user interface that automates Sentinel-2 processing (since 2017) for intertidal habitat mapping in Google Earth Engine (GEE) using the Normalized Difference Vegetation Index (NDVI). Unlike version 1.0, low-tide scenes are no longer selected using the WorldTides API; instead, images are screened by estimating the proportion of water pixels using the Normalized Difference Water Index. Reflectance inputs were updated to the Sentinel-2 Harmonized dataset. GEE authentication was simplified, the interface refined, and exports expanded to include RGB imagery alongside filtered NDVI products saved to Google Drive. The software enables rapid, reproducible operational mapping for scientists and coastal managers.