Satellite-Derived Global Waterline Dataset with Environmental Forcings (1993-2019)

It includes cross-shore waterline variations at ~0.27° alongshore resolution worldwide, associated with key environmental drivers at each location. The waterline data were extracted and quality-controlled from the publicly available Landsat archive.

Time series were subsequently sptially and temporally aggregated, over 3° and 3 month, to better resolve regional seasonal and interannual variability in the waterline position. In addition to waterline position (X), the dataset includes environmental forcing variables known to influence coastal dynamics: Significant wave height (Hs) Peak wave period (Tp) Wave direction (Dir) River discharge (m³/s) Sea level anomaly (SLA), including altimetric regional sea level and storm surge corrections (DAC) All variables are provided as monthly time series from January 1993 to December 2019 and spatially matched to waterline sampling locations, defined by latitude and longitude coordinates.