Potential evapotranspiration (PET) and reference evapotranspiration (ETo) are estimated using the Priestley-Taylor equation and the Penman-Monteith method, respectively (Mecikalski and others, 2018), at an approximately 2-kilometer (approximately 0.019 degrees longitude and 0.018 degrees latitude) spatial grid and daily time-step from January 1, 2025 to December 31, 2025 for the State of Florida. Daily PET and ETo were computed from solar insolation, meteorological data (min/max temperature, min/max relative humidity, and mean wind speed at 2-meter height), and shortwave blue-sky albedo data. Solar insolation was computed from Geostationary Operational Environmental Satellite (GOES) sensor data; blue-sky albedo was computed from the Moderate Resolution Imaging Spectrometer (MODIS) MCD43A1 BRDF/Albedo data product; and meteorological data were interpolated to the 2-kilometer grid using inverse-distance weighting of weather stations data maintained by the Florida Automated Weather Network (FAWN), the South Florida Water Management District (SFWMD), and the Georgia Automated Environmental Monitoring Network (GaAEMN).
