Annual 500 m Potential Evapotranspiration (PET) Dataset for the Yangtze River Economic Belt, 2000–2025

The data were generated in Google Earth Engine from the MODIS/061/MOD16A2GF product. The 8-day PET band was multiplied by its scale factor of 0.1 and summed for each calendar year from 1 January to the following 1 January to obtain annual PET.

Values are reported in kg m⁻² yr⁻¹, numerically equivalent to mm yr⁻¹ when interpreted as water depth. Each layer is a single-band 500 m GeoTIFF in EPSG:4326 with float32 values; pixels outside the region are represented by non-finite values, and the GeoTIFFs do not explicitly define a NoData metadata value. Quality checks confirmed a complete 2000–2025 sequence, consistent raster dimensions, geotransforms, projection, and resolution, valid values ranging from 517.40 to 2556.10 kg m⁻² yr⁻¹, annual regional means from 1506.18 to 1591.51 kg m⁻² yr⁻¹, and no valid pixels outside the Yangtze River Economic Belt boundary.