ERA5 radiation grid data for Jiudao and Mengu stations

The grid radiation data used in the study is sourced from the European Centre for Medium-Range Weather Forecasts (ECMWF) ERA5 reanalysis dataset. ERA5 represents ECMWF's fifth-generation atmospheric reanalysis of global climate, which combines model data with observational data from around the world to form a comprehensive and consistent dataset on a global scale. The horizontal resolution is 0.1°×0.1°, and the data covers the period from January 2000 to December 2020, totaling 21 years of data. Grid data from two stations, Jiudao and Mengu, were selected. 2. Land use type data: Based on Landsat TM/ETM/OLI remote sensing imagery, remote sensing information extraction methods were employed to obtain land cover classification data covering Fangxian County with a horizontal resolution of 30m, including eight categories (farmland, forest, grassland, shrubland, wetland, water body, construction land, and wasteland).