NetCDF水资源提取与聚合

This script extracts hydrological variables (e.g., qtot, qs, qg, airruse) from NetCDF (.nc) files and processes them into annual water resource indicators at the provincial level in China. The workflow includes:Reading NetCDF files and selecting the target variable (qtot, qs, qg, airruse).Converting monthly data into annual sums.Mapping grid-based values to Chinese provinces using a GeoJSON boundary file.Aggregating results by province and adjusting with provincial area data.Exporting the final annual provincial dataset to CSV format.