NetCDF水资源提取与聚合

This script extracts hydrological variables (e.g., <i>qtot</i>, <i>qs</i>, <i>qg</i>, <i>airruse</i>) from NetCDF (.<code>nc</code>) 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 (<i>qtot</i>, <i>qs</i>, <i>qg</i>, <i>airruse</i>).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.

本脚本从网络通用数据格式（NetCDF，后缀为.nc）文件中提取水文变量（如qtot、qs、qg、airruse），并将其处理为中国省级尺度的年度水资源指标。其工作流程包括：读取NetCDF文件并选取目标变量（qtot、qs、qg、airruse）；将月度数据转换为年度总量；借助GeoJSON边界文件将网格尺度的数值映射至中国各省级行政区；按省级行政区聚合计算结果，并结合省级区域面积数据进行校正调整；将最终生成的省级年度数据集导出为CSV格式。