Daily SPEI dataset in China from 1980 to 2100

The daily Standardized Precipitation Evapotranspiration Index (SPEI) dataset used the PM-CO2 model to calculate PET is with a spatial resolution of 0.5° × 0.5° from 1980 to 2100. This dataset investigates drought, focusing on the region of China, using simulations from five global climate models (GCMs) under three Shared Socioeconomic Pathways (SSP1-2.6, SSP3-7.0, and SSP5-8.5）participating in the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP3b).

本数据集为逐日标准化降水蒸散指数（Standardized Precipitation Evapotranspiration Index, SPEI）数据集，采用PM-CO₂模型计算潜在蒸散量（Potential Evapotranspiration, PET），空间分辨率为0.5°×0.5°，时间跨度为1980年至2100年。该数据集聚焦中国区域的干旱研究，采用参与跨部门影响模型比对项目（Inter-Sectoral Impact Model Intercomparison Project, ISIMIP3b）的5个全球气候模式（Global Climate Models, GCMs）在3种共享社会经济路径（SSP1-2.6、SSP3-7.0及SSP5-8.5）下的模拟结果构建而成。