A 1 km Monthly Multi-Timescale SPEI Dataset for Mainland China Reconstructed from Station Observations and Multi-Source Environmental Predictors
High-resolution multi-timescale SPEI data are important for drought monitoring and climate-impact studies, but long-term high-resolution datasets remain limited over large regions. This study developed and technically validated a station-supervised monthly multi-timescale SPEI dataset for mainland China from 1979 to 20...