Standardized Precipitation-Evapotranspiration Index for western United States, 2001-2014, derived from gridMET climate estimates

These data are 30m by 30 m grids of the mean Standardized Precipitation-Evapotranspiration Index (SPEI) between 2001-2014 in the western United States. The SPEI index...本数据集为美国西部2001年至2014年间标准化降水蒸散指数（Standardized Precipitation-Evapotranspiration Index, SPEI）的均值数据，其空间格式为30米×30米的网格。该SPEI指数……