gridMET Drought
Datasets:
- gridMET Drought Indices
Description: The gridMET drought indices are computed using the daily gridMET dataset (which is a surface meteorological dataset based on PRISM and NLDAS-2). The drought indices computed are for the standardized indices of SPI, SPEI and EDDI and the Palmer Drought Severity Index (PDSI) and Palmer Z-Index. The methods used to compute these indices from gridMET are described here.
Organization: University of California Merced (UCM)
Website: gridMET Website
Google Earth Engine:
Spatial resolution: 4-km grid (1/24-deg)
Time Span: 1979 to Present (updated every 5 days with a 4-9 day lag)
Variables:
- Palmer Drought Severity Index (PDSI)
- Palmer Z-Index (Z)
- Standardized Precipitation Index (SPI) (14,30,60,90,180-day, 1,2,5-year)
- Standardized Precipitation Evapotranspiration Index (SPEI) (14,30,60,90,180-day, 1,2,5-year)
- Evaporative Demand Drought Index (EDDI) (14,30,60,90,180-day, 1,2,5-year)
- Short and Long Term Drought Blends (Computed by Climate Engine)
Terms of Use:
- CC BY 4.0
References:
- Abatzoglou J. T. "Development of gridded surface meteorological data for ecological applications and modelling". International Journal of Climatology. (2011) doi: 10.1002/joc.3413.(Abstract)