Observed trends in frequency of meteorological droughts (1950-2012; events/decade), Dec. 2016

The raster dataset (grid 0.25° x 0.25°) presents the trends in frequency of meteorological droughts between 1950 and 2012. Trends are based on a combination of three different drought indices - SPI (Standard Precipitation Index), SPEI (Standardized Preciptation Evapotranspiration Index) and RDI (Reconnaisance Drought Index) accumulated over 12-month periods. The dataset contributes to an earlier version of the EEA indicator "Meteorological and hydrological droughts": https://www.eea.europa.eu/data-and-maps/indicators/river-flow-drought-2/assessment