Global dataset of drought events (1991-2020) from a multi-index 3D clustering

This dataset includes drought events detected with the 3D clustering algorithm described in Cammalleri and Toreti (2023) applied to 3 drought indices:SPI-1SPI-3SWA Each map reports the ID of the drought events according to the clustering, so cells with the same ID correspond to the same drought event. The text file summarize some statistics of the major droughts:ID = unique identifierstart = initial dekad od the event (progressie, starting from 01-1991)end = final dekad of the event (progressing, starting from 01-1991) size = total area under drought (in pixels)y_cen = vertical posizion of the centroid (in pixels, starting from upper left)x_cen = horizontal posizion of the centroid (in pixels, starting from upper left)t_cen = temporal posizion of the centroid (in dek, starting from 01-1991)