Global Drought Mortality Risks and Distribution is a 2.5 by 2.5
minute grid of global drought mortality risks. Gridded Population of
the World (GPW) Version 3 (beta) data provide a baseline estimation
of population per grid cell from which to estimate potential
mortality risks due to drought hazard. Mortality loss estimates per
hazard event are calculated using regional, hazard-specific mortality
records of the Emergency Events Database (EM-DAT) that span the 20
years between 1981 and 2000. Data regarding the frequency and
distribution of drought hazard are obtained from the Global Drought
Hazard Frequency and Distribution dataset. In order to more
accurately reflect the confidence associated with the data and
procedures, the potential mortality estimate range is classified into
deciles, 10 classes of increasing risk with an approximately equal
number of grid cells per class, producing a relative estimate of
drought-based mortality risks. The dataset is a result of the
collaboration among the Center for Hazards and Risk Research (CHRR),
International Bank for Reconstruction and Development/The World Bank,
and the Columbia University Center for International Earth Science
Information Network (CIESIN).