Global Multihazard Total Economic Loss Risk Deciles is a 2.5 minute grid of global multihazard
total economic loss risks. First, for each of the considered hazards (cyclones, droughts, earthquakes, floods, landslides, and
volcanoes), subnational distributions of Gross Domestic Product (GDP) are computed using a methodology developed from Sachs et al.
(2003). Where applicable, the ... contributions of subnational units to national GDP estimates, the contribution ratio, are determined
using data of varied origin. World Bank Development Indicators are substituted for GDP estimates of varied origin and the subnational
GDP is estimated using the fore mentioned contribution ratios. A subnational, per capita GDP is derived and a final GDP estimate per
grid cell is made based on grid cell population density. A raw, total economic loss is computed per grid cell using a regional
economic loss rate derived from EM-DAT records. To more accurately reflect the confidence surrounding the economic loss estimate, the
range of losses are classified into deciles, 10 classes of an approximately equal number of grid cells. A multihazard index is
generated by summing the top three deciles of the individual hazards. This dataset is the result of collaboration among the Columbia
University Center for Hazards and Risk Research (CHRR), International Bank for Reconstruction and Development/The World Bank, and
Columbia University Center for International Earth Science Information Network (CIESIN).