Global Drought Mortality Risks and Distribution

The Global Drought Mortality Risks and Distribution is a 2.5 minute grid of global drought mortality risks. Gridded Population of the World, Version 3 (GPWv3) 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 data set. 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. This data set 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).

全球干旱死亡率风险及其分布数据集，以2.5分钟网格形式呈现全球干旱死亡率风险。世界人口网格化数据集，第三版（GPWv3）提供了每个网格单元人口基线的估算，据此可估算由于干旱灾害导致的潜在死亡率风险。每个灾害事件的死亡率损失估算采用1981年至2000年间的区域特定灾害死亡率记录，这些记录来源于紧急事件数据库（EM-DAT）。干旱灾害的频率和分布数据来自全球干旱灾害频率和分布数据集。为了更精确地反映数据及程序相关的置信度，潜在死亡率估算范围被划分为十等分，即10个风险逐渐增加的类别，每个类别具有大致相等的网格单元数，从而产生基于干旱的死亡率风险的相对估算。本数据集是哥伦比亚大学灾害与风险研究中心（CHRR）、国际重建与发展银行/世界银行以及哥伦比亚大学国际地球科学信息网络中心（CIESIN）合作的结果。