Global Flood Mortality Risks and Distribution

The Global Flood Mortality Risks and Distribution is a 2.5 minute grid of global flood mortality risks. Gridded Population of the World, Version 3 (GPWv3) data provided a baseline population per grid cell from which to estimate potential mortality risks due to flood hazard. Mortality loss estimates per flood 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 flood hazard are obtained from the Global Flood Hazard Frequency and Distribution data set. In order to more accurately reflect the confidence associated with the data and the procedures, the potential mortality estimate range is classified into deciles, 10 classes of increasing hazard with an approximately equal number of grid cells per class, producing a relative estimate of flood-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).

《全球洪水死亡率风险及其分布》数据集呈现了全球洪水死亡率风险的2.5分钟网格分布。该数据集以《世界人口网格版，第三版》（Gridded Population of the World, Version 3，简称GPWv3）为基础，提供了每个网格单元的基准人口数据，以此估算洪水灾害可能导致的潜在死亡率风险。针对每次洪水事件造成的死亡率损失估算，采用了涵盖1981年至2000年20年间区域特定灾害死亡率记录的紧急事件数据库（Emergency Events Database，简称EM-DAT）。洪水灾害的频率和分布数据来源于《全球洪水灾害频率与分布》数据集。为了更精确地反映数据及方法的置信度，潜在死亡率估算范围被划分为十等分，即10个递增风险等级，每个等级包含大致相等的网格单元数量，从而产生基于洪水风险的相对估算。本数据集是哥伦比亚大学灾害与风险评估研究中心（Columbia University Center for Hazards and Risk Research，简称CHRR）、国际重建与发展银行/世界银行（International Bank for Reconstruction and Development/The World Bank）以及哥伦比亚大学国际地球科学信息网络中心（Columbia University Center for International Earth Science Information Network，简称CIESIN）合作的结果。