Global Flood Proportional Economic Loss Risk Deciles

The Global Flood Proportional Economic Loss Risk Deciles is a 2.5 minute grid of flood hazard economic loss as proportions of Gross Domestic Product (GDP) per analytical Unit. Estimates of GDP at risk are based on regional economic loss rates derived from historical records of the Emergency Events Database (EM-DAT). Loss rates are weighted by the hazard's frequency and distribution. The methodology of Sachs et al. (2003) is followed to determine baseline estimates of GDP per grid cell. To better reflect the confidence surrounding the data and procedures, the range of proportionalities is classified into deciles, 10 class of an approximately equal number of grid cells of increasing risk. 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).

全球洪水比例经济损失风险十分位数数据集系由2.5分钟格网构成，用于表示洪水灾害经济损失与国内生产总值（GDP）之比例，并针对分析单元进行计算。该数据集对风险经济损失的估计，基于历史紧急事件数据库（EM-DAT）中得出的区域经济损失比率。损失比率按照灾害的频率及分布进行加权。数据集采用Sachs等人（2003年）的方法论，以确定每个网格单元的GDP基准估计值。为更准确地反映数据及流程的置信度，比例范围被划分为十分位数，即约等数量的网格单元，按风险程度递增。该数据集为哥伦比亚大学灾害与风险研究中心（CHRR）、国际复兴开发银行/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）合作研究成果。