Aqueduct Global Flood Risk Maps Data

The Aqueduct Global Flood Risk Maps provide current and future river flood risk estimates in urban damage, affected GDP, and affected population by country, river basin, and state.

The datasets in these maps include current and future river flood risk estimates in urban damage, affected GDP, and affected population by country, river basin, and state.

For the current scenario, we used hydrological data from 1960 through 1999 for generating flood inundations for 9 return periods, from 2-year flood to 1000-year flood, and 2010 GDP, population, and land use data for assessing flood impacts.

For future projections, we used 5 GCMs (Global Climate Models) from CMIP5 (Coupled Model Intercomparison Project Phase 5) projecting future flood inundations under two climate scenarios, RCP4.5 (Representative Concentration Pathway) and RCP8.5, and projected socio-economic changes using SSP2 (Shared Socio-economic Pathway) and SSP3, from the Intergovernmental Panel on Climate Change Assessment Report 5.

水道（Aqueduct）全球洪水风险地图提供了按国家、流域及行政单元划分的当前与未来河流洪水风险评估结果，评估维度涵盖城市洪涝损失、受影响国内生产总值（GDP）及受影响人口规模。
该地图集所依托的数据集，同样包含按国家、流域及行政单元划分的当前及未来河流洪水风险评估数据，涵盖城市洪涝损失、受影响GDP与受影响人口三类指标。
针对当前基准情景，研究团队采用1960年至1999年的水文数据，生成了从2年一遇到1000年一遇共9个重现期的洪水淹没范围，并以2010年的GDP、人口与土地利用数据开展洪水影响评估。
针对未来情景预测，研究团队采用耦合模式比较计划第五阶段（Coupled Model Intercomparison Project Phase 5，CMIP5）中的5个全球气候模式（Global Climate Models，GCMs），模拟了典型浓度路径4.5（Representative Concentration Pathway，RCP4.5）与典型浓度路径8.5（RCP8.5）两种气候情景下的未来洪水淹没范围；同时基于政府间气候变化专门委员会第五次评估报告（Intergovernmental Panel on Climate Change Assessment Report 5）中的共享社会经济路径2（Shared Socio-economic Pathway，SSP2）与共享社会经济路径3（SSP3），对社会经济变化进行了预估。