West Africa Coastal Vulnerability Mapping: Gridded Subset of Sub-national Poverty and Extreme Poverty Prevalence

The West Africa Coastal Vulnerability Mapping: Gridded Subset of Sub-national Poverty and Extreme Poverty Prevalence represents the HarvestChoice Subnational Poverty and Extreme Poverty Prevalence data set as a one kilometer raster, and includes values within 200 kilometers of the coast. Poverty levels affect the "defenselessness" of populations in the low elevation coastal zone. These data were developed by the Harvest Choice project funded by the Bill and Melinda Gates Foundation. Harvest Choice measured 2005 poverty levels using 2005 purchasing power parity data for two thresholds: $1.25/day and $2/day international poverty lines. The $2/day threshold was selected for this mapping exercise.

西非沿海脆弱性制图：分区域贫困与极端贫困发生率栅格（raster）子集，是将HarvestChoice分区域贫困与极端贫困发生率数据集转化为1公里分辨率栅格格式的产物，覆盖沿海200公里范围内的所有栅格数值。贫困水平会影响沿海低海拔区域人口的‘抗风险脆弱性’。该数据集由比尔及梅琳达·盖茨基金会资助的HarvestChoice项目研发。HarvestChoice以2005年购买力平价（Purchasing Power Parity, PPP）数据为支撑，针对1.25美元/日与2美元/日两条国际贫困线标准，测算得到了2005年的贫困水平。本次制图任务选用了2美元/日的贫困线阈值。