Documentation for the Food Insecurity Hotspots Data Set

This document outlines the methodology and data sets used to construct the Food Insecurity Hotspots Data Set, along with use cases, limitations, and use constraints. The Food Insecurity Hotspots Data Set, Version 1 (2009-2019) consists of grids at 250 meter (~7.2 arc seconds)resolution that identify the level of intensity and frequency of food insecurity over the 10 years between 2009 and 2019, as well as hotspot areas that have experienced consecutive food insecurity events. The gridded data are based on sub-national food security analysis provided by FEWS NET (Famine Early Warning Systems Network) in five (5) regions, including Central America and the Caribbean, Central Asia, East Africa, Southern Africa, and West Africa. Based on the Integrated Food Security Phase Classification (IPC), food insecurity is defined as Minimal, Stressed, Crisis, Emergency, and Famine.本文件阐述了粮食不安全热点数据集（Food Insecurity Hotspots Data Set）的构建方法与所用数据集，同时涵盖其应用场景、局限性及使用约束。该数据集版本1（2009-2019年）采用分辨率为250米（约7.2角秒）的格网数据，用于识别2009至2019年十年间粮食不安全的强度与发生频率，同时标记出曾连续发生粮食不安全事件的热点区域。此类格网数据基于饥荒早期预警系统网络（Famine Early Warning Systems Network, FEWS NET）在五个区域开展的次国家级粮食安全分析，涉及区域包括中美洲及加勒比地区、中亚、东非、南部非洲与西非。依据综合粮食安全阶段分类（Integrated Food Security Phase Classification, IPC）标准，粮食不安全被划分为轻度、警戒、危机、紧急与饥荒五个等级。