WorldCereal open global harmonized reference data repository (CC-BY-SA licensed data sets)

Within the<strong> ESA funded</strong> WorldCereal project we have built an open harmonized reference data repository at global extent for model training or product validation in support of land cover and crop type mapping. Data from 2017 onwards were collected from many different sources and then harmonized, annotated and evaluated. These steps are explained in the harmonization protocol (10.5281/zenodo.7584463). This protocol also clarifies the naming convention of the shape files and the WorldCereal attributes (LC, CT, IRR, valtime and sampleID) that were added to the original data sets. This publication includes those harmonized data sets of which the original data set was published under the CC-BY-SA license or a license similar to CC-BY-SA. See document "_In-situ-data-World-Cereal - license - CC-BY-SA.pdf" for an overview of the original data sets.在欧洲空间局（ESA）资助的WorldCereal项目中，我们构建了覆盖全球的开放统一参考数据集仓库，用于支撑土地覆盖与作物类型制图的模型训练或产品验证工作。2017年及之后的数据从多源渠道采集后，均经过统一化处理、标注与评估流程。上述步骤已在统一化规范（10.5281/zenodo.7584463）中详细说明。该规范同时明确了形状文件的命名规则，以及添加至原始数据集的WorldCereal属性项：土地覆盖（LC）、作物类型（CT）、灌溉标识（IRR）、验证时间（valtime）与样本ID（sampleID）。本出版物收录的统一化数据集，其原始数据集均采用CC-BY-SA许可协议或与之类似的许可协议发布。有关原始数据集的整体概况，请参阅文档"_In-situ-data-World-Cereal - license - CC-BY-SA.pdf"。