Abstract. Despite recent advancements in cloud processing and modelling and the increasing availability of high spectral- and temporal- resolution satellite imagery, mapping the spatial distribution of crop types remains a challenging task. Here, we present CROPGRIDS – a comprehensive global, geo-referenced dataset providing information on areas for 173 crops circa the year 2020, at a resolution of 0.05° (~5.55 km at the equator). It represents a major update of the Monfreda et al. (2008) dataset, the most widely used geospatial dataset previously available, covering 175 crops with reference year 2000 at 10 km spatial resolution. CROPGRIDS updates Monfreda et al. (2008) through the careful evaluation of 26 published gridded datasets covering more recent crop information at regional, national, and global levels, largely over the period 2015–2020. The new product successfully updates the area extent for 80 of the 175 crops originally covered, representing an update to 1.2 billion hectares of crop area (i.e., 81 % of the total cropland included in CROPGRIDS). CROPGRIDS carries forward the crop type maps originally in Monfreda et al. (2008) for 93 crops as more recent information for these crops is not available. We compared CROPGRIDS harvested area of individual crops against independent national and subnational data from 36 National Statistical Offices (NSOs), national-level crop area data for more than 180 countries and territories from FAOSTAT, as well as geospatially, against a newly available high-resolution (30 m) cropland agreement map (Tubiello et al., 2023). Results indicated robustness against the available independent information, with CROPGRIDS world total harvested and crop areas around 1.5 billion hectares. To the best of our knowledge, CROPGRIDS represents the most comprehensive update of previous work on the subject area, offering a new benchmark of global gridded harvested and crop area data for the year circa 2020. CROPGRIDS dataset can be downloaded at https://doi.org/10.6084/m9.figshare.22491997 (Tang et al., 2023).

中文翻译：

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CROPGRIDS：2020 年左右 173 种作物的全球地理参考数据集

摘要。尽管最近在云处理和建模方面取得了进展，并且高光谱和时间分辨率卫星图像的可用性不断提高，但绘制作物类型的空间分布图仍然是一项具有挑战性的任务。在这里，我们展示了 CROPGRIDS——一个全面的全球地理参考数据集，提供大约 2020 年 173 种作物的面积信息，分辨率为 0.05°（赤道约 5.55 公里）。它代表了 Monfreda 等人的重大更新。(2008) 数据集，以前使用最广泛的地理空间数据集，涵盖 175 种作物，参考年份为 2000 年，空间分辨率为 10 公里。CROPGRIDS 更新 Monfreda 等人。(2008) 通过仔细评估 26 个已发布的网格数据集，这些数据集涵盖了区域、国家和全球层面的最新作物信息，主要是在 2015-2020 年期间。新产品成功更新了最初涵盖的 175 种作物中 80 种的面积范围，相当于更新了 12 亿公顷的作物面积（即 CROPGRIDS 中包含的总农田面积的 81%）。CROPGRIDS 继承了 Monfreda 等人最初的作物类型地图。(2008) 93 种作物，因为没有关于这些作物的最新信息。我们将 CROPGRIDS 单个作物的收获面积与来自 36 个国家统计局 (NSO) 的独立国家和地方数据、来自 FAOSTAT 的 180 多个国家和地区的国家级作物面积数据以及地理空间数据与新近可用的高-分辨率 (30 m) 农田协定图 (Tubiello et al., 2023)。结果表明对可用独立信息的稳健性，CROPGRIDS 全球总收割面积和作物面积约为 15 亿公顷。据我们所知，CROPGRIDS 代表了该主题领域先前工作的最全面更新，提供了大约 2020 年全球网格收获和作物面积数据的新基准。CROPGRIDS 数据集可在 https://doi 下载.org/10.6084/m9.figshare.22491997（Tang 等人，2023 年）。