ChinaHighPM2.5: MODIS/Terra+Aqua 1 km Ground-level PM2.5 Dataset for China (Closed)

ChinaHighPM2.5 is one of the series of long-term, full-coverage, high-resolution, and high-quality datasets of ground-level air pollutants for China (i.e., ChinaHighAirPollutants, CHAP). It is generated from the big data (e.g., ground-based measurements, satellite remote sensing products, atmospheric reanalysis, and model simulations) using artificial intelligence by considering the spatiotemporal heterogeneity of air pollution. This is the MODIS/Terra+Aqua daily 1 km (D1K) ground-level PM2.5 dataset in Eastern China from 2013 to 2020, and this dataset yields a high quality with average cross-validation coefficient of determination (CV-R2) values ranging from 0.86 to 0.90, and RMSE values ranging from 10.0 to 18.4 μg/m3 on a daily basis. Note that this dataset is closed access since a longer-term (2000-2021), seamless, high-resolution (1 km), and higher quality ChinaHighPM2.5 dataset (Version 4) is available at: http://doi.org/10.5281/zenodo.3539349 More CHAP datasets of different air pollutants can be found at: https://weijing-rs.github.io/product.htmlChinaHighPM2.5 是中国区域地面大气污染物数据集系列（ChinaHighAirPollutants，缩写CHAP）中的一款长期、全覆盖、高分辨率且高质量的数据集。该数据集依托地面观测、卫星遥感产品、大气再分析资料及模式模拟等大数据，结合大气污染的时空异质性，通过人工智能方法生成。 本数据集为2013至2020年华东地区MODIS/Terra+Aqua每日1千米（D1K）分辨率地面PM2.5数据集，整体质量优异，日均交叉验证决定系数（CV-R²）介于0.86至0.90之间，均方根误差（Root Mean Square Error, RMSE）为10.0至18.4 μg/m³。 请注意，本数据集为受限获取数据集，因更长期（2000-2021年）、无缝化、高分辨率（1千米）且更高质量的ChinaHighPM2.5数据集（第4版）可通过以下链接获取：http://doi.org/10.5281/zenodo.3539349 更多不同大气污染物的CHAP系列数据集可访问：https://weijing-rs.github.io/product.html