ChinaHighO3: Big Data Full-coverage Ground-level MDA8 O3 L2 Daily 0.1 Deg Product

ChinaHighO₃ 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 big data (e.g., ground-based measurements, satellite remote sensing products, atmospheric reanalysis, and emission inventory) using artificial intelligence by considering the spatiotemporal heterogeneity of air pollution. This is the Big Data Level 2 (L2) daily 0.1 degree (≈ 10 km) gridded <strong>full-coverage</strong> ground-level maximum 8-hour average (MDA8) O₃ products in China (CHAP_O3_D10K) from 2013 to 2020. This dataset has high accuracy with a cross-validation coefficient of determination (CV-R²) of 0.87 and a root-mean-square error (RMSE) of 17.10 µg m^-3 on a daily basis. If you use the ChinaHighO₃ dataset for related scientific research, please cite the corresponding reference (Wei et al., RSE, 2022). <strong>Note that this dataset is continuously updated, and if you need a longer period or higher temporal-resolution (e.g., daily, monthly) data, please contact the first author.</strong> <strong>Our manuscript is just accepted in <em>Remote Sensing of Environment</em> and all the data will be made publicly available online once the paper is published.</strong>