ChinaHighSO2: Big Data Seamless 1 km Ground-level SO2 Dataset for China

ChinaHighSO2 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 big data-derived seamless (spatial coverage = 100%) daily, monthly, and yearly 1 km (i.e., D1K, M1K, and Y1K) ground-level SO2 dataset in China since 2019 to present. This dataset yields a high quality with a cross-validation coefficient of determination (CV-R2) of 0.84, a root-mean-square error (RMSE) of 10.07 µg m-3, and a mean absolute error (MAE) of 4.68 µg m-3 on a daily basis. If you use the ChinaHighSO2 dataset for related scientific research, please cite the corresponding reference (Wei et al., ACP, 2023), and the reference will be updated once our new paper is accepted: Wei, J., Li, Z., Wang, J., Li, C., Gupta, P., and Cribb, M. Ground-level gaseous pollutants (NO2, SO2, and CO) in China: daily seamless mapping and spatiotemporal variations. Atmospheric Chemistry and Physics, 2023, 23, 1511–1532. https://doi.org/10.5194/acp-23-1511-2023 Note that the ChinaHighSO2 dataset is also available for periods before 2019, but with a spatial resolution of 10 km: all (including daily) data for the years 2013-2018 is accessible at: https://doi.org/10.5281/zenodo.4641538 Continuously updated... More CHAP datasets of different air pollutants can be found at: https://weijing-rs.github.io/product.html