ChinaHighPM1: Big Data Seamless 10 km Ground-level PM1 Dataset for China

ChinaHighPM1 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 10 km (i.e., D10K, M10K, and Y10K) ground-level PM1 dataset in China from 2013 to 2020. This dataset yields a high quality with a cross-validation coefficient of determination (CV-R2) of 0.83 and a root-mean-square error (RMSE) of 9.25 µg m-3 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 ChinaHighPM1 dataset (Version 3) is available at: https://doi.org/10.5281/zenodo.3538555 More CHAP datasets of different air pollutants can be found at: https://weijing-rs.github.io/product.html