GlobalHighPM2.5: Big Data Gapless 1 km Global Ground-level PM2.5 Dataset over Land

GlobalHighPM_2.5 is one of the series of long-term, full-coverage, global high-resolution and high-quality datasets of ground-level air pollutants over land (i.e., GlobalHighAirPollutants, GHAP). It is generated from 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 dataset contains input data, analysis codes, and generated dataset used for the following article, and if you use the GlobalHighPM_2.5 dataset for related scientific research, please cite the below-listed corresponding reference (Wei et al., NC, 2023):

• Wei, J., Li, Z., Lyapustin, A., Wang, J., Dubovik, O., Schwartz, J., Sun, L., Li, C., Liu, S., and Zhu, T. First close insight into global daily gapless 1 km PM_2.5 pollution, variability, and health impact. Nature Communications, 2023, 14, 8349. https://doi.org/10.1038/s41467-023-43862-3

Input Data

Relevant raw data for each figure (compiled into a single sheet within an Excel document) in the manuscript.

Code

Relevant Python scripts for replicating and ploting the analysis results in the manuscript, as well as codes for converting data formats.

Generated Dataset

Here is the first big data-derived gapless (spatial coverage = 100%) monthly and yearly 1 km (i.e., M1K, and Y1K) global ground-level PM_2.5 dataset over land from 2017 to 2022. This dataset yields a high quality with cross-validation coefficient of determination (CV-R²) values of 0.91, 0.97, and 0.98, and root-mean-square errors (RMSEs) of 9.20, 4.15, and 2.77 µg m^-3 on the daily, monthly, and annual basises, respectively.

Due to data volume limitations, 

        all (including daily) data for the year 2022 is accessible at: GlobalHighPM2.5 (2022)

        all (including daily) data for the year 2021 is accessible at: GlobalHighPM2.5 (2021)

        all (including daily) data for the year 2020 is accessible at: GlobalHighPM2.5 (2020)

        all (including daily) data for the year 2019 is accessible at: GlobalHighPM2.5 (2019)

        all (including daily) data for the year 2018 is accessible at: GlobalHighPM2.5 (2018)

        all (including daily) data for the year 2017 is accessible at: GlobalHighPM2.5 (2017)

        Continuously updated...

More air quality datasets of different air pollutants can be found at: https://weijing-rs.github.io/product.html