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Shigan Liu, Guannan Geng, Qingyang Xiao, Yixuan Zheng, Xiaodong Liu, Jing Cheng, Qiang Zhang
High Resolution Image Download MS PowerPoint Slide PM 2.5 chemical components play significant roles in the climate, air quality, and public health, and the roles vary due to their different physicochemical properties. Obtaining accurate and timely updated information on China’s PM 2.5 chemical composition is the basis for research and environmental management. Here, we developed a full-coverage near-real-time PM 2.5 chemical composition data set at 10 km spatial resolution since 2000, combining the Weather Research and Forecasting–Community Multiscale Air Quality modeling system, ground observations, a machine learning algorithm, and multisource-fusion PM 2.5 data. PM 2.5 chemical components in our data set are in good agreement with the available observations (correlation coefficients range from 0.64 to 0.75 at a monthly scale from 2000 to 2020 and from 0.67 to 0.80 at a daily scale from 2013 to 2020; most normalized mean biases within ±20%). Our data set reveals the long-term trends in PM 2.5 chemical composition in China, especially the rapid decreases after 2013 for sulfate, nitrate, ammonium, organic matter, and black carbon, at the rate of −9.0, −7.2, −8.1, −8.4, and −9.2% per year, respectively. The day-to-day variability is also well captured, including evolutions in spatial distribution and shares of PM 2.5 components. As part of Tracking Air Pollution in China ( http://tapdata.org.cn ), this daily-updated data set provides large opportunities for health and climate research as well as policy-making in China.
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Liu, S., Geng, G., Xiao, Q., Zheng, Y., Liu, X., Cheng, J., & Zhang, Q. (2022). Tracking Daily Concentrations of PM2.5 Chemical Composition in China since 2000. Environmental Science & Technology, 56(22), 16517–16527. https://doi.org/10.1021/acs.est.2c06510
Liu, Shigan, et al. "Tracking Daily Concentrations of PM2.5 Chemical Composition in China since 2000." Environmental Science & Technology, vol. 56, no. 22, 2022, pp. 16517–16527, https://doi.org/10.1021/acs.est.2c06510.
Liu, Shigan, Guannan Geng, Qingyang Xiao, Yixuan Zheng, Xiaodong Liu, Jing Cheng, and Qiang Zhang. "Tracking Daily Concentrations of PM2.5 Chemical Composition in China since 2000." Environmental Science & Technology 56, no. 22 (2022): 16517–16527. https://doi.org/10.1021/acs.est.2c06510.
Liu S., Geng G., Xiao Q. [и др.] Tracking Daily Concentrations of PM2.5 Chemical Composition in China since 2000 // Environmental Science & Technology. — 2022. — Vol. 56, № 22. — P. 16517–16527. — URL: https://doi.org/10.1021/acs.est.2c06510
@article{liu2022tracking,
title = {{Tracking Daily Concentrations of PM2.5 Chemical Composition in China since 2000}},
author = {Shigan Liu and Guannan Geng and Qingyang Xiao and Yixuan Zheng and Xiaodong Liu and Jing Cheng and Qiang Zhang},
journal = {Environmental Science \& Technology},
year = {2022},
volume = {56},
number = {22},
pages = {16517--16527},
doi = {10.1021/acs.est.2c06510},
url = {https://doi.org/10.1021/acs.est.2c06510}
}TY - JOUR AU - Liu, Shigan AU - Geng, Guannan AU - Xiao, Qingyang AU - Zheng, Yixuan AU - Liu, Xiaodong AU - Cheng, Jing AU - Zhang, Qiang TI - Tracking Daily Concentrations of PM2.5 Chemical Composition in China since 2000 JO - Environmental Science & Technology VL - 56 IS - 22 SP - 16517 EP - 16527 PY - 2022 DA - 2022/11/01 DO - 10.1021/acs.est.2c06510 UR - https://doi.org/10.1021/acs.est.2c06510 ER -
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