Abstract Fine particulate matter (PM 2.5) is a severe air pollution problem in China.
Observations of PM 2.5 have been available since 2013 from a large network operated by …

From 2013 to 2017, with the implementation of the toughest-ever clean air policy in China,
significant declines in fine particle (PM2. 5) concentrations occurred nationwide. Here we …

The contribution of meteorology and emissions to long-term PM 2.5 trends is critical for air
quality management but has not yet been fully analyzed. Here, we used a combination of …

As major chemical components of airborne fine particulate matter (PM 2.5), organic carbon
(OC) and elemental carbon (EC) have vital impacts on air quality, climate change, and …

Following the implementation of the strictest clean air policies to date in Beijing, the
physicochemical characteristics and sources of PM 2.5 have changed over the past few …

Understanding the relationship between air quality, pollution emission control measures,
and meteorological conditions is important for developing effective air quality improvement …

Whether PM 2.5 can be long-range transported and what role secondary inorganic aerosols
play in the episodes of haze have aroused numerous debates. In this work, Multi-layer …

To investigate the variations of PM 2.5 and O 3 and their synergistic effects with influencing
factors at different time scales, we employed Bayesian estimator of abrupt seasonal and …

Using hourly observations of fine particulate matter (PM2. 5) from a nationwide air-quality
monitoring network of nearly 1500 stations, augmented with gridded atmospheric reanalysis …

The spatiotemporal variation of the aerosol optical depth (AOD) over China was studied
using MODIS data retrieved with the MAIAC algorithm. Time series were extended to July …