[Variation of O Concentration in Different Regions of Beijing from 2006-2015].

O continuous monitoring data for the Dingling, Guanyuan, Liulihe, and Qianmen sites from 2006-2015 were analyzed to investigate concentration levels, variation trends, temporal variations, and relationships with precursors and meteorological factors. The results showed that the ten year average concentrations of O at the Dingling site were the highest at 65.2 μg·m, followed by concentrations at Liulihe (53.

[Impact of Gusty Northwesterly Winds on Biological Particles in Winter in Beijing].

Biological aerosol particles play a crucial role in cloud formation and succession of ecosystems and have a large impact on human health. However, the variations in the concentration, composition, and viability of biological particles remain unclear. This study, conducted in January 2013 and January 2015 in Beijing, explores the influence of meteorological conditions on the variations in the concentration and composition of biological particles.

[Characteristics of Ozone Background Concentration in Beijing from 2004 to 2015].

Based on the hourly O monitoring data from 2004 to 2015 of Beijing, a comprehensive discussion on the characteristics of O concentration at a background station Dingling in Beijing was conducted. The results showed that the annual concentration of O1h was increasing with a growth rate of 4.40 μg·m while the annual concentration of O8h was decreasing with annual average rates of -1.

[Characterizing Beijing's Airborne Bacterial Communities in PM2.5 and PM1 Samples During Haze Pollution Episodes Using 16S rRNA Gene Analysis Method].

During 8th-14th Jan., 2013, severe particulate matter (PM) pollution episodes happened in Beijing. These air pollution events lead to high risks for public health.