Spatial and Temporal Distributions of Air Pollutants and Size Distribution of Aerosols over Central and Eastern China

Abstract

The origins and spatial and temporal distributions of air pollutants (PM, PM, CO, SO, NO and O) during May to June of 2015 were investigated using data from 1490 monitoring sites in China. Aerosol number concentrations and meteorological data from Shijiazhuang, Nanjing, and Suzhou were combined with the MIX Asian emission data and the HYSPLIT model. Furthermore, the diurnal variation, size distribution, and main sources of air pollutants and aerosols were selectively characterized in the North China Plain (NCP) and the Yangtze River Delta (YRD). High values of particulate matter concentrations (PM), including PM and PM, occurred in the northwestern and central regions of eastern China. Elevated PM and PM concentrations represented natural dust sources and anthropogenic resident, power plant, industry, and traffic emissions sources, respectively. The concentrated distributions of SO were similar to those of PM. The CO concentrations were distributed uniformly in China. High O values occurred above the Qinghai province. During the observation period, the air masses mainly originated from the northwest NCP and from the southwest or northeastern ocean in the YRD, resulting in high concentrations of PM, PM, SO, and CO in the NCP, the average values of which were 61.8 ± 40.0, 118.8 ± 66.4, 24.1 ± 24.6 μg m, and 1.2 ± 0.9 mg m, respectively, and were 1.2, 1.4, 1.5, and 1.3 times larger than those in the YRD. NO had higher concentrations in the YRD with an average of 43.7 ± 24.8 μg m, which was 1.2 times larger than that in the NCP. The diurnal variations of PM, NO and CO had bimodal distributions and SO and O had unimodal distributions in the NCP and YRD. The aerosol number concentrations had average values of 12,661 ± 5266, 11,189 ± 5905, and 12,797 ± 5931 cm in Shijiazhuang, Nanjing, and Suzhou. Their diurnal variations displayed trimodal peaks at 18:00-21:00, 11:00-14:00, and 06:00-08:00, and their spectra distributions were all unimodal with peaks at 60-70, 60-70, and 100-110 nm, respectively.

SO2 and Aerosol Evolution over the Very Clear Atmosphere at the Argentina Andes Range Sites of San Antonio de Los Cobres and El Leoncito

“…In order to compare, we present typical results in other parts of the world, in particular in Eastern-Central China. The mean results obtained by Wang et al [13] are the followings: 12,661, 11,189 and 12,797 particles/cm 3 for Shijiazhuang, Nanjing and Suzhou, respectively.…”

“…Other implications of SO2 and sulfate aerosol propagations for the air quality as well as for possible environmental and economical consequences have been described in the works of Yeh et al [13] and Wang et al [14].…”

Distribution and Potential Sources of Surface Aerosol Particles in the Yangtze River Delta Region, China

“…[1][2][3] Many studies have investigated the aerosol mass concentrations and optical properties in the YRD. [4,5] Ming et al reported distinctive seasonal trends of the PM 2.5 concentrations in the YRD. [6] That is, the PM 2.5 concentrations in the YRD are higher in winter and lower in summer.…”

“…[ 1–3 ] Many studies have investigated the aerosol mass concentrations and optical properties in the YRD. [ 4,5 ] Ming et al. reported distinctive seasonal trends of the PM 2.5 concentrations in the YRD.…”

Observation and Source Apportionment of Trace Gases, Water-Soluble Ions and Carbonaceous Aerosol During a Haze Episode in Wuhan

“…Hence, the pollution situation of the air environment in the YRMR is becoming increasingly serious [22][23][24]. As we know, regional haze pollution is closely related to the meteorological conditions, geographical location (e.g., the proximity to a sea or lake), terrain, economic development, and human population [1,[25][26][27]. The sources of aerosol over the THB, are comprised of primary and secondary aerosols from local and surrounding areas and are intricate due to the dense emission sources of ships, traffic, and agriculture, and complex meteorological conditions [24].…”