Ind on the heating season is mixedis driven by rasterized 48 h. To analyze

Ind on the heating season is mixedis driven by rasterized 48 h. To analyze the backward trajectory, the HYSPLIT model with EBC transportation in Xuzhou. Also, the northwestern region supplies the mainFigure 7 shows the meteorological information (International Information Assimilation System; GDAS1). EBC contribution; the EBC contributionthe the nonheating season reaching Pyrrolnitrin manufacturer Xuzhou abovesurrounding area clustering benefits of of 48-h retreat trajectory primarily comes in the 1500 m. Figure 7a compared six clustering sources of EBC throughout the heating season. There have been four observedin shows the using the heating season. Air high-quality is extra closely related towards the clusters concentrations. These trajectories indicate 0.90 ) and 1 China, the Beijing ianjin ebei the northwest (19.14 , six.76 , 20.72 , and that central cluster in the north (28.15 ). There area and cluster within the southwest region are Along with 24.32 in the southwestern was also a the Yangtze River Delta (24.32 ). the main prospective sources of the Xuzhou EBC. sources, the remaining 75.68 with the sources are in the northwestern region of Xuzhou.Figure 7. Cluster evaluation of 48-h backward air mass trajectories arriving at Xuzhou atat 1500 m above 7. Cluster analysis of 48-h backward air mass trajectories arriving at Xuzhou 1500 m above the ground just about every 6 h: (a) the heating season; (b) the nonheating season. each six h: (a) the heating season; (b) the nonheating season.Figure 7bshows the PSCF graph generated by the hourly contribution data, which eight shows the 6 cluster sources of EBC in the nonheating season, four inside the north (5.71 , 16.14 , 20.67 , 30.71 ) the entire year (Figure 8a, the heatingcentered on Xuzhou. constitutes the 50th percentile of and 2 within the south (ten.53 , 16.24 ), season (Figure 8b), plus the nonheating season (Figure 8c). Only of 73.23 in the pollution sources came from the trajectory is radially distributed. A totalback trajectories with hourly EBC concentrathe northern region, 103 ng/m are integrated. The region is divided into a grid cell area tions bigger than 3.00and 26.77 from the pollution sources came from the southern array ofof Xuzhou. Xuzhou belongs to the Xuzhou is climate zone and experiences northwest winds 0.5 0.five The supply of EBC in monsoon concentrated in northwest and central China, and northeast winds in the spring and winter and southeast winds and southwest winds which includes western Shandong, southern Hebei, northern Henan Province, southern Shanxi inside the summer season and autumn. Owing to the influence of Mongolia. Throughout the heating Province, northern Shaanxi Province and western Inner the monsoon within the air on EBC transportation, the north wind of is heating season is mixed with central areas will be the season, the frequency of pollutionthehigher, plus the northwest and EBC transportation in Xuzhou. Also, the northwestern area supplies the main EBC contribution; the EBC primary sources of pollution. The EBC emissions in these places are high, which contributes contribution of EBC throughout the heating season in Xuzhou. the surrounding region in comparison to the measuredthe nonheating season mainly comes from Throughout the nonheating season, together with the heating season. Air high-quality is a lot more closely relatedthe the observed concentrations. the general pollution frequency dropped drastically, and to source was evenly distributed all through Xuzhou.Atmosphere 2021, 12,11 ofThese trajectories indicate that central China, the Beijing ianjin ebei region along with the Yangtze River Delta region a.