Effect of the Shutdown of a Coal-Fired Power Plant on Urban Ultrafine Particles and Other Pollutants

Figures & data

FIG. 1 Map of the locations of the sampling site, the major roadways, and the emission sources in Rochester, NY.

TABLE 1 Summary of the contribution percentage of each factor to the pollutants concentrations.

	Nucleation (%)	Regional transport (%)	Traffic (%)	CFPP (%)	O3-rich (%)
10–50 nm	88.8	0.4	0.0	1.5	9.4
50–100 nm	22.7	0.0	63.8	6.8	6.7
100–500 nm	0.0	25.9	60.3	2.8	10.9
CO	21.1	20.5	26.5	2.9	29.0
PM2.5	0.0	84.8	0.0	3.9	11.3
SO2	5.3	6.6	0.0	88.0	0.0
O3	2.9	0.0	0.9	0.0	96.2
BC	7.3	57.4	35.3	0.0	0.0

FIG. 2 Annual variations of contributions of the CFPP to UFP and other pollutants. Box-Whisker plot indicates median and 25/75% quartiles (boxes), mean (dash line), 10/90% quartiles (whiskers), and 5/95% quartiles (dots).

FIG. 3 Comparison of the directionalities of the CFPP factor contribution to the UFP and other pollutants. The black line represents 2007 data. The grey line represents 2009 data.