1. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing 210044, China;
2. School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China;
3. Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China;
4. Beijing Municipal Environmental Monitoring Center, Beijing 100048, China
In this study, we analyzed the temporal and spatial distribution characteristics of PM2.5 and O3_8h_max in 13cities of Jiangsu province based on the PM2.5 and O3_8h_max data. In addition, we also analyzed the influence of meteorological conditions on O3 concentration. The annual average concentration of PM2.5 in Jiangsu Province showed a decreasing trend from 2014 to 2017, with an average annual reduction of 6.06μg/m3, while O3_8h_max showed an upward trend, with an average annual increase of 3.84μg/m3. On the whole, the monthly variations of PM2.5 showed a "V" pattern, with high concentration appearing in winter and spring and low concentration in summer and autumn. The monthly variations of O3_8h_max showed an irregular "M" pattern, with the maximum concentration in May and then gradually decreased, and it remained steady from July to September, and then gradually decreased. Spatially, the concentration of PM2.5 was higher in western inland cities than in in the eastern coastal cities, whereas O3_8h_max was opposite. The concentration of O3 showed positive correlations with temperature and solar radiation and negative correlation with humidity. Solar radiation was the greatest influence on O3 concentration, followed by temperature and humidity. The concentration of O3 was very probable to exceed the new NAAQS in China while daily average temperature was between 20℃ to 30℃, the relative humidity was between 50% to 70%, and the solar radiation was higher than 150w/m2.
Shu L, Xie M, Gao Da, et al. Regional severe particle pollution and its association with synoptic weather patterns in the Yangtze River Delta region, China[J]. Atmospheric Chemistry and Physics, 2017,17(21):1-31.
Jia M W, Zhao T L, Chen X H, et al. Inverse Relations of PM2.5 and O3 in Air Compound Pollution between Cold and Hot Seasons over an Urban Area of East China[J]. Atmosphere, 2017,8(3):doi:10.3390/atmos8030059.
Pausata F S R, Gaetani M, Messori G, et al. The role of aerosol in altering North Atlantic atmospheric circulation in winter and its impact on air quality[J]. Atmospheric Chemistry and Physics, 2015,65(15):1725-1743.
[9]
Vingarzan R. A review of surface ozone background levels and trends[J]. Atmospheric Environment, 2004,38(21):3431-3442.
[10]
Zhu Z L, Sun X M, Zhao F H, et al. Ozone concentrations, flux and potential effect on yield during wheat growth in the Northwest-Shandong Plain of China[J]. Journal of Environmental Sciences, 2015,34(8):1-9.
[11]
Hu J L, Wang Y G, Ying Q, et al. Spatial and temporal variability of PM2.5 and PM10 over the North China Plain and the Yangtze River Delta, China[J]. Atmospheric Environment, 2014,95(1):598-609.
Lou S J, Liao H, Zhu B, et al. Impacts of aerosols on surface-layer ozone concentrations in China through heterogeneous reactions and changes in photolysis rates[J]. Atmospheric Environment, 2014,85(2):123-138.
[14]
Xiao Z M, Zhang Y F, Hong S M, et al. Estimation of the main factors influencing haze, based on a long-term monitoring campaign in Hangzhou, China[J]. Aerosol & Air Quality Research, 2011,11(7):873-882.
[15]
Wang Z S, Li Y T, Chen T, et al. Changes in atmospheric composition during the 2014 APEC conference in Beijing[J]. Journal of Geophysical Research Atmospheres, 2015,120(24):12695-12707.
Huang Q, Wang T J, Chen P L, et al. Impacts of emission reduction and meteorological conditions on air quality improvement during the 2014 Youth Olympic Games in Nanjing, China[J]. Atmospheric Chemistry and Physics, 2017,17:13457-13471.
[18]
Liu H, Liu S, Xue B R, et al. Ground-level ozone pollution and its health impacts in China[J]. Atmospheric Environment, 2018,173:223-230.
Zhang Q, Yuan B, Shao M, et al. Variations of ground-level O3 and its precursors in Beijing in summertime between 2005 and 2011[J]. Atmospheric Chemistry and Physics, 2014,14(12):6089-6101.
Zhang Y L, Cao F. Fine particulate matter (PM2.5) in China at a city level[J]. Scientific Reports, 2015,5:14884.DOI:10.1038/srep14884.
[27]
Huang F F, Li X, Wang C, et al. PM2.5 spatiotemporal variations and the relationship with meteorological factors during 2013~2014 in Beijing, China[J]. Plos One, 2015,10(11):e0141642.
Huang R J, Zhang Y L, Bozzetti c, et al. High secondary aerosol contribution to particulate pollution during haze events in China[J]. Nature, 2014,514(7521):doi:10.1038/nature13774.
[32]
Zhang Y L, Huang R J, Haddad I E, et al. Fossil vs. non-fossil sources of fine carbonaceous aerosols in four Chinese cities during the extreme winter haze episode of 2013[J]. Atmospheric Chemistry and Physics, 2015,15(3):1299-1312.
[33]
Lu K D, Zhang Y H, Su H, et al. Regional ozone pollution and key controlling factors of photochemical ozone production in Pearl River Delta during summer time[J]. Science China Chemistry, 2010,53(3):651-663.
[34]
Shan W P, Yang P, Lu H X, et al. Influence of coastal wind on surface ozone and nitrogen oxides in suburban Shanghai[J]. Asia-Pacific Journal of Atmospheric Sciences, 2016,52(5):451-458.
[35]
Wentworth G R, Murphy J G, Sills D M L, et al. Impact of lake breezes on ozone and nitrogen oxides in the Greater Toronto Area[J]. Atmospheric Environment, 2015,109:52-60.
[36]
Cheng N L, Li Y T, Zhang D W, et al. Characteristics of Ground Ozone Concentration over Beijing from 2004 to 2015:Trends, Transport, and Effects of Reductions[J]. Atmospheric Chemistry and Physics, DOI:10.5194/acp-2016-508.
[37]
Sicard P, Serra R, Rossello P. Spatiotemporal trends in ground-level ozone concentrations and metrics in France over the time period 1999~2012[J]. Environmental Research, 2016,149:122-144.
Latif M T, Huey L S, Juneng L. Variations of surface ozone concentration across the Klang Valley, Malaysia[J]. Atmospheric Environment, 2012,61:434-445.
[40]
Wang Z S, Li Y T, Chen T, et al. Ground-level ozone in urban Beijing over a 1-year period:Temporal variations and relationship to atmospheric oxidation[J]. Atmospheric Research, 2015,S(164-165):110-117.
[41]
Liu H, Wang X M, Pang J M, et al. Feasibility and difficulties of China's new air quality standard compliance:PRD case of PM2.5 and ozone from 2010 to 2025[J]. Atmospheric Chemistry and Physics, 2013,13(23):12013-12027.
[42]
Chen L J, Wang S, Gong Z Y, et al. Regionalization based on spatial and seasonal variation in ground-level ozone concentrations across China[J]. Journal of Environmental Sciences, 2017,doi.org/10.1016/j.jes.2017.08.011.
