Factors Influencing New Atmospheric Particle Formation in Ordos During Summer and Autumn 2019

被引：0

作者：

Kong X.-C. ^{[1
,2
]}

Wang H.-L. ^{[2
]}

Zhang L.-X. ^{[1
]}

Hu Q. ^{[1
]}

Li R.-F. ^{[1
]}

Xu C.-Q. ^{[1
]}

机构：

[1] Ordos Meteorological Bureau of Inner Mongolia, Ordos

[2] Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing

来源：

Huanjing Kexue/Environmental Science | 2020年 / 41卷 / 12期

关键词：

Air mass; Meteorological element; New particle formation(NPF); Ordos; Size distribution;

D O I：

10.13227/j.hjkx.202004212

中图分类号：

学科分类号：

摘要：

In this study, the aerosol number size distribution in the range of 10 nm-10 μm was collected from August 16 to October 04, 2019 at Ordos using a wide-range particle spectrometer (WPS). Combined with PM (PM2.5 and PM10), pollution gases, meteorological data, and the HYSPLIT model, the characteristics and impact factors of new particle formation (NPF) were discussed. The results indicated that there were 19 NPF events during the observation period, which have different effects on diurnal variation in aerosol number concentration in different modes. The NPF events caused a sharp increase in the number concentration of nucleation and Aitken mode aerosols, but had little effect on the number concentration of accumulation and coarse mode aerosols. The temperature, wind speed, and total solar radiation during NPF days were usually higher than those in non-NPF days, and the RH during NPF days was lower. On NPF days, the mass concentrations of PM2.5, PM10, CO, and NO2 were lower than those on non-NPF days, while the mass concentrations of O3 and SO2 were higher. NPF events were observed in 40.0% of northern air masses and 29.6% of southern air masses. There were significant differences in meteorological elements in different NPF event air mass types. The southern NPF event air mass type had the lowest wind speed and the highest RH, with averages of (2.4±1.5) m•s-1and (48.8±10.8)%, respectively. The northern NPF event air mass type had the highest wind speed and total solar radiation, with averages of (4.2±1.9) m•s-1 and (664.5±255.6) W•m-2, respectively. The western air mass type of NPF event had the lowest RH, with an average of (29.8±12.7)%. The formation rates of new particles in the different air mass types of NPF events were similar, ranging from 1.5 to 1.8 cm-3•s-1. The largest growth rate was (12.7±13.6) nm•h-1 in the southern NPF event air mass type, which was 1.2 times and 1.4 times higher than the NPF events of northern air masses and western air masses. © 2020, Science Press. All right reserved.

引用

页码：5295 / 5305

页数：10

共 47 条

[1] Kulmala M, Vehkamaki H, Petaja T, Et al., Formation and growth rates of ultrafine atmospheric particles: a review of observations, Journal of Aerosol Science, 35, 2, pp. 143-176, (2004)
[2] Guo S, Hu M, Zamora M L, Et al., Elucidating severe urban haze formation in China, Proceedings of the National Academy of Sciences of the United States of America, 111, 49, pp. 17373-17378, (2014)
[3] Lee S H, Gordon H, Yu H, Et al., New particle formation in the atmosphere: From molecular clusters to global climate, Journal of Geophysical Research: Atmospheres, 124, 13, pp. 7098-7146, (2019)
[4] Hu M, Shang D J, Guo S, Et al., Mechanism of new particle formation and growth as well as environmental effects under complex air pollution in China, Acta Chimica Sinica, 74, 5, pp. 385-391, (2016)
[5] Kulmala M., Atmospheric science: how particles nucleate and grow, Science, 302, 5647, pp. 1000-1001, (2003)
[6] Kulmala M, Kontkanen J, Junninen H, Et al., Direct observations of atmospheric aerosol nucleation, Science, 339, 6122, pp. 943-946, (2013)
[7] Guo S, Hu M, Peng J F, Et al., Remarkable nucleation and growth of ultrafine particles from vehicular exhaust, Proceedings of the National Academy of Sciences of the United States of America, 117, 7, pp. 3427-3432, (2020)
[8] Yue D L, Hu M, Zhang R Y, Et al., Potential contribution of new particle formation to cloud condensation nuclei in Beijing, Atmospheric Environment, 45, 33, pp. 6070-6077, (2011)
[9] Williamson C J, Kupc A, Axisa D, Et al., A large source of cloud condensation nuclei from new particle formation in the tropics, Nature, 574, 7778, pp. 399-403, (2019)
[10] Aitken J., Ⅲ.-On some nuclei of cloudy condensation, Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 39, 1, pp. 15-25, (1900)

← 1 2 3 4 5 →