Influence of Regional Pollution Outflow on Particle Number Concentration and Particle Size in Airshed of Guangzhou, South China
نویسندگان
چکیده
A measurement campaign of particle number concentration and size distribution was conducted at urban (SYSU) suburban (Panyu) areas Guangzhou, South China, during 16 January to 3 February 2020 before the Chinese New Year (CNY) holiday. Average (PNC) 6.3 × 103 cm-3 9.7 cm-3, respectively, sites, indicating severe particulate matter (PM) pollution. The PNC in region influenced by monsoon land–sea breeze systems. During seasons, PM pollution occurred a regional scale affecting as indicated high correlation (r value = 0.70), but PNCs were lower than that land-sea period (with PNCM1/PNCLSB1 PNCM2/PNCLSB2 ratios) due higher atmospheric dispersion. There is strong local emission (mainly vehicular emissions) both which significantly lowered CNY reduced human activities. found be emissions (dominated Aitken mode particles) new formation (NPF) process nucleation particles). NPF event associated with N10-25/H2SO4 proxy ratio low wind speed condition.
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ژورنال
عنوان ژورنال: Aerosol and Air Quality Research
سال: 2022
ISSN: ['2071-1409', '1680-8584']
DOI: https://doi.org/10.4209/aaqr.220097