Source apportionment of marine atmospheric aerosols in northern South China Sea during summertime 2018

Comment on egusphere-2024-956

“…The average mass concentration of NR-PM1 was 3.60 μg m -3 in summer and significantly increased to 18.11 μg m -3 in winter. However, this summer concentration was much lower than the concentrations (9.11 μg m -3 and 10.65 μg m -3 ) measured in similar summer periods of 2018 and 2019 in the northern SCS (Liang et al, 2021;Sun et al, 2023). As aforementioned, the particle number concentrations were higher in summer than in winter when the atmosphere was primarily influenced by terrestrial air masses.…”

Characterization, Sources, and Chemical Processes of Submicron Aerosols at a Mountain Site in Central China

“…The PNSD data in a mobility diameter range of 20–600 nm particles were selected for the size PMF analysis. The uncertainties associated with PNSD were estimated according to Equation (Ogulei et al., 2007), which was employed in several studies (J. Cai et al., 2020; Du et al., 2017; B. Liang et al., 2021): $$${\sigma }_{ij}={C}_{1}\times \left({X}_{ij}+\overline{{X}_{j}}\right)+{C}_{2}\times {X}_{ij}$$$ where σ ij represents the estimated uncertainty of the particle number concentration ( X ij ), and $$\overline{{X}_{j}}$$ represents the mean X ij in the j th size bin. The coefficients, C 1 (0.01) and C 2 (0.1) were taken from B. Liang et al.…”

Traffic, marine ships and nucleation as the main sources of ultrafine particles in suburban Shanghai, China

“…71 The PNSD of marine ship emissions is reported in the range of 25-60 nm, 61,62 which is in line with the PNSD of N ′ 3. Liang et al 72 conducted cruise observations in the South China Sea and found that marine ship emissions accounted for about 44% of PNC 500 . Previous investigations have shown that coastal port cities are highly susceptible to the impact of UFPs emissions from ships, and the highest contribution to PNC can reach 65-70%.…”