On the submicron aerosol distributions and CCN number concentrations in and around the Korean Peninsula

摘要: Abstract. Total number concentrations of particles having a diameter larger than 10 nm (NCN), cloud condensation nuclei at several supersaturation (S) values (NCCN) and size distributions with 10–414 were measured in Seoul between 2004 2010. Overall average NCN geometric mean 17 811 ± 5581 cm−3 48 6 nm. Average NCCN 0.4, 0.6 0.8% S 4145 2016, 5323 2453 6067 2780 corresponding / 0.26 0.11, 0.33 0.11 0.37 0.12. There is clear seasonal variation aerosol concentration, which seems to be due the monsoon. are also found depend on volume traffic height planetary boundary layer, respectively. During aircraft campaigns 2009 2011, 0.6% (N0.6%) around Korean Peninsula. 2011 campaign, scattering coefficient was measured. N0.6% lower altitudes generally higher altitudes, except for cases when particle formation growth events thought occur altitudes. show positive correlation coefficients but this correspondence tends vary altitude. Occasional instances low ( With combination current relevant previous studies, composite map Peninsula produced. Overall, exhibited typical over polluted regions elsewhere globe. Moreover, there decreasing trend from west east region, implying that region constantly under dominant influence continental outflow.