Shipborne observations reveal contrasting Arctic marine, Arctic terrestrial and Pacific marine aerosol properties

摘要: Abstract. There are few shipborne observations addressing the factors influencing the relationships of formation and growth aerosol particles with cloud condensation nuclei (CCN) in remote marine environments. In this study, the physical properties throughout Arctic Ocean and Pacific were measured aboard Korean icebreaker R/V Araon during the summer 2017 for 25 d. A number new particle (NPF) events frequently observed both terrestrial and Arctic air masses. By striking contrast, NPF events not detected in Pacific Three major categories therefore discussed: (1)  (aerosol concentration CN 2.5 : 413±442  cm −3 ), (2) Arctic (CN 1622±1450 ) (3) Pacific 397±185 following mass back-trajectory analysis. conclusion of study is only that a source of secondary relative to but also that open-ocean sympagic terrestrially influenced coastal ecosystems both contribute shaping size distributions. We suggest terrestrial ecosystems – including river outflows tundra strongly affect aerosol emissions areas, possibly more than anthropogenic Arctic emissions. The increased discharge, emissions and melting sea ice should be considered future atmospheric composition climate simulations. average CCN concentrations at a supersaturation ratios 0.4 % 35±40 , 71±47 204±87 marine, Arctic terrestrial categories, respectively. Our results aim help evaluate how anthropogenic natural atmospheric sources processes composition cloud properties.