Marine aerosols affect the climate directly and indirectly as well as serving as tracers of biogenic processes. Here we present the results from size-segregated and bulk aerosol samples collected from 2nd August to 10^th October 2015 during the US GEOTRACES Arctic Ocean (GN01) expedition. Samples were analyzed for concentrations of major water-soluble organic and inorganic species, including acetate, formate, methanesulfonate (MSA), oxalate, propionate, chloride, nitrate, sulfate and major cations (Na⁺, K⁺, Mg²⁺, Ca²⁺, NH₄⁺). Back-trajectory analysis was performed to categorize the wind patterns into three types; type 1, originating from the North Pacific and the Bering Sea, type–2, consisting entirely of marine Arctic air, and type 3, consisting of marine Arctic air mixed with air masses from the surrounding continents. Sea-salt was the major aerosol component, dominating in the coarse mode, 1.8–5.6 μm. Non-sea-salt sulfate and MSA were predominantly present in the fine mode, 0.18–0.32 μm, and MSA was associated with type 1 and type 2 air masses. The results from this study provide useful information on the origins and chemical processes involving these aerosol species over the Arctic in summer and help elucidate the significance of natural sources as contributors for the formation of cloud condensation nuclei.

海洋气溶胶直接和间接影响气候，并作为生物过程的示踪剂。在这里，我们提出从8月2日收集到的10大小分离和体积气溶胶样品的结果^届美国GEOTRACES北冰洋（GN01）考察期间2015年10月。分析样品中主要水溶性有机和无机物质的浓度，包括乙酸盐、甲酸盐、甲磺酸盐 (MSA)、草酸盐、丙酸盐、氯化物、硝酸盐、硫酸盐和主要阳离子（Na ⁺、K ⁺、Mg ²⁺、Ca ^{2 +} , NH ₄ ⁺）。进行反向轨迹分析以将风模式分为三种类型；类型 1，源自北太平洋和白令海，类型 2，完全由北极海洋空气组成，类型 3，由北极海洋空气与周围大陆的气团混合组成。海盐是主要的气溶胶成分，在粗模式中占主导地位，1.8-5.6 微米。非海盐硫酸盐和 MSA 主要以精细模式存在，0.18-0.32 μm，MSA 与 1 型和 2 型气团有关。这项研究的结果提供了有关夏季北极上空这些气溶胶物种的起源和化学过程的有用信息，并有助于阐明自然资源作为云凝结核形成贡献者的重要性。