Study of generation and circulation of ocean origin materials by the aircraft observation

许多种类的微量污染物从海洋排放到大气中。其中硫化物和氮化物是重要的。大气中的二甲硫化物被OH自由基氧化，转化为SO_2和甲磺酸（MSA）。这些物质最后转化为硫酸（H_2SO_4）并构成大气气溶胶。这一反应过程被船舶和飞机观测到。结果表明，在公海上空的大气中存在一个特征性的硫环流系统。氧化亚氮（N_2O）也通过硝化和反硝化反应排放到大气中。湖泊的观测结果表明，N_2O在无氧层中积极生成。类似的过程也可能出现在海洋中。南极气溶胶的浓度和成分随季节变化。在夏季，气溶胶来源于环大陆海洋中产生的DMS。

Many kinds of minor continuents are emitted from the ocean to the atmosphere. Sulpher compounds and nitrogen compounds are important among them.Dimethylsulfide in the atmosphere is oxidized by OH radicals and is changed to SO_2 and methanesulfonic acid (MSA). These are finally changed to sulpheric acid (H_2SO_4) and compose of atmospheric aerosols. This reaction process is observed by the ships and airplanes. The results demonstrate that a characteristic sulpher circulation system exists in the atmosphere over the open ocean. Nitrous oxide (N_2O) is also emitted to the atmosphere through nitrification and denitrification reactions. The observations in the lakes show that N_2O is actively generated in the no oxigen layer. The similar process is likely to appear in the ocean.Antarctic aerosols change seasonally in concentration and component. In summer aerosols are originated from DMS generated in the circum-continental ocean.