Volatile Sulfur Compounds : Ocean Fluxes and Reaction Processes in the Atmosphere

这项研究的目的是阐明硫磺的全球循环过程。在宫川湾、名古屋市和和歌沙湾三个地点进行了基于地面的观测。与庆应义塾大学合作，在樱花天文台进行了NOx、臭氧和气象因子的同步观测，时间为Mikawa日。此外，我们还进行了飞行器实验。为了弄清多种硫化物在大气中的迁移和反应过程，我们用气相色谱方法同时测定了多种硫化物。结果表明，该方法对于研究不同来源的化合物，如海洋、陆地和人类活动等复杂的迁移和反应过程是很好的。与以往的报道相反，在海拔更高的地方(4公里)观测到的DMS浓度比2公里高。对该过程的气溶胶测量和气象要素进行了分析，总结出气溶胶和气体化合物除了垂直扩散和水平流动外，还存在一个从海平面到自由对流层的快速输送过程。这一过程似乎在挥发性硫化物的全球循环中非常重要。

The purpose of this research is to clarify the global circulation process of sulfur. The gound based observation were practiced at three sites, Mikawa bay, Nagoya city, and Wakasa bay. In cooperation with Keio University, simultaneous observations of NOx, ozone, and meteorological factor were carried out at Sakusima Observatory, in Mikawa day. Additionally, aircraft experiment were also carried out.We have measured many kinds of sulfur compounds simultaneously by the gas chromatography method, in order to clarify the transport and reaction process of them in the atmosphere.It became clear that the method is good for investigation of complex processes of transport and reaction including different origin compounds, for example, marin, land, and human work.We found the very interesting case on the vertical profile of dimethylsulfide (DMS). Higher concentration of DMS at higher altitude (4 km), comparing with that for 2 km, was observed, against previous reports. The analyzes on the aerosol mesurements and meteorological factors were investigated for that case.Summarlizing the research, it can be concluded that there is one rapid transport process for aerosols and gas compounds from sea level to free troposphere by vertical purtabation in addition to vertical diffusion and horizontal flow. This process seems to be very impotant in the global circulation of volatile sulfur compounds.