A study on Emission Mechanism of Biogenic Sulfur from the Ocean by using Remoto Sensing and its influence to Global Climate Change

Marine biogenic sulfur compounds、DMS （CH-D23-D2SCH-D2）、and MeSH（CH-D23-D2SH）、are emitted from the sea and oxidized to sulfate aerosol。它是以CCN （Cloud Condensation Nuclei）为基础的。因此， DMS和MeSH对全球气候变化产生了影响。COS也是平流层中硫气醇的主要来源。These sulfur compounds relate to DMSP （（CH？D23？D2）？D2 S？D1+？D2 CH？D2 COO？D1） and DMSO （CH？D23？D2 SOCH？D2） in the ocean and react with radicals to be oxidized to sulfate in the atmosphere。在这一研究中，有两个主题在下面的研究中被调查为基于生物质硫循环。1）开发环境中硫化合物的自动监测系统， 2）了解海洋环境中生物硫化合物的行为，我们的两个部分监测系统考虑;冷陷阱（0.5克的Chromosorb 107装在玻璃管中）和气体 ... More 带火焰照相探测器的色谱仪。硫磺化合物在海上和空气集中在冷陷阱中，然后他们被注射到GC和由FPD确定的。由于所有的分析过程都是由一个序列器控制的，这个系统可以在一小时的间隔内成功地分析海鲜和海上空气中的硫化合物。通过使用我们的监测系统，野外测量被运送到许多海洋区域;米川湾（Saku Island， 1992-1999年），太平洋0 cean，印度海洋，赤道海洋，北极（研究船，“HAKUHO-MARU”，1992年， 1993年， 1994年， 1996年， 1997年，“Mirai”，1999年），以及其他。关于海洋环境中的硫酸化合物的许多重要信息。沿海地区的平均DMS、COS、MeSH集中于511纳克/升（n=1014）、88纳克/升（n=1053）、150纳克/升（n =193）和69纳克/升（n =1146）、19纳克/升（n=519）、15纳克/升（n=15）。在海员中，硫酸化合物的每一个集中与海洋初级生产力高度相关。Less（低）

Marine biogenic sulfur compounds, DMS (CHィイD23ィエD2SCHィイD23ィエD2), and MeSH(CHィイD23ィエD2SH), are emitted from the sea and oxidized to sulfate aerosol. It is considered to act as CCN (Cloud Condensation Nuclei). Therefore, DMS and MeSH have influence on the global climate change. COS is also a main source of sulfur aerosol in the stratosphere. These sulfur compounds relate to DMSP ((CHィイD23ィエD2)ィイD22ィエD2SィイD1+ィエD1CHィイD22ィエD2CHィイD22ィエD2COOィイD1-ィエD1) and DMSO (CHィイD23ィエD2SOCHィイD23ィエD2) in the ocean and react with radicals to be oxidized to sulfate in the atmosphere. In this study, two subjects shown in the following were investigated to understand the biogenic sulfur cycle. 1) Development of automatical monitoring system for sulfur compounds in the environment, 2) Understanding of behavior of biogenic sulfur compounds in the marine environment from the results of field measurement.Our monitoring system consists of two parts; cold trap (0.5g of Chromosorb 107 was packed in glass tube) and gas … More chromatograph with flame photometric detector. Sulfur compounds in the seawater and air were concentrated into the cold trap, and then they were injected into GC and determined by FPD. As all analytical processes were controlled by a sequencer, this system can successively analyze sulfur compounds both in the seawater and marine air at one hour interval. By using our monitoring system, field measurements were carried out in many oceanic areas; Mikawa Bay (Saku Island, 1992-1999), Pacific 0cean, Indian Ocean, Equatorial Ocean, Arctic (Research vessel "HAKUHO-MARU",1992, 1993, 1994, 1996, 1997, "Mirai" 1999) and so on. From the field measurements, many significant information about sulfur compounds in the marine environment was obtained. The mean DMS, COS, MeSH concentration in the seawater were 511ng/L(n=1014), 88ng/L(n=1053), 150ng/L(n=193) for the coastal area and 69ng/L(n=1146), 19ng/L(n=519), 15ng/L(n=15) for the open sea, respectively. Each concentration of sulfur compounds in the seawater was highly correlated with the marine primary productivity. Less