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

遥感研究海洋生物硫排放机制及其对全球气候变化的影响

基本信息

批准号：
10480129
负责人：
TANAKA Shigeru
金额：
$ 6.08万
依托单位：
Keio University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10480129/
关键词：
Biogenic Sulfur Emission Mechanism from the Ocean Remoto Sensing Dimehtyl Sulfide Carbonyl Sulfide Influence to Global Climate Change Methane Sulfuric Acid メタンスルホン酸

项目摘要

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

海洋生物硫化合物DMS（CHD23D2SCHD23D2）和MeSH（CHD23D2SH）从海洋中排放并氧化成硫酸盐气溶胶，被认为充当CCN（云凝结核），因此DMS和MeSH对全球产生影响。气候变化也是一个主要来源。平流层中的硫气溶胶这些硫化合物与海洋中的 DMSP ((CHD23D2)D22D2SD1+D1CHD22D2CHD22D2COOD1- D1) 和 DMSO (CHD23D2SOCHD23D2) 相关。并与大气中的自由基反应，氧化成硫酸盐。在本研究中，为了了解生物硫循环，研究了以下两个课题：1）开发环境中硫化合物的自动监测系统。根据现场测量结果，了解海洋环境中生物硫化合物的行为。我们的监测系统由两部分组成：冷阱（0.5g Chromosorb 107 装在玻璃管中）和带有火焰光度检测器的气相色谱仪将海水和空气中的硫浓缩到冷阱中，然后注入GC并通过FPD进行测定，由于所有分析过程均由测序仪控制，因此该系统可以成功分析。通过使用我们的监测系统，在许多海洋区域进行了海水和海洋空气中硫化合物的现场测量（佐久岛，1992-1999），太平洋0海洋、印度洋、赤道洋、北极（研究船“HAKUHO-MARU”，1992、1993、1994、1996、1997，“Mirai”1999）等从实地测量中，获得了许多关于硫化合物的重要信息。获得了海水中的平均 DMS、COS、MeSH 浓度。沿海地区511ng/L(n=1014)、88ng/L(n=1053)、150ng/L(n=193)；沿海地区69ng/L(n=1146)、19ng/L(n=519)、15ng分别为公海的 /L(n=15) 海水中硫化合物的浓度与海洋原生物质高度相关。生产力较低。