气候变化领域集成服务门户(CCPortal): A new marine biogenic emission: Methane sulfonamide (MSAM); dimethyl sulfide (DMS); and dimethyl sulfone (DMSO2) measured in air over the Arabian Sea

CCPortal

DOI	10.5194/acp-20-6081-2020
	A new marine biogenic emission: Methane sulfonamide (MSAM); dimethyl sulfide (DMS); and dimethyl sulfone (DMSO2) measured in air over the Arabian Sea
	Edtbauer A.; Stönner C.; Pfannerstill E.Y.; Berasategui M.; Walter D.; Crowley J.N.; Lelieveld J.; Williams J.
发表日期	2020
ISSN	1680-7316
起始页码	6081
结束页码	6094
卷号	20 期号:10
英文摘要	We present the first ambient measurements of a new marine emission methane sulfonamide (MSAM: CH5NS), along with dimethyl sulfide (DMS) and dimethyl sulfone (DMSO2) over the Arabian Sea. Two shipborne transects (W→E, E→W) were made during the AQABA (Air Quality and Climate Change in the Arabian Basin) measurement campaign. Molar mixing ratios in picomole of species per mole of air (throughout this paper abbreviated as ppt) of DMS were in the range of 300-500 ppt during the first traverse of the Arabian Sea (first leg) and 100-300 ppt on the second leg. On the first leg DMSO2 was always below 40 ppt and MSAM was close to the limit of detection. During the second leg DMSO2 was between 40 and 120 ppt and MSAM was mostly in the range of 20-50 ppt with maximum values of 60 ppt. An analysis of HYSPLIT back trajectories combined with calculations of the exposure of these trajectories to underlying chlorophyll in the surface water revealed that most MSAM originates from the Somalia upwelling region, known for its high biological activity. MSAM emissions can be as high as one-third of DMS emissions over the upwelling region. This new marine emission is of particular interest as it contains both sulfur and nitrogen, making it potentially relevant to marine nutrient cycling and marine atmospheric particle formation. © Author(s) 2020.
语种	英语
scopus关键词	atmospheric chemistry; biogenic emission; chlorophyll; dimethylsulfide; methane; mixing ratio; nitrogen; nutrient cycling; sulfur; Arabian Sea; Indian Ocean
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141327
作者单位	Atmospheric Chemistry Department, Max Planck Institute for Chemistry, Mainz, Germany; Department Biogeochemical Processes, Max Planck Institute for Biogeochemistry, Jena, Germany; Energy, Environment and Water Research Center, Cyprus Institute, Nicosia, Cyprus
推荐引用方式 GB/T 7714	Edtbauer A.,Stönner C.,Pfannerstill E.Y.,et al. A new marine biogenic emission: Methane sulfonamide (MSAM); dimethyl sulfide (DMS); and dimethyl sulfone (DMSO2) measured in air over the Arabian Sea[J],2020,20(10).
APA	Edtbauer A..,Stönner C..,Pfannerstill E.Y..,Berasategui M..,Walter D..,...&Williams J..(2020).A new marine biogenic emission: Methane sulfonamide (MSAM); dimethyl sulfide (DMS); and dimethyl sulfone (DMSO2) measured in air over the Arabian Sea.Atmospheric Chemistry and Physics,20(10).
MLA	Edtbauer A.,et al."A new marine biogenic emission: Methane sulfonamide (MSAM); dimethyl sulfide (DMS); and dimethyl sulfone (DMSO2) measured in air over the Arabian Sea".Atmospheric Chemistry and Physics 20.10(2020).