[A-CG41] 海洋表層－大気間の生物地球化学

[ACG41-P02] DMS-PRO: Developing resources for the study of Methylated Sulfur compound cycling PROcesses in the ocean

*林田 博士¹、Galí Martí²、del Valle Daniela A.³、Archer Stephen D.⁴、Bange Hermann W.⁵、Bucciarelli Eva⁶、Deschaseaux Elisabeth S. M.⁷、González José M.⁸、Hopkins Frances E.⁹、亀山 宗彦¹⁰、McNabb Brandon¹¹、McParland Erin L.¹²、Park Ki-Tae¹³、Shenoy Damodar¹⁴、Stefels Jacqueline¹⁵、Todd Jonathan D.¹⁶、Winkel Lenny H. E.¹⁷、Yang Gui-Peng ¹⁸、Zárate Marcos¹⁹、Zhang Miming²⁰ (1.海洋研究開発機構、2.Institut de Ciències del Mar (ICM, CSIC), Barcelona, Catalonia, Spain、3.Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; and Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Mar del Plata, Argentina、4.Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, USA、5.GEOMAR Helmholtz Centre for Oceanic Research Kiel, Kiel, Germany、6.Univ Brest, CNRS, IRD, Ifremer, LEMAR, Plouzane, France、7.Centre for Coastal Biogeochemistry, School of Environment, Science and Engineering, Southern Cross University, Lismore, Australia、8.Department of Microbiology, University of La Laguna, La Laguna, Spain、9.Plymouth Marine Laboratory, Prospect Place, Plymouth, UK、10.北海道大学、11.Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, Canada、12.Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, USA、13.Korea Polar Research Institute, Incheon, South Korea, and University of Science and Technology, Daejeon, South Korea、14.CSIR-National Institute of Oceanography, Dona Paula, Goa, India、15.The Groningen Institute of Evolutionary Life Sciences, University of Groningen, Groningen, the Netherlands、16.School of Biological Sciences, University of East Anglia, Norwich, UK、17.Department of Environmental Systems Science, Zurich, Switzerland; and Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland、18.Institute of Marine Chemistry, Ocean University of China, Qingdao, P.R. China、19.Centro para el Estudio de Sistemas Marinos, Consejo Nacional de Investigaciones Científicas y Técnicas (CESIMAR-CONICET), Puerto Madryn, Argentina、20.Key Laboratory of Global Change and Marine-Atmospheric Chemistry, Ministry of Natural Resources, Third Institute of Oceanography, Xiamen, P.R. China)

キーワード：海洋硫黄循環、硫化ジメチル、生物起源エアロゾル、CLAW仮説

Organic methylated sulfur compounds (MSCs) play key roles in planktonic food webs as important carbon and sulfur substrates and as infochemicals that facilitate biological interactions. In addition, the oceanic emission of biogenic volatile MSCs (dimethylsulfide and methanethiol) to the atmosphere acts as a source of aerosols, which impact cloud formation and properties, and hence climate. Understanding the role of MSCs in the Earth system requires accurate rate measurements to capture the rapid biotic and abiotic cycling processes responsible for the turnover of MSCs in the surface ocean. However, we currently lack both standardized protocols for the analytical determination, and a quality-controlled database for process rate measurements of MSCs. The recently formed DMS-PRO (SCOR working group 166) will address these knowledge gaps by (i) compiling a comprehensive, open-access database of quality-controlled, existing and future MSC cycling rates; and (ii) publishing standardized operating practices on analytical procedures involved in the determination of MSCs rates. An overarching aspiration of DMS-PRO is to stimulate research, build capacity, and establish an international, multidisciplinary community of practice on the global sulfur cycle that can share knowledge and skills with the broader oceanographic and Earth system science communities.