globalchange  > 气候变化事实与影响
DOI: 10.1002/2014GB004969
Scopus记录号: 2-s2.0-85027924655
论文题名:
Dimethyl sulfide in the Amazon rain forest
作者: Jardine K; , Yañez-Serrano A; M; , Williams J; , Kunert N; , Jardine A; , Taylor T; , Abrell L; , Artaxo P; , Guenther A; , Hewitt C; N; , House E; , Florentino A; P; , Manzi A; , Higuchi N; , Kesselmeier J; , Behrendt T; , Veres P; R; , Derstroff B; , Fuentes J; D; , Martin S; T; , Andreae M; O
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期:1
起始页码: 19
结束页码: 32
语种: 英语
英文关键词: Amazon ; dimethyl sulfide ; DMS
Scopus关键词: air-soil interaction ; biogenic emission ; biogeochemistry ; climate feedback ; dimethylsulfide ; mixing ratio ; rainforest ; soil emission ; spatiotemporal analysis ; sulfuric acid ; Amazon Basin
英文摘要: Surface-to-atmosphere emissions of dimethyl sulfide (DMS) may impact global climate through the formation of gaseous sulfuric acid, which can yield secondary sulfate aerosols and contribute to new particle formation. While oceans are generally considered the dominant sources of DMS, a shortage of ecosystem observations prevents an accurate analysis of terrestrial DMS sources. Using mass spectrometry, we quantified ambient DMS mixing ratios within and above a primary rainforest ecosystem in the central Amazon Basin in real-time (2010-2011) and at high vertical resolution (2013-2014). Elevated but highly variable DMS mixing ratios were observed within the canopy, showing clear evidence of a net ecosystem source to the atmosphere during both day and night in both the dry and wet seasons. Periods of high DMS mixing ratios lasting up to 8 h (up to 160 parts per trillion (ppt)) often occurred within the canopy and near the surface during many evenings and nights. Daytime gradients showed mixing ratios (up to 80 ppt) peaking near the top of the canopy as well as near the ground following a rain event. The spatial and temporal distribution of DMS suggests that ambient levels and their potential climatic impacts are dominated by local soil and plant emissions. A soil source was confirmed by measurements of DMS emission fluxes from Amazon soils as a function of temperature and soil moisture. Furthermore, light- and temperature-dependent DMS emissions were measured from seven tropical tree species. Our study has important implications for understanding terrestrial DMS sources and their role in coupled land-atmosphere climate feedbacks. © 2014. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78006
Appears in Collections:气候变化事实与影响

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作者单位: Climate Science Department, Earth Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States; National Institute for Amazon Research, Manaus, Brazil; Atmospheric Chemistry and Biogeochemistry Departments, Max Planck Institute for Chemistry, Mainz, Germany; Max Plank Institute for Biogeochemistry, Jena, Germany; Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, United States; Departments of Chemistry and Biochemistry and Soil, Water and Environmental Science, University of Arizona, Tucson, AZ, United States; Institute of Physics, University of São Paulo, São Paulo, Brazil; Pacific Northwest National Laboratory, Richland, WA, United States; Lancaster Environment Centre, University of Lancaster, Lancaster, United Kingdom; Department of Meteorology, College of Earth and Mineral Sciences, Pennsylvania State University, University Park, PA, United States; School of Engineering and Applied Sciences, Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States

Recommended Citation:
Jardine K,, Yañez-Serrano A,M,et al. Dimethyl sulfide in the Amazon rain forest[J]. Global Biogeochemical Cycles,2015-01-01,29(1)
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