DOI: 10.1002/2017GB005689
Scopus记录号: 2-s2.0-85030479969
论文题名: Isotopic Ratios of Tropical Methane Emissions by Atmospheric Measurement
作者: Brownlow R ; , Lowry D ; , Fisher R ; E ; , France J ; L ; , Lanoisellé M ; , White B ; , Wooster M ; J ; , Zhang T ; , Nisbet E ; G
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2017
卷: 31, 期: 9 起始页码: 1408
结束页码: 1419
语种: 英语
英文关键词: isotopes
; methane
; tropics
; δ13C
Scopus关键词: carbon budget
; carbon isotope
; emission
; emission inventory
; isotopic ratio
; methane
; source apportionment
; tropical region
; wetland
英文摘要: Tropical methane sources are an important part of the global methane budget and include natural wetlands, rice agriculture, biomass burning, ruminants, fossil fuels, and waste. δ13CCH4 can provide strong constraints on methane source apportionment. For example, tropical wetlands in this study give δ13CCH4 values between −61.5 ± 2.9‰ and −53.0 ± 0.4‰ and in general are more enriched in 13C than temperate and boreal wetlands. However, thus far, relatively few measurements of δ13CCH4 in methane-enriched air have been made in the tropics. In this study samples have been collected from tropical wetland, rice, ruminant, and biomass burning emissions to the atmosphere. Regional isotopic signatures vary greatly as different processes and source material affect methane signatures. Measurements were made to determine bulk source inputs to the atmosphere, rather than to study individual processes. These measurements provide inputs for regional methane budget models, to constrain emissions with better source apportionment. ©2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77705
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth Sciences, Royal Holloway, University of London, Egham, United Kingdom; Centre for Oceanic and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom; Department of Geography, King's College London, Strand, United Kingdom; NERC National Center for Earth Observation, Leicester, United Kingdom
Recommended Citation:
Brownlow R,, Lowry D,, Fisher R,et al. Isotopic Ratios of Tropical Methane Emissions by Atmospheric Measurement[J]. Global Biogeochemical Cycles,2017-01-01,31(9)