气候变化领域集成服务门户(CCPortal): A 21st-century shift from fossil-fuel to biogenic methane emissions indicated by 13CH4

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DOI	10.1126/science.aad2705
	A 21st-century shift from fossil-fuel to biogenic methane emissions indicated by 13CH4
	Schaefer H.; Fletcher S.E.M.; Veidt C.; Lassey K.R.; Brailsford G.W.; Bromley T.M.; Dlugokencky E.J.; Michel S.E.; Miller J.B.; Levin I.; Lowe D.C.; Martin R.J.; Vaughn B.H.; White J.W.C.
发表日期	2016
ISSN	0036-8075
起始页码	80
结束页码	84
卷号	352 期号:6281
英文摘要	Between 1999 and 2006, a plateau interrupted the otherwise continuous increase of atmospheric methane concentration [CH4] since preindustrial times. Causes could be sink variability or a temporary reduction in industrial or climate-sensitive sources. We reconstructed the global history of [CH4] and its stable carbon isotopes from ice cores, archived air, and a global network of monitoring stations. A box-model analysis suggests that diminishing thermogenic emissions, probably from the fossil-fuel industry, and/or variations in the hydroxyl CH4 sink caused the [CH4] plateau. Thermogenic emissions did not resume to cause the renewed [CH4] rise after 2006, which contradicts emission inventories. Post-2006 source increases are predominantly biogenic, outside the Arctic, and arguably more consistent with agriculture than wetlands. If so, mitigating CH4 emissions must be balanced with the need for food production.
英文关键词	carbon; coal; fossil fuel; methane; natural gas; ozone; atmospheric dynamics; biogenic emission; concentration (composition); emission inventory; fossil fuel; methane; reconstruction; spatiotemporal analysis; stable isotope; boundary layer; carbon footprint; carbon source; climate change; environmental change; food industry; human; human activities; nonhuman; priority journal; remote sensing; Review; thermogenesis; troposphere; water vapor; wetland; Arctic
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245350
作者单位	Climate and Atmosphere Center, National Institute of Water and Atmospheric Research (NIWA), 301 Evans Bay Parade, Wellington, 6021, New Zealand; Institut für Umweltphysik, Heidelberg University, Im Neuenheimer Feld 229, Heidelberg, 69120, Germany; National Oceanic and Atmospheric Administration (NOAA), Earth System Research Laboratory (ESRL), Global Monitoring Division, 325 Broadway, Boulder, CO 80305, United States; Institute of Arctic and Alpine Research (INSTAAR), University of Colorado, Boulder, CO 80309, United States; Lassey Research and Education, 4 Witako Street, Lower Hutt, 5011, New Zealand; LoweNZ, 31 Queen Street, Lower Hutt, 5012, New Zealand
推荐引用方式 GB/T 7714	Schaefer H.,Fletcher S.E.M.,Veidt C.,et al. A 21st-century shift from fossil-fuel to biogenic methane emissions indicated by 13CH4[J],2016,352(6281).
APA	Schaefer H..,Fletcher S.E.M..,Veidt C..,Lassey K.R..,Brailsford G.W..,...&White J.W.C..(2016).A 21st-century shift from fossil-fuel to biogenic methane emissions indicated by 13CH4.Science,352(6281).
MLA	Schaefer H.,et al."A 21st-century shift from fossil-fuel to biogenic methane emissions indicated by 13CH4".Science 352.6281(2016).