气候变化领域集成服务门户(CCPortal): Limits for combustion in low O2 redefine paleoatmospheric predictions for the mesozoic

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DOI	10.1126/science.1160978
	Limits for combustion in low O2 redefine paleoatmospheric predictions for the mesozoic
	Belcher C.M.; McElwain J.C.
发表日期	2008
ISSN	0036-8075
起始页码	1197
结束页码	1200
卷号	321 期号:5893
英文摘要	Several studies have attempted to determine the lower limit of atmospheric oxygen under which combustion can occur; however, none have been conducted within a fully controlled and realistic atmospheric environment. We performed experimental burns (using pine wood, moss, matches, paper, and a candle) at 20°C in O2 concentrations ranging from 9 to 21% and at ambient and high CO2 (2000 parts per million) in a controlled environment room, which was equipped with a thermal imaging system and full atmospheric, temperature, and humidity control. Our data reveal that the lower O2 limit for combustion should be increased from 12 to 15%. These results, coupled with a record of Mesozoic paleowildfires, are incompatible with the prediction of prolonged intervals of low atmospheric O2 levels (10 to 12%) in the Mesozoic.
英文关键词	carbon dioxide; oxygen; carbon dioxide; combustion; imaging method; Mesozoic; oxygen; paleoatmosphere; prediction; wildfire; air temperature; article; burn; combustion; concentration (parameters); humidity; Mesozoic; priority journal; Animals; Atmosphere; Bryophyta; Extinction, Biological; Fires; Oxygen; Paper; Temperature; Time; Wood; Bryophyta
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/243005
作者单位	School of Biology and Environmental Science, University College Dublin (UCD), Belfield, Dublin 4, Ireland
推荐引用方式 GB/T 7714	Belcher C.M.,McElwain J.C.. Limits for combustion in low O2 redefine paleoatmospheric predictions for the mesozoic[J],2008,321(5893).
APA	Belcher C.M.,&McElwain J.C..(2008).Limits for combustion in low O2 redefine paleoatmospheric predictions for the mesozoic.Science,321(5893).
MLA	Belcher C.M.,et al."Limits for combustion in low O2 redefine paleoatmospheric predictions for the mesozoic".Science 321.5893(2008).