globalchange  > 气候减缓与适应
DOI: 10.1029/2017JD027827
Scopus记录号: 2-s2.0-85047493930
论文题名:
Fine Particle Emissions From Tropical Peat Fires Decrease Rapidly With Time Since Ignition
作者: Roulston C.; Paton-Walsh C.; Smith T.E.L.; Guérette É.-A.; Evers S.; Yule C.M.; Rein G.; Van der Werf G.R.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:10
起始页码: 5607
结束页码: 5617
语种: 英语
英文关键词: emissions ; fire ; peat ; PM2.5
英文摘要: Southeast Asia experiences frequent fires in fuel-rich tropical peatlands, leading to extreme episodes of regional haze with high concentrations of fine particulate matter (PM2.5) impacting human health. In a study published recently, the first field measurements of PM2.5 emission factors for tropical peat fires showed larger emissions than from other fuel types. Here we report even higher PM2.5 emission factors, measured at newly ignited peat fires in Malaysia, suggesting that current estimates of fine particulate emissions from peat fires may be underestimated by a factor of 3 or more. In addition, we use both field and laboratory measurements of burning peat to provide the first mechanistic explanation for the high variability in PM2.5 emission factors, demonstrating that buildup of a surface ash layer causes the emissions of PM2.5 to decrease as the peat fire progresses. This finding implies that peat fires are more hazardous (in terms of aerosol emissions) when first ignited than when still burning many days later. Varying emission factors for PM2.5 also have implications for our ability to correctly model the climate and air quality impacts downwind of the peat fires. For modelers able to implement a time-varying emission factor, we recommend an emission factor for PM2.5 from newly ignited tropical peat fires of 58 g of PM2.5 per kilogram of dry fuel consumed (g/kg), reducing exponentially at a rate of 9%/day. If the age of the fire is unknown or only a single value may be used, we recommend an average value of 24 g/kg. ©2018. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113869
Appears in Collections:气候减缓与适应

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作者单位: Centre for Atmospheric Chemistry, University of Wollongong, Wollongong, NSW, Australia; Department of Geography, King's College London, London, United Kingdom; Department of Geography and Environment, London School of Economics and Political Science, London, United Kingdom; School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, United Kingdom; School of Biosciences, University of Nottingham Malaysia Campus, Malaysia; School of Science, Monash University, Malaysia Campus, Malaysia; School of Science and Engineering, University of the Sunshine Coast, Australia; Department of Mechanical Engineering, Imperial College London, London, United Kingdom; Department of Earth Sciences, Faculty of Science, Vrije Universiteit, Amsterdam, Netherlands

Recommended Citation:
Roulston C.,Paton-Walsh C.,Smith T.E.L.,et al. Fine Particle Emissions From Tropical Peat Fires Decrease Rapidly With Time Since Ignition[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(10)
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