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DOI	10.5194/acp-19-5363-2019
	Haze in Singapore-source attribution of biomass burning PM10 from Southeast Asia
	Buus Hansen A.; Suzanne Witham C.; Ming Chong W.; Kendall E.; Ning Chew B.; Gan C.; Craig Hort M.; Lee S.-Y.
发表日期	2019
ISSN	16807316
起始页码	5363
结束页码	5385
卷号	19 期号:8
英文摘要	This paper presents a study of haze in Singapore caused by biomass burning in Southeast Asia over the 6-year period from 2010 to 2015, using the Numerical Atmospheric-dispersion Modelling Environment (NAME), which is a Lagrangian dispersion model. The major contributing source regions to the haze are identified using forwards and backwards model simulations of particulate matter. The coincidence of relatively strong southeast monsoonal winds with increased biomass burning activities in the Maritime Continent create the main Singapore haze season from August to October (ASO), which brings particulate matter from varying source regions to Singapore. Five regions are identified as the dominating sources of pollution during recent haze seasons: Riau, Peninsular Malaysia, South Sumatra, and Central and West Kalimantan. In contrast, off-season haze episodes in Singapore are characterised by unusual weather conditions, ideal for biomass burning, and contributions dominated by a single source region (different for each event). The two most recent off-season haze events in mid-2013 and early 2014 have different source regions, which differ from the major contributing source regions for the haze season. These results challenge the current popular assumption that haze in Singapore is dominated by emissions/burning from only Indonesia. For example, it is shown that Peninsular Malaysia is a large source for the Maritime Continent off-season biomass burning impact on Singapore. The results demonstrate that haze in Singapore varies across year, season, and location and is influenced by local and regional weather, climate, and regional burning. Differences in haze concentrations and variation in the relative contributions from the various source regions are seen between monitoring stations across Singapore, on a seasonal as well as on an inter-annual timescale. This study shows that even across small scales, such as in Singapore, variation in local meteorology can impact concentrations of particulate matter significantly, and it emphasises the importance of the scale of modelling both spatially and temporally. © 2019 Author(s).
语种	英语
scopus关键词	aerosol; atmospheric transport; biomass burning; haze; numerical model; particulate matter; seasonal variation; source apportionment; spatiotemporal analysis; Borneo; Indonesia; Kalimantan; Malaysia; Riau; Singapore [Singapore (NTN)]; Singapore [Southeast Asia]; South Sumatra; West Malaysia
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144468
作者单位	Met Office, Exeter, United Kingdom; Meteorological Service Singapore, Singapore
推荐引用方式 GB/T 7714	Buus Hansen A.,Suzanne Witham C.,Ming Chong W.,et al. Haze in Singapore-source attribution of biomass burning PM10 from Southeast Asia[J],2019,19(8).
APA	Buus Hansen A..,Suzanne Witham C..,Ming Chong W..,Kendall E..,Ning Chew B..,...&Lee S.-Y..(2019).Haze in Singapore-source attribution of biomass burning PM10 from Southeast Asia.Atmospheric Chemistry and Physics,19(8).
MLA	Buus Hansen A.,et al."Haze in Singapore-source attribution of biomass burning PM10 from Southeast Asia".Atmospheric Chemistry and Physics 19.8(2019).