气候变化领域集成服务门户(CCPortal): The statistical behavior of PM10 events over guadeloupean archipelago: Stationarity, modelling and extreme events

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DOI	10.1016/j.atmosres.2020.104956
	The statistical behavior of PM10 events over guadeloupean archipelago: Stationarity, modelling and extreme events
	Plocoste T.; Calif R.; Euphrasie-Clotilde L.; Brute F.-N.
发表日期	2020
ISSN	0169-8095
卷号	241
英文摘要	Environmental pollution management is one of the most important features in pollution risk assessment. Several studies have shown that exposure to particulate matter with an aerodynamic diameter of 10 μm or less, i.e. PM10, were associated to adverse health effects. To our knowledge, no study has yet investigated the modelling of PM10 frequency distribution and extreme events in the Caribbean basin. Here, the descriptive statistics and four theoretical distributions (lognormal, Weibull, Burr and stable) were used to fit the parent distribution of PM10 daily average concentrations in Guadeloupe archipelago with a database of 11 years. In order to determine the best distribution, the Kolmogorov–Smirnov statistic test (KS test) was computed as performance indicator value. With an annual average of 26.4 ± 16.1 μg/m3, the descriptive statistics highlighted that PM10 concentrations in Guadeloupe are lower than those measured in cities of Europe, Asia or Africa. Contrary to other megacities, we found that high PM10 levels in Guadeloupe are mainly due to natural large-scale sources, i.e. African dust. From May to September, i.e. high dust season, PM10 concentrations are 1.5 times larger since dust outbreaks are more frequent. A statistical stationarity threshold of 66 months is estimated using the distribution analysis. This underlines the cycle stability of African dust over this last decade. Concerning the statistical modelling, our results showed that Burr & Weibull mixture model is the best distribution to represent PM10 daily average concentrations with a first statistical behavior corresponding to the low dust season and an another to the high dust season. By analysing the extreme events statistic with the classical power-law distribution, we observed that Burr & Weibull mixture model could also improve the modelling of these events. In summary, the Burr & Weibull mixture model is suitable to model both classical and extreme events. © 2020 Elsevier B.V.
关键词	Air pollution Computational complexity Dust Mixtures Risk assessment Statistics Caribbean area Descriptive statistics Environmental pollutions Extreme events Frequency distributions Mixture model Stationarity Statistical stationarity Weibull distribution atmospheric modeling concentration (composition)extreme event health risk particulate matter power law distribution statistical distribution Weibull theory Guadeloupe Leeward Islands [Lesser Antilles]
语种	英语
来源机构	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132470
推荐引用方式 GB/T 7714	Plocoste T.,Calif R.,Euphrasie-Clotilde L.,et al. The statistical behavior of PM10 events over guadeloupean archipelago: Stationarity, modelling and extreme events[J]. Atmospheric Research,2020,241.
APA	Plocoste T.,Calif R.,Euphrasie-Clotilde L.,&Brute F.-N..(2020).The statistical behavior of PM10 events over guadeloupean archipelago: Stationarity, modelling and extreme events.,241.
MLA	Plocoste T.,et al."The statistical behavior of PM10 events over guadeloupean archipelago: Stationarity, modelling and extreme events".241(2020).