气候变化领域集成服务门户(CCPortal): Weekly cycle assessment of PM mass concentrations and sources; and impacts on temperature and wind speed in Southern Italy

CCPortal

DOI	10.1016/j.atmosres.2018.11.013
	Weekly cycle assessment of PM mass concentrations and sources; and impacts on temperature and wind speed in Southern Italy
	Perrone M.R.; Vecchi R.; Romano S.; Becagli S.; Traversi R.; Paladini F.
发表日期	2019
ISSN	0169-8095
起始页码	129
结束页码	144
卷号	218
英文摘要	A methodology to detect the weekly cycle impact of the particulate matter (PM), and PM sources on the near surface temperature and wind speed is discussed in the paper. Chemically-speciated PM10 and PM2.5 samples are analyzed to detect the weekly cycle of both the PM mass concentrations and the PM sources identified by the Positive Matrix Factorization technique. The average percent departure (APD) of the PM mass concentration from the mean value calculated for each day of the week shows that a positive (higher values during midweek) and a negative (higher values during weekend) weekly cycle characterizes the PM10 and PM2.5 mass concentrations in Autumn-Winter (AW, September–February) and Spring-Summer (SS, March–August), respectively. The westerly transport of pollution seems to have a role on the negative PM weekly cycle found in SS. The analysis of the six identified aerosol sources indicates that in SS the mixed anthropogenic and the reacted dust sources likely impact the PM10 negative weekly cycle and that the mixed anthropogenic source likely impacts the PM2.5 negative weekly cycle. The mixed anthropogenic and soil dust sources likely affect in AW the positive weekly cycle of the PM10 mass concentration. Both sources in addition to the reacted dust source seem to affect the PM2.5 mass concentration in AW. The APD analysis of the temperature (T) and wind speed (WS) at the surface from measurements co-located in space and time with the PM ones reveals that the WS and T values are characterized by a negative weekly cycle in AW. Conversely, in SS, the WS-APD value decreases on Sunday and the T-APD values increase in the second half of the week. These last results likely give evidence of the PM impact on the near-surface temperature and wind speed at the study site. © 2018 Elsevier B.V.
英文关键词	Long-range transport; PM mass concentration; Positive Matrix Factorization; Temperature and wind speed; Weekly cycles
语种	英语
scopus关键词	Atmospheric temperature; Dust; Factorization; Matrix algebra; Speed; Surface properties; Long range transport; Mass concentration; Positive Matrix Factorization; Weekly cycles; Wind speed; Wind; concentration (composition); long range transport; numerical method; particulate matter; surface temperature; temporal cycle; wind velocity; Italy
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162190
作者单位	Department of Mathematics and Physics, University of Salento, Via per Arnesano, Lecce, 73100, Italy; Department of Physics, Università degli Studi di Milano, & INFN-Milan, Via Celoria 16, Milano, 20133, Italy; Department of Chemistry, University of Florence, Via della Lastruccia 3, Florence, Sesto Fiorentino 50019, Italy
推荐引用方式 GB/T 7714	Perrone M.R.,Vecchi R.,Romano S.,et al. Weekly cycle assessment of PM mass concentrations and sources; and impacts on temperature and wind speed in Southern Italy[J],2019,218.
APA	Perrone M.R.,Vecchi R.,Romano S.,Becagli S.,Traversi R.,&Paladini F..(2019).Weekly cycle assessment of PM mass concentrations and sources; and impacts on temperature and wind speed in Southern Italy.Atmospheric Research,218.
MLA	Perrone M.R.,et al."Weekly cycle assessment of PM mass concentrations and sources; and impacts on temperature and wind speed in Southern Italy".Atmospheric Research 218(2019).