气候变化领域集成服务门户(CCPortal): Interaction of PM10 concentrations with local and synoptic meteorological conditions at different temporal scales

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DOI	10.1016/j.atmosres.2020.104975
	Interaction of PM10 concentrations with local and synoptic meteorological conditions at different temporal scales
	Hassan H.; Latif M.T.; Juneng L.; Amil N.; Khan M.F.; Yik D.J.; Abdullah N.A.
发表日期	2020
ISSN	0169-8095
卷号	241
英文摘要	Changing meteorological conditions over short and long time scales are anticipated to affect the concentrations of particulate matter with aerodynamic diameter below than 10 μm (PM10) in the atmosphere. This study aims to identify the temporal characteristics of PM10 including its relationship with local and synoptic meteorological conditions in Petaling Jaya (PJ), Malaysia from 1996 to 2016. A high volume sampler (HVS), mounted on the rooftop of MetMalaysia, was used to monitor daily PM10 concentrations. The meteorological parameter data were obtained from the MetMalaysia PJ station. The results showed the two highest PM10 concentrations recorded were 423.9 and 390.7 μgm−3 during the dry seasons in September 1997 and 2015, respectively. The temporal characteristics via wavelet analysis revealed clear annual (256–512 days), seasonal (64–256 days) and intra-seasonal (32–64 days) variations of PM10. Local temperature exhibited the highest positive correlation with PM10 (r = 0.24) at the daily scale compared to other meteorological parameters. At the seasonal scale, PM10 showed a negative correlation with local temperature during June, July and August (JJA) (r = −0.33, p < 0.05). Lead-lag analysis showed that the 3-month PM10 running averages in August September October (ASO) to October November December (OND) had a significant correlation (r = 0.70, p < 0.05) with the November December January (NDJ) Oceanic Niño Index (ONI). The PM10 monthly average in October exhibited the highest correlation (r = 0.73, p < 0.05) with NDJ ONI. This study concludes that PM10 is characterized by seasonal and intra-seasonal cycles. The ONI-PM10 analysis identifies that PM10 concentration varies with El-Niño Southern Oscillation (ENSO) phase modulation. © 2020 Elsevier B.V.
关键词	Atmospheric pressure ENSO Meteorological parameters PM10 Temporal variability Urban environments Climatology climate conditions concentration (composition)correlation diameter El Nino-Southern Oscillation particulate matter seasonal variation synoptic meteorology urban area Malaysia Petaling Jaya Selangor West Malaysia
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/132463
推荐引用方式 GB/T 7714	Hassan H.,Latif M.T.,Juneng L.,et al. Interaction of PM10 concentrations with local and synoptic meteorological conditions at different temporal scales[J]. Atmospheric Research,2020,241.
APA	Hassan H..,Latif M.T..,Juneng L..,Amil N..,Khan M.F..,...&Abdullah N.A..(2020).Interaction of PM10 concentrations with local and synoptic meteorological conditions at different temporal scales.,241.
MLA	Hassan H.,et al."Interaction of PM10 concentrations with local and synoptic meteorological conditions at different temporal scales".241(2020).