Application of the Orthogonal Polynomial Fitting Method in Estimating PM2.5 Concentrations in Central and Southern Regions of China

doi:10.3390/ijerph16081418

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋环境与数值模拟研究室

	Application of the Orthogonal Polynomial Fitting Method in Estimating PM2.5 Concentrations in Central and Southern Regions of China
	Li, Bingtian 1,2,3; Liu, Yongzhi 4,5; Wang, Xinyi 4,5; Fu, Qingjun 1; Lv, Xianqing 2,3
刊名	INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
	2019-04-02
卷号	16 期号:8
关键词	fine particles (PM2 5) orthogonal polynomial fitting (OPF) interpolation
ISSN号	1660-4601
DOI	10.3390/ijerph16081418
英文摘要	Sufficient and accurate air pollutant data are essential to analyze and control air contamination problems. An orthogonal polynomial fitting (OPF) method using Chebyshev basis functions is introduced to produce spatial distributions of fine particle (PM2.5) concentrations in central and southern regions of China. Idealized twin experiments (IE1 and IE2) are designed to validate the feasibility of the OPF method. IE1 is designed in accordance with the most common distribution of PM2.5 concentrations in China, whereas IE2 represents a common distribution in spring and autumn. In both idealized experiments, prescribed distributions are successfully estimated by the OPF method with smaller errors than kriging or Cressman interpolations. In practical experiments, cross-validation is employed to assess the interpolation results. Distributions of PM2.5 concentrations are well improved when OPF is applied. This suggests that errors decrease when the fitting order increases and arrives at the minimum when both orders reach 6. Results calculated by the OPF method are more accurate than kriging and Cressman interpolations if appropriate fitting orders are selected in practical experiments.
资助项目	Open Fund of the Key Laboratory of Ocean Circulation and Waves, Chinese Academy of Sciences[KLOCW1807]
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
语种	英语
出版者	MDPI
WOS记录号	WOS:000467747100111
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/21455]
专题	业务部门_海洋环境与数值模拟研究室
通讯作者	Lv, Xianqing
作者单位	1.Shandong Univ Sci & Technol, Coll Ocean Sci & Engn, Qingdao 266590, Shandong, Peoples R China 2.Ocean Univ China, CIMST, Phys Oceanog Lab, Qingdao 266200, Shandong, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266200, Shandong, Peoples R China 4.Minist Nat Resources, Inst Oceanog 1, Qingdao 266061, Shandong, Peoples R China 5.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266061, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Li, Bingtian,Liu, Yongzhi,Wang, Xinyi,et al. Application of the Orthogonal Polynomial Fitting Method in Estimating PM2.5 Concentrations in Central and Southern Regions of China[J]. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,2019,16(8).
APA	Li, Bingtian,Liu, Yongzhi,Wang, Xinyi,Fu, Qingjun,&Lv, Xianqing.(2019).Application of the Orthogonal Polynomial Fitting Method in Estimating PM2.5 Concentrations in Central and Southern Regions of China.INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,16(8).
MLA	Li, Bingtian,et al."Application of the Orthogonal Polynomial Fitting Method in Estimating PM2.5 Concentrations in Central and Southern Regions of China".INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 16.8(2019).