气候变化领域集成服务门户(CCPortal): A framework for setting up a country-wide network of regional surface PM2.5 sampling sites utilising a satellite-derived proxy

CCPortal

DOI	10.1016/j.atmosenv.2020.117544
	A framework for setting up a country-wide network of regional surface PM2.5 sampling sites utilising a satellite-derived proxy – The COALESCE project; India
	Lekinwala N.L.; Bhardwaj A.; Sunder Raman R.; Bhushan M.; Bali K.; Dey S.
发表日期	2020
ISSN	13522310
卷号	234
英文摘要	Air quality management and assessment of aerosol climate effects over a large area require the strategic placement of regionally representative monitoring sites (RRMS) to capture the required information. Ground-based, fine particulate matter (PM2.5) concentrations measured for a long duration at high spatial resolution i.e. at several potential locations in a region help identify an optimal regionally representative site for the monitoring network. However, in the absence of long-term PM2.5 concentrations with high spatial resolution, identification of RRMS is a challenge. To identify for such situations, a novel methodology utilising satellite-derived PM2.5 is presented in this study. High spatial resolution (1 km × 1 km) daily aerosol optical depth (AOD) over several years (2004–2011) is used to derive surface PM2.5 using appropriate conversion factors. PM2.5 concentrations thus derived for a potential site and its nearby cells in the region are subjected to statistical analysis, to quantify linear/non-linear relationships between the respective PM2.5 time-series. Metrics such as coefficient of divergence (CoD), Pearson correlation coefficient (PCC) and Mutual information (MI) are calculated to assess the regional representativeness of a site. These criteria combined with physical criteria such as proximity of the site to local sources, local meteorology analysis and clustered air parcel back-trajectory analysis, are used in a weight-of-evidence approach to establish site adequacy. The selection and validation of eleven sites for the COALESCE project, is used as an illustrative example, to demonstrate the effectiveness of the site-selection methodology developed in this study. © 2020 Elsevier Ltd
英文关键词	COALESCE project; Coefficient of divergence (CoD); MODIS aerosol Optical depth; Mutual information (MI); Pearson correlation coefficient (PCC); Regionally representative PM2.5 sampling sites
语种	英语
scopus关键词	Aerosols; Air quality; Correlation methods; Image resolution; Quality management; Time series analysis; Aerosol optical depths; Back trajectory analysis; Fine particulate matter (PM2.5); High spatial resolution; Mutual informations; Pearson correlation coefficients; PM2.5 concentration; Weight of evidence approach; Site selection; air quality; air sampling; climate effect; ground-based measurement; long-term change; particulate matter; pollution monitoring; regional climate; satellite altimetry; spatial resolution; aerosol; article; correlation coefficient; India; meteorology; optical depth; quantitative analysis; time series analysis; validation process; India
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145071
作者单位	Department of Chemical Engineering, Indian Institue of Technology Bombay, Mumbai, Maharashtra 400076, India; Interdisciplinary Programme in Climate Studies, Indian Institute of Technology Bombay, Mumbai, Maharashtra 400076, India; Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, Madhya Pradesh 462 066, India; Center for Research on Environment and Sustainable Technologies, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, Madhya Pradesh 462 066, India; Center for Atmospheric Science, Indian Institute of Technology Delhi, Delhi, 110016, India; Center of Excellence for Research on Clean Air, Indian Institute of Technology Delhi, Delhi, 110016, India
推荐引用方式 GB/T 7714	Lekinwala N.L.,Bhardwaj A.,Sunder Raman R.,等. A framework for setting up a country-wide network of regional surface PM2.5 sampling sites utilising a satellite-derived proxy – The COALESCE project; India[J],2020,234.
APA	Lekinwala N.L.,Bhardwaj A.,Sunder Raman R.,Bhushan M.,Bali K.,&Dey S..(2020).A framework for setting up a country-wide network of regional surface PM2.5 sampling sites utilising a satellite-derived proxy – The COALESCE project; India.Atmospheric Environment,234.
MLA	Lekinwala N.L.,et al."A framework for setting up a country-wide network of regional surface PM2.5 sampling sites utilising a satellite-derived proxy – The COALESCE project; India".Atmospheric Environment 234(2020).