气候变化领域集成服务门户(CCPortal): Tracking NO2 emission from thermal power plants in North India using TROPOMI data

CCPortal

DOI	10.1016/j.atmosenv.2021.118514
	Tracking NO2 emission from thermal power plants in North India using TROPOMI data
	Saw G.K.; Dey S.; Kaushal H.; Lal K.
发表日期	2021
ISSN	1352-2310
卷号	259
英文摘要	Exposure to air pollution is the largest environmental health risk in India, where the coal-fed thermal power plants (TPPs) are identified as the single largest air pollution source. The key to an efficient air quality management plan is strict compliance of the TPPs with emission norms. Yet, in-situ measurements are lacking, and the bottom-up emission inventory is not periodically updated in India. Here we adopt a top-down approach to estimate NO2 emission from nine TPPs within 300 km of the megacity Delhi using TROPOspheric Monitoring Instrument (TROPOMI) data. We first estimate the NO2 lifetime for each TPP using an e-folding decay length along the wind direction and combine it with the NO2 columnar molecular density to estimate the NO2 emission. Our estimates show a correlation coefficient of 0.88, and a root mean square error of 4.15 kt/year with the ECLIPSE V5 bottom-up inventory. NO2 emission in these TPPs varied in the range of 8.0–30.6 kt/year with considerable seasonal variability. Using this data, we report a decrease in NO2 emission in the range 41%–290% during the COVID-19 lockdown period relative to the same period in the previous year. As India launched the National Clean Air Program to control air pollution, our method would be highly useful in tracking the emission compliance of the TPPs across the country. © 2021 Elsevier Ltd
关键词	India Lockdown impact NO2 emission Power plants TROPOMI data
语种	英语
scopus关键词	Air pollution control; Air quality; Compliance control; Health risks; Mean square error; Nitrogen oxides; Quality management; Bottom up; India; Lockdown impact; Monitoring instruments; NO $-2$; NO2 emission; North India; Power; Thermal-power plants; Tropospheric monitoring instrument data; Thermoelectric power plants; air quality; anthropogenic source; atmospheric pollution; bottom-up approach; coal-fired power plant; correlation; emission inventory; environmental risk; nitrous oxide; pollution exposure; seasonal variation; thermal power; top-down approach; Delhi; 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/248377
作者单位	Central University of Jharkhand, India; Centre of Excellence for Research on Clean Air (CERCA), Indian Institute of Technology Delhi, India; Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, India
推荐引用方式 GB/T 7714	Saw G.K.,Dey S.,Kaushal H.,et al. Tracking NO2 emission from thermal power plants in North India using TROPOMI data[J],2021,259.
APA	Saw G.K.,Dey S.,Kaushal H.,&Lal K..(2021).Tracking NO2 emission from thermal power plants in North India using TROPOMI data.ATMOSPHERIC ENVIRONMENT,259.
MLA	Saw G.K.,et al."Tracking NO2 emission from thermal power plants in North India using TROPOMI data".ATMOSPHERIC ENVIRONMENT 259(2021).