气候变化领域集成服务门户(CCPortal): What caused the extreme CO concentrations during the 2017 high-pollution episode in India?

CCPortal

DOI	10.5194/acp-19-3433-2019
	What caused the extreme CO concentrations during the 2017 high-pollution episode in India?
	Dekker I.N.; Houweling S.; Pandey S.; Krol M.; Röckmann T.; Borsdorff T.; Landgraf J.; Aben I.
发表日期	2019
ISSN	16807316
起始页码	3433
结束页码	3445
卷号	19 期号:6
英文摘要	The TROPOspheric Monitoring Instrument (TROPOMI), launched 13 October 2017, has been measuring carbon monoxide (CO) concentrations in the Earth's atmosphere since early November 2017. In the first measurements, TROPOMI was able to measure CO concentrations of the high-pollution event in India of November 2017. In this paper, we studied the extent of the pollution in India, comparing the TROPOMI CO with modeled data from the Weather Research and Forecasting model (WRF) to identify the most important sources contributing to the high pollution, both at ground level and in the total column. We investigated the period 11-19 November 2017. We found that residential and commercial combustion was a much more important source of CO pollution than the post-monsoon crop burning during this period, which is in contrast to what media suggested and some studies on aerosol emissions found. Also, the high pollution was not limited to Delhi and its direct neighborhood but the accumulation of pollution extended over the whole Indo-Gangetic Plain (IGP) due to the unfavorable weather conditions in combination with extensive emissions. From the TROPOMI data and WRF simulations, we observed a buildup of CO during 11-14 November and a decline in CO after 15 November. The meteorological conditions, characterized by low wind speeds and shallow atmospheric boundary layers, were most likely the primary explanation for the temporal accumulation and subsequent dispersion of regionally emitted CO in the atmosphere. This emphasizes the important role of atmospheric dynamics in determining the air quality conditions at ground level and in the total column. Due to its rapidly growing population and economy, India is expected to encounter similar pollution events more often in future post-monsoon and winter seasons unless significant policy measures are taken to reduce residential and commercial emissions. © Author(s) 2019.
语种	英语
scopus关键词	aerosol; atmospheric pollution; boundary layer; carbon emission; carbon monoxide; concentration (composition); pollutant source; troposphere; weather forecasting; India
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144565
作者单位	SRON Netherlands Institute for Space Research, Utrecht, 3584 CC, Netherlands; Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, 3584 CA, Netherlands; Department of Earth Sciences, Vrije Universiteit Amsterdam, Amsterdam, 1081 HV, Netherlands; Department of Meteorology and Air Quality, Wageningen University and Research Centre, Wageningen, 6708 PB, Netherlands
推荐引用方式 GB/T 7714	Dekker I.N.,Houweling S.,Pandey S.,et al. What caused the extreme CO concentrations during the 2017 high-pollution episode in India?[J],2019,19(6).
APA	Dekker I.N..,Houweling S..,Pandey S..,Krol M..,Röckmann T..,...&Aben I..(2019).What caused the extreme CO concentrations during the 2017 high-pollution episode in India?.Atmospheric Chemistry and Physics,19(6).
MLA	Dekker I.N.,et al."What caused the extreme CO concentrations during the 2017 high-pollution episode in India?".Atmospheric Chemistry and Physics 19.6(2019).