干旱区生态环境知识资源中心(Arid): Multi-year characterization of aerosol black carbon concentrations over a semiarid tropical site Udaipur

Arid

DOI	10.1007/s11356-020-12300-y
	Multi-year characterization of aerosol black carbon concentrations over a semiarid tropical site Udaipur
	Vyas, Brij Mohan; Gogoi, Mukunda M.; Jose, Subin
通讯作者	Gogoi, MM (corresponding author), Indian Space Res Org, Space Phys Lab, Vikram Sarabhai Space Ctr, Trivandrum 695022, India.
来源期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN	0944-1344
EISSN	1614-7499
出版年	2021
卷号	28 期号:18 页码:22864-22877
英文摘要	Continuous and multi-year (2008-2012) measurements of black carbon (BC) mass concentrations (M-BC), carried out from the semiarid tropical site Udaipur (24.6 degrees N, 74 degrees E, 580 m a.s.l.) near the western Indian desert, are analyzed for their region-specific features. M-BC varied over a wide range during the period of study, with the hourly mean values occurring as low as 0.09 to as high as 49.1 mu g m(-3), with the multi-year average similar to 4.5 +/- 2.6 mu g m(-3). Annual variations showed the highest concentrations during November and December (winter seasonal mean = 7.4 +/- 3.3 mu g m(-3)) and the lowest in the monsoon months of July and August (monsoon seasonal mean = 2.5 +/- 2.2 mu g m(-3)). M-BC showed significant inverse relationship with the planetary boundary layer height (rho similar to - 0.50) as well as ventilation coefficient (rho similar to - 0.72). Alike aforesaid atmospheric dynamic parameters, T, WS, and RH also possessed statistically significant negative correlations with monthly M-BC. Enhancement in annual as well as diurnal amplitude in M-BC during deficient monsoon years relative to excessive monsoon years have given marked indication of BC sink mechanism due to precipitation. Roles of long-range regional air pollutant transport also have been identified. Identical and consistent seasonal variation in percentage contribution of M-BC with PM2.5 (varying from 2.6 to 9.1%) and absorption Angstrom exponent (alpha(abs), monthly mean values varying from 0.77 +/- 0.04 to 1.16 +/- 0.08) gives evidence of substantial amount of enhanced anthropogenic source activities of fossil fuel incomplete combustion in post-monsoon and winter period.
英文关键词	Aerosol black carbon PM2.5 Planetary boundary layer Ventilation coefficient
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000606728100003
WOS关键词	INDO-GANGETIC PLAIN ; LONG-TERM ; TEMPORAL VARIABILITY ; SOOT PARTICLES ; URBAN LOCATION ; STATION ; IMPACT ; ABSORPTION ; HIMALAYAS ; EMISSIONS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350170
作者单位	[Vyas, Brij Mohan] Pacific Univ, Dept Phys, Pacific Coll Basic& Appl Sci, Udaipur 313024, India; [Gogoi, Mukunda M.; Jose, Subin] Indian Space Res Org, Space Phys Lab, Vikram Sarabhai Space Ctr, Trivandrum 695022, India
推荐引用方式 GB/T 7714	Vyas, Brij Mohan,Gogoi, Mukunda M.,Jose, Subin. Multi-year characterization of aerosol black carbon concentrations over a semiarid tropical site Udaipur[J],2021,28(18):22864-22877.
APA	Vyas, Brij Mohan,Gogoi, Mukunda M.,&Jose, Subin.(2021).Multi-year characterization of aerosol black carbon concentrations over a semiarid tropical site Udaipur.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,28(18),22864-22877.
MLA	Vyas, Brij Mohan,et al."Multi-year characterization of aerosol black carbon concentrations over a semiarid tropical site Udaipur".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 28.18(2021):22864-22877.