气候变化领域集成服务门户(CCPortal): Investigation of size distribution and mass characteristics of ambient aerosols and their combustion sources during post-monsoon in northern India

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DOI	10.1016/j.apr.2019.10.003
	Investigation of size distribution and mass characteristics of ambient aerosols and their combustion sources during post-monsoon in northern India
	Singh G.K.; Choudhary V.; Gupta T.; Paul D.
发表日期	2020
ISSN	13091042
卷号	11 期号:1
英文摘要	This study explores the size distribution and mass characteristics of ambient atmosphere in the source region of biomass burning (Punjab). The enhanced level of particulate matter (PM) concentrations were interpreted through measurements of number and mass concentration. MODIS (Moderate Resolution Imaging Spectroradiometer) fire count data and HYSPLIT (Hybrid Single-Particle Lagrangian Integrated Trajectory model) used to decipher the extent of burning activities and origin of air-masses, respectively. Significant diurnal variabilities were observed in the PM1 (PM with aerodynamic diameter ≤ 1 μm) and PM2.5 (aerodynamic diameter ≤ 2.5 μm) number and mass concentrations. Higher number (N0.3–2.5: 1.34 ± 0.20 × 104 #/cm3) and mass concentration (PM2.5: 286 ± 39 μg/m3, n = 5) during nighttime compared to daytime (N2.5: 0.74 ± 0.22 × 104 #/cm3; PM2.5: 224 ± 59 μg/m3, n = 3) indicates impact of meteorological conditions (low wind speed and shallower boundary layer height) and biomass (plausibly paddy) burning activity. Although possibility of multiple sources and their varying strength (poor correlation between organic carbon (OC) and elemental carbon (EC)) can't be neglected, however, biomass burning appeared to be the dominant source (good correlation (R2 = 0.4) between water-soluble potassium (K+) and PM) of ambient PM. Further, near similar number and mass size distribution of ambient and bio-fuels derived aerosols along with similar K+/PM and OC/EC ratio compared to that for paddy-residue burning imply that bio-fuel burning in the household kitchen could be the dominant contributor to enhanced PM concentration at sampling location in upwind IGP during the study period. © 2019 Turkish National Committee for Air Pollution Research and Control
英文关键词	Biomass burning; Haze; Indo-gangetic plain; Mass fraction; Paddy residue burning; Size distribution
语种	英语
来源期刊	Atmospheric Pollution Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120678
作者单位	Department of Civil Engineering and APTL at Center for Environmental Science and Engineering (CESE), Indian Institute of Technology Kanpur, Kanpur, 208 016, India; Department of Earth Sciences, Indian Institute of Technology Kanpur, Kanpur, 208 016, India
推荐引用方式 GB/T 7714	Singh G.K.,Choudhary V.,Gupta T.,et al. Investigation of size distribution and mass characteristics of ambient aerosols and their combustion sources during post-monsoon in northern India[J],2020,11(1).
APA	Singh G.K.,Choudhary V.,Gupta T.,&Paul D..(2020).Investigation of size distribution and mass characteristics of ambient aerosols and their combustion sources during post-monsoon in northern India.Atmospheric Pollution Research,11(1).
MLA	Singh G.K.,et al."Investigation of size distribution and mass characteristics of ambient aerosols and their combustion sources during post-monsoon in northern India".Atmospheric Pollution Research 11.1(2020).