Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2018.09.016 |
Year-long variability of the fossil fuel and wood burning black carbon components at a rural site in southern Delhi outskirts | |
Dumka, U. C.1; Kaskaoutis, D. G.2; Devara, P. C. S.3; Kumar, R.4; Kumar, S.1; Tiwari, S.5; Gerasopoulos, E.2; Mihalopoulos, N.2,6 | |
2019-02-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2019 |
卷号 | 216页码:11-25 |
文章类型 | Article |
语种 | 英语 |
国家 | India; Greece; USA |
英文摘要 | This study examines year-long (April 2015 - March 2016) measurements of black carbon (BC) concentrations acquired with a 7-wavelength Aethalometer (AE-42) at Panchgaon, in the southern Delhi outskirts. We assess the seasonality of BC concentrations and focus on the quantification of the relative contributions from fossil-fuel combustion (BCff) and wood burning (BCwb) on annual basis. Significant monthly, daily and diurnal variability in both BC components is found due to seasonal changes in the emission sources, dispersion conditions, and boundary-layer dynamics. The annual-mean BC concentration at 880 nm is 7.2 +/- 0.3 mu g m(-3) (range of 0.09-38.6 mu g m(-3)), exhibiting the highest values in winter (9.3 +/- 0.7 mu g m(-3)) and the lowest (4.6 +/- 0.2 mu g m(-3)) in summer monsoon. BCff (mean of 5.9 +/- 0.2 mu g m(-3)) is estimated to account for 81% of the BC mass on annual basis, while the BCwb ranges from 0.55 +/- 0.06 mu g m(-3) in July to 2.7 +/- 0.2 mu g m(-3) in December. The highest BCff/BC fraction is observed in April-June (similar to 86-87% at 880 nm), while the BCwb/BC peaks in October-December (23-29% at 880 nm). The BCff contribution increases in the early-morning hours due to traffic, while the BCwb fraction peaks during the evening and night hours in winter, due to wood and waste material burning for heating. The BC diurnal pattern is highly affected by the mixing-layer height variations, leading to lower concentrations around noon, when the vertical mixing and dilution processes are the strongest. The WRF-Chem model simulations represent rather satisfactorily the BC concentrations and diurnal patterns in summer, but fail to reproduce the BC peaks during late post-monsoon and winter, suggesting the need for refinement of the BC emissions, simulations of local meteorology, and/or boundary-layer dynamics. |
英文关键词 | Black Carbon Aethalometer model Fossil-fuel combustion Wood burning WRF-Chem Delhi |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452344700002 |
WOS关键词 | LIGHT-ABSORPTION MEASUREMENTS ; GANGETIC-HIMALAYAN REGION ; BOUNDARY-LAYER DYNAMICS ; SOURCE APPORTIONMENT ; TEMPORAL VARIABILITY ; OPTICAL-PROPERTIES ; SECONDARY AEROSOL ; BROWN CARBON ; WAVELENGTH DEPENDENCE ; URBAN-ENVIRONMENT |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/38586 |
专题 | 地球科学 |
作者单位 | 1.Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263001, India; 2.Natl Observ Athens, Inst Environm Res & Sustainable Dev, GR-11810 Athens, Greece; 3.Univ Haryana, Amity Ctr Ocean Atmospher Sci & Technol, Gurugram 122413, India; 4.Natl Ctr Atmospher Res, Boulder, CO 80301 USA; 5.Indian Inst Trop Meteorol, New Delhi Branch, New Delhi, India; 6.Univ Crete, Environm Chem Proc Lab, Iraklion 71003, Greece |
推荐引用方式 GB/T 7714 | Dumka, U. C.,Kaskaoutis, D. G.,Devara, P. C. S.,et al. Year-long variability of the fossil fuel and wood burning black carbon components at a rural site in southern Delhi outskirts[J]. ATMOSPHERIC RESEARCH,2019,216:11-25. |
APA | Dumka, U. C..,Kaskaoutis, D. G..,Devara, P. C. S..,Kumar, R..,Kumar, S..,...&Mihalopoulos, N..(2019).Year-long variability of the fossil fuel and wood burning black carbon components at a rural site in southern Delhi outskirts.ATMOSPHERIC RESEARCH,216,11-25. |
MLA | Dumka, U. C.,et al."Year-long variability of the fossil fuel and wood burning black carbon components at a rural site in southern Delhi outskirts".ATMOSPHERIC RESEARCH 216(2019):11-25. |
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