Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD025634 |
Carbon isotope-constrained seasonality of carbonaceous aerosol sources from an urban location (Kanpur) in the Indo-Gangetic Plain | |
Bikkina, Srinivas1,2; Andersson, August1,2; Ram, Kirpa3,4; Sarin, M. M.3; Sheesley, Rebecca J.1,2; Kirillova, Elena N.1,2; Rengarajan, R.3; Sudheer, A. K.3; Gustafsson, Orjan1,2 | |
2017-05-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; India |
英文摘要 | The Indo-Gangetic Plain (IGP) in northern India, Pakistan, and Bangladesh is a major source of carbonaceous aerosols in South Asia. However, poorly constrained seasonality of their sources over the IGP leads to large uncertainty in climate and health effects. Here we present a first data set for year-round radiocarbon (C-14) and stable carbon (C-13)-based source apportionment of total carbon (TC) in ambient PM10 (n = 17) collected from an urban site (Kanpur: 26.5 degrees N, 80.3 degrees E) in the IGP during January 2007 to January 2008. The year-round C-14-based fraction biomass (f(bio-TC)) estimate at Kanpur averages 777% and emphasizes an impact of biomass burning emissions (BBEs). The highest f(bio-TC) (%) is observed in fall season (October-November, 856%) followed by winter (December-February, 804%) and spring (March-May, 758%), while lowest values are found in summer (June-September, 69 +/- 2%). Since biomass/coal combustion and vehicular emissions mostly contribute to carbonaceous aerosols over the IGP, we predict C-13(TC) (C-13(pred)) over Kanpur using known C-13 source signatures and the measured C-14 value of each sample. The seasonal variability of C-13(obs)-C-13(pred) versus C-14(TC) together with air mass back trajectories and Moderate Resolution Imaging Spectroradiometer fire count data reveal that carbonaceous aerosols in winter/fall are significantly influenced by atmospheric aging (downwind transport of crop residue burning/wood combustion emissions in the northern IGP), while local sources (wheat residue combustion/vehicular emissions) dominate in spring/summer. Given the large temporal and seasonal variability in sources and emission strength of TC over the IGP, C-14-based constraints are, thus, crucial for reducing their uncertainties in carbonaceous aerosol budgets in climate models. |
英文关键词 | radiocarbon stable carbon isotope Indo-Gangetic Plain South Asia carbonaceous aerosols biomass burning emissions |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402039000009 |
WOS关键词 | SOLUBLE ORGANIC-CARBON ; INDIAN-OCEAN EXPERIMENT ; BIOMASS BURNING EMISSIONS ; LOW-MOLECULAR-WEIGHT ; STABLE CARBON ; BLACK-CARBON ; OPTICAL-PROPERTIES ; ELEMENTAL CARBON ; NORTHERN INDIA ; ANTHROPOGENIC SOURCES |
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/33966 |
专题 | 气候变化 |
作者单位 | 1.Stockholm Univ, Dept Environm Sci & Analyt Chem ACES, Stockholm, Sweden; 2.Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden; 3.Phys Res Lab, Geosci Div, Ahmadabad, Gujarat, India; 4.Banaras Hindu Univ, Inst Environm & Sustainable Dev, Varanasi, Uttar Pradesh, India |
推荐引用方式 GB/T 7714 | Bikkina, Srinivas,Andersson, August,Ram, Kirpa,et al. Carbon isotope-constrained seasonality of carbonaceous aerosol sources from an urban location (Kanpur) in the Indo-Gangetic Plain[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(9). |
APA | Bikkina, Srinivas.,Andersson, August.,Ram, Kirpa.,Sarin, M. M..,Sheesley, Rebecca J..,...&Gustafsson, Orjan.(2017).Carbon isotope-constrained seasonality of carbonaceous aerosol sources from an urban location (Kanpur) in the Indo-Gangetic Plain.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(9). |
MLA | Bikkina, Srinivas,et al."Carbon isotope-constrained seasonality of carbonaceous aerosol sources from an urban location (Kanpur) in the Indo-Gangetic Plain".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.9(2017). |
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