Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2019.04.028 |
Estimates of reactive trace gases (NMVOCs, CO and NOx) and their ozone forming potentials during forest fire over Southern Himalayan region | |
Kumar, Amit1,2; Bali, Kunal1,3; Singh, Sachchidanand1,4; Naja, Manish5; Mishra, Amit Kumar1,2 | |
2019-10-01 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2019 |
卷号 | 227页码:41-51 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | In the present study, emission of trace gases [non-methane volatile organic compounds (NMVOCs), carbon monoxide (CO) and oxides of nitrogen (NOx)], their ozone forming potentials and ozone sensitivities have been investigated during the forest fire period (2003-2016) over the Southern Himalayan region. Reanalysis data of Global Fire Assimilation System model is used to retrieve the various parameters such as fire radiative power and emission rates of various trace gases. April 2016 is noticed to be anomalous in terms of fire events in the last fourteen years (2003-2016) over the lower Southern Himalayan region. Our estimation shows major contribution of oxygenated compounds (55.2%) amidst all NMVOCs. Mean CO and NOx emission rates are 533.81 and 13.66 mg/m(2)/day, respectively during the forest fire of April months for fourteen years. The emissions of NMVOCs, CO and NOx increased by 90.4, 110.6 and 132.5% and reaches up to 121.1, 958.3 and 25.3 mg/m(2)/day in April 2016 with respect to non-burning period (April 2015). Ozone forming potentials (OFP) of NMVOCs are also examined using the maximum incremental reactivity (MIR) method, which shows similar to 2 times higher OFP for total NMVOCs during 2016 as compared to 2015. Based on the MIR scale, the contribution of top 10 species to OFP are in the decreasing order of formaldehyde, acetaldehyde, ethane, propene, toluene, butane, isoprene, methanol, pentene and hexane. The ratio of NMVOCs/NOx is < 8, which indicates that the photochemical production of O-3 is mainly controlled by the levels of NMVOCs. The surface observations of ozone and CO from a Himalayan station Nainital also showed substantial increase in concentration during the forest fire of April 2016. Our results are valuable for the better understanding of chemical composition of trace gases, their role in O-3 formation and effective control strategies of O-3 pollution during the forest fire events over the lower Himalayan region. |
英文关键词 | Biomass burning Trace gases NMVOC Ozone formation potential Himalayas |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000472688500004 |
WOS关键词 | VOLATILE ORGANIC-COMPOUNDS ; BIOMASS BURNING EMISSIONS ; AIR-QUALITY ; PARTICULATE-EMISSIONS ; SMOLDERING COMBUSTION ; SOURCE APPORTIONMENT ; COMPOUND EMISSIONS ; ATMOSPHERIC CO2 ; VOC EMISSIONS ; IMPACT |
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/187185 |
专题 | 地球科学 |
作者单位 | 1.CSIR Natl Phys Lab, Environm Sci & Biomed Metrol Div, Dr KS Krishnan Rd, New Delhi 110012, India; 2.Jawaharlal Nehru Univ, Sch Environm Sci, New Delhi 110067, India; 3.Indian Inst Technol, Ctr Atmospher Sci, New Delhi 110016, India; 4.Acad Sci & Innovat Res AcSIR, CSIR Natl Phys Lab Campus, New Delhi 110012, India; 5.Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263002, India |
推荐引用方式 GB/T 7714 | Kumar, Amit,Bali, Kunal,Singh, Sachchidanand,et al. Estimates of reactive trace gases (NMVOCs, CO and NOx) and their ozone forming potentials during forest fire over Southern Himalayan region[J]. ATMOSPHERIC RESEARCH,2019,227:41-51. |
APA | Kumar, Amit,Bali, Kunal,Singh, Sachchidanand,Naja, Manish,&Mishra, Amit Kumar.(2019).Estimates of reactive trace gases (NMVOCs, CO and NOx) and their ozone forming potentials during forest fire over Southern Himalayan region.ATMOSPHERIC RESEARCH,227,41-51. |
MLA | Kumar, Amit,et al."Estimates of reactive trace gases (NMVOCs, CO and NOx) and their ozone forming potentials during forest fire over Southern Himalayan region".ATMOSPHERIC RESEARCH 227(2019):41-51. |
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