Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2018.06.024 |
Characterization of atmospheric Black Carbon over a semi-urban site of Southeast India: Local sources and long-range transport | |
Prasad, P.1; Raman, M. Roja1; Ratnam, M. Venkat2; Chen, Wei-Nai3; Rao, S. Vijaya Bhaskara1; Gogoi, Mukunda M.4; Kompalli, Sobhan Kumar4; Kumar, K. Sarat5; Babu, S. Suresh4 | |
2018-11-15 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 213页码:411-421 |
文章类型 | Article |
语种 | 英语 |
国家 | India; Taiwan |
英文摘要 | Continuous measurements of Black Carbon (BC) mass concentration using an advanced multi wavelength Aethalometer (AE-33) during January-December 2016 were carrried out, for the first time, at the premises of KL University, Vijayawada (16.44 degrees N, 80.62 degrees E, 30 m amsl), a semi-urban site in the southeast India. The estimates of the percentage contribution of Biomass Burning (BB%) aerosols to total BC concentration is utilised to understand the contribution of anthropogenic activities over the observational site. In this context, the diurnal and seasonal variation of BC mass concentrations and BB (%) contributions have been investigated and the possible sources are examined. A significant diurnal variation in BC concentration is observed with two prominent peaks, one occuring in the morning hours (around 0800-0900 IST) and the other occuring in the evening hours (around 2000 IST). Annually, the maximum BC concentration is observed during November (6.88 +/- 156 mu g m(-3)) and minimum during August (1.7 +/- 0.52 mu g m(-3)) over this location. On a seasonal scale, mean BC mass concentration is highest during winter (DJF, 4.68 +/- 1.32 mu g m(-3)) followed by post-monsoon (SON, 4.52 +/- 2.36 mu g(-3)), summer (MAM, 2.44 +/- 0.8 mu g m(-3)) and lowest during monsoon (JJA, 183 +/- 0.61 mu g m(-3)). The higher BB (%) contribution is observed during summer (25.21 +/- 7.02%), while the contribution is minimum in monsoon season (16.83 +/- 4.15%). Examination of the spectral properties of aerosol absorption in terms of angstrom ngstrom exponent (alpha) indicates that the major contributor of BC over this location is biomass burning (alpha similar to 1.66 +/- 0.06). This is supported by the higher number of fire counts (obtained from Moderate Resolution Imaging Spectroradiometer-MODIS onboard Terra satellite) in and around the study region during winter and summer revealing the higher contribution of BB aerosols. The concentration weighted trajectories (CWT) analysis (based on 5-day airmass back trajectories arriving the receptor site at an altitude of 500 m AGL) reveals that synoptic airmasses arriving from the continental regions located northeast of the observational sites mainly influence the BC properties over Vijayawada. |
英文关键词 | Black Carbon Biomass burning angstrom ngstrom exponent Aethalometer |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442169800035 |
WOS关键词 | HIGH-ALTITUDE LOCATION ; SOURCE APPORTIONMENT ; AEROSOL PROPERTIES ; RADIATIVE IMPACT ; ABSORPTION ; AETHALOMETER ; STATION ; BIOMASS ; LIGHT ; LAYER |
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/38511 |
专题 | 地球科学 |
作者单位 | 1.SV Univ, Dept Phys, Tirupati 517502, Andhra Prades, India; 2.Natl Atmospher Res Lab, Tirupati 517502, Andhra Prades, India; 3.Acad Sinica, RCEC, Taipei 115, Taiwan; 4.VSSC, Space Phys Lab, Trivandrum 695022, Kerala, India; 5.KL Univ, Vaddeswaram 520002, India |
推荐引用方式 GB/T 7714 | Prasad, P.,Raman, M. Roja,Ratnam, M. Venkat,et al. Characterization of atmospheric Black Carbon over a semi-urban site of Southeast India: Local sources and long-range transport[J]. ATMOSPHERIC RESEARCH,2018,213:411-421. |
APA | Prasad, P..,Raman, M. Roja.,Ratnam, M. Venkat.,Chen, Wei-Nai.,Rao, S. Vijaya Bhaskara.,...&Babu, S. Suresh.(2018).Characterization of atmospheric Black Carbon over a semi-urban site of Southeast India: Local sources and long-range transport.ATMOSPHERIC RESEARCH,213,411-421. |
MLA | Prasad, P.,et al."Characterization of atmospheric Black Carbon over a semi-urban site of Southeast India: Local sources and long-range transport".ATMOSPHERIC RESEARCH 213(2018):411-421. |
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