Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.atmosres.2015.04.022 |
Identification of aerosol types over an urban site based on air-mass trajectory classification | |
Pawar, G. V.1; Devara, P. C. S.2; Aher, G. R.1 | |
通讯作者 | Aher, G. R. |
来源期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2015 |
卷号 | 164页码:142-155 |
英文摘要 | Columnar aerosol properties retrieved from MICROTOPS II Sun Photometer measurements during 2010-2013 over Pune (18 degrees 32’N; 73 degrees 49’E, 559 m amsl), a tropical urban station in India, are analyzed to identify aerosol types in the atmospheric column. Identification/classification is carried out on the basis of dominant airflow patterns, and the method of discrimination of aerosol types on the basis of relation between aerosol optical depth (AOD(500) (nm),) and angstrom ngstrom exponent (AE, alpha). Five potential advection pathways viz., NW/N, SW/S, N, SE/E and L have been identified over the observing site by employing the NOAA-HYSPLIT air mass back trajectory analysis. Based on AE against AOD(500 nm), scatter plot and advection pathways followed five major aerosol types viz., continental average (CA), marine continental average (MCA), urban/industrial and biomass burning (UB), desert dust (DD) and indeterminate or mixed type (MT) have been identified. In winter, sector SE/E, a representative of air masses traversed over Bay of Bengal and Eastern continental Indian region has relatively small AOD (tau(p lambda) = 0.43 +/- 0.13) and high AE (alpha = 1.19 +/- 0.15). These values imply the presence of accumulation/submicron size anthropogenic aerosols. During pre-monsoon, aerosols from the NW/N sector have high AOD (tau(p lambda) = 0.61 +/- 0.21), and low AE (alpha = 0.54 +/- 0.14) indicating an increase in the loading of coarse-mode particles over Pune. Dominance of UB type in winter season for all the years (i.e. 2010-2013) may be attributed to both local/transported aerosols. During pre-monsoon seasons, MT is the dominant aerosol type followed by UB and DD, while the background aerosols are insignificant. (C) 2015 Elsevier B.V. All rights reserved. |
英文关键词 | AOD angstrom ngstrom exponent Long range transport Air-mass Aerosol types |
类型 | Article |
语种 | 英语 |
国家 | India |
收录类别 | SCI-E |
WOS记录号 | WOS:000358095800014 |
WOS关键词 | LONG-RANGE TRANSPORT ; INDO-GANGETIC BASIN ; INDIAN-OCEAN EXPERIMENT ; OPTICAL-PROPERTIES ; CLUSTER-ANALYSIS ; ATMOSPHERIC AEROSOL ; SIZE DISTRIBUTION ; SAHARAN DUST ; CHEMICAL-CHARACTERIZATION ; MICROPHYSICAL PROPERTIES |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/186143 |
作者单位 | 1.Nowrosjee Wadia Coll, Dept Phys, Atmospher Phys Res Lab, Pune 411001, Maharashtra, India; 2.Amity Univ Haryana Manesar, Amity Ctr Ocean Atmospher Sci & Technol, Gurgaon 122413, India |
推荐引用方式 GB/T 7714 | Pawar, G. V.,Devara, P. C. S.,Aher, G. R.. Identification of aerosol types over an urban site based on air-mass trajectory classification[J],2015,164:142-155. |
APA | Pawar, G. V.,Devara, P. C. S.,&Aher, G. R..(2015).Identification of aerosol types over an urban site based on air-mass trajectory classification.ATMOSPHERIC RESEARCH,164,142-155. |
MLA | Pawar, G. V.,et al."Identification of aerosol types over an urban site based on air-mass trajectory classification".ATMOSPHERIC RESEARCH 164(2015):142-155. |
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