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Carbonaceous aerosol characteristics on the Third Pole: A primary study based on the Atmospheric Pollution and Cryospheric Change (APCC) network
Chen, PF (Chen, Pengfei)1; Kang, SC (Kang, Shichang)1,2; Li, CL (Li, Chaoliu)2,3; Zhang, QG (Zhang, Qianggong)2,3; Guo, JM (Guo, Junming)1; Tripathee, L (Tripathee, Lekhendra)1; Zhang, YA (Zhang, Yuian)1; Li, G (Li, Gang)4; Gul, C (Gul, Chaman)1; Cong, ZY (Cong, Zhiyuan)2,3; Wan, X (Wan, Xin)3; Niu, HW (Niu, Hewen)1; Panday, AK (Panday, Arnico K.)5; Rupakheti, M (Rupakheti, Maheswar)6; Ji, ZM (Ji, Zhenming)7,8,9
Source PublicationENVIRONMENTAL POLLUTION
2019
Volume253Issue:0Pages:49-60
DOI10.1016/j.envpol.2019.06.112
Abstract

Carbonaceous aerosols (CAs) scatter and absorb incident solar radiation in the atmosphere, thereby influencing the regional climate and hydrological cycle, particularly in the Third Pole (TP). Here, we present the characteristics of CAs at 19 observation stations from the Atmospheric Pollution and Cryospheric Change network to obtain a deep understanding of pollutant status in the TP. The organic carbon (OC) and elemental carbon (EC) concentrations decreased noticeably inwards from outside to inland of the TP, consistent with their emission load and also affected by transport process and meteorological condition. Urban areas, such as Kathmandu, Karachi, and Mardan, exhibited extremely high OC and EC concentrations, with low and high values occurring in the monsoon and non-monsoon seasons, respectively. However, remote regions inland the TP (e.g., Nam Co and Ngari) demonstrated much lower OC and EC concentrations. Different seasonal variations were observed between the southern and northern parts of the TP, suggesting differences in the patterns of pollutant sources and in distance from the sources between the two regions. In addition to the influence of long-range transported pollutants from the Indo-Gangetic Plain (IGP), the TP was affected by local emissions (e.g., biomass burning). The OC/EC ratio also suggested that biomass burning was prevalent in the center TP, whereas the marginal sites (e.g., Jomsom, Dhunche, and Laohugou) were affected by fossil fuel combustion from the up-wind regions. The mass absorption cross-section of EC (MAC(EC)) at 632 nm ranged from 6.56 to 14.7 m(2) g(-1), with an increasing trend from outside to inland of the TP. Urban areas had low MAC(EC) values because such regions were mainly affected by local fresh emissions. In addition, large amount of brown carbon can decrease the MAC(EC) values in cities of South Asia. Remote sites had high MAC(EC) values because of the coating enhancement of aerosols.

Subject AreaEnvironmental Sciences
WOS IDWOS:000483406700006
Language英语
Indexed BySCI
KeywordHigh-altitude Site Polycyclic Aromatic-hydrocarbons Tibetan Plateau Concentrations Anthropogenic Black Carbon p 5079 m Light-absorption Kathmandu Valley Source Apportionment Elemental Carbon Organic-carbon
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
Cooperation Status国际
ISSN0269-7491
Department环境变化与地表过程重点实验室
URL查看原文
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9149
Collection图书馆
Corresponding AuthorKang, SC (Kang, Shichang)
Affiliation1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, DongGangXi Rd, Lanzhou 730000, Gansu, Peoples R China;
2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100085, Peoples R China;
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China;
4.Lanzhou Meteorol Bur, Arid Meteorol Res Inst, Lanzhou 730000, Gansu, Peoples R China;
5.Int Ctr Integrated Mt Dev, Kathmandu 44700, Nepal;
6.Inst Adv Sustainabil Studies, D-14467 Potsdam, Germany;
7.Sun Yat Sen Univ, Sch Atmospher Sci, Guangzhou 510275, Guangdong, Peoples R China;
8.Sun Yat Sen Univ, Guangdong Prov Key Lab Climate Change & Nat Disas, Guangzhou 510275, Guangdong, Peoples R China;
9.Southern Lab Ocean Sci & Engn Guangdong Zhuhai, Zhuhai 519000, Peoples R China.
Recommended Citation
GB/T 7714
Chen, PF ,Kang, SC ,Li, CL ,et al. Carbonaceous aerosol characteristics on the Third Pole: A primary study based on the Atmospheric Pollution and Cryospheric Change (APCC) network[J]. ENVIRONMENTAL POLLUTION,2019,253(0):49-60.
APA Chen, PF .,Kang, SC .,Li, CL .,Zhang, QG .,Guo, JM .,...&Ji, ZM .(2019).Carbonaceous aerosol characteristics on the Third Pole: A primary study based on the Atmospheric Pollution and Cryospheric Change (APCC) network.ENVIRONMENTAL POLLUTION,253(0),49-60.
MLA Chen, PF ,et al."Carbonaceous aerosol characteristics on the Third Pole: A primary study based on the Atmospheric Pollution and Cryospheric Change (APCC) network".ENVIRONMENTAL POLLUTION 253.0(2019):49-60.
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