globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosres.2019.03.003
Scopus记录号: 2-s2.0-85062464125
论文题名:
Identification of absorbing aerosol types at a site in the northern edge of Indo-Gangetic Plain and a polluted valley in the foothills of the central Himalayas
作者: Rupakheti D.; Kang S.; Rupakheti M.; Cong Z.; Panday A.K.; Holben B.N.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2019
卷: 223
起始页码: 15
结束页码: 23
语种: 英语
英文关键词: Absorbing aerosols ; Aerosol types ; Biomass burning ; Central Himalayas ; Mostly BC ; Urban industrial
Scopus关键词: Refractive index ; Absorbing aerosol ; Aerosol types ; Biomass-burning ; Himalayas ; Mostly BC ; Urban industrial ; Atmospheric aerosols
英文摘要: Identification of atmospheric aerosol types and characterization of absorbing aerosols, based on AErosol RObotic NETwork (AERONET) data collected during 2013–2014 over two sites in Nepal: Lumbini in the northernmost part of central Indo-Gangetic Plain (IGP) and Kathmandu Valley in foothills of the central Himalayas, have been conducted in the present study. The relationship between four aerosol parameters; Extinction Angstrom Exponent (EAE), Absorption Angstrom Exponent (AAE), Single Scattering Albedo (SSA) and Real Refractive Index (RRI) was analyzed to study the aerosol types. This resulted in the identification of two types of aerosols concerning their origin: biomass burning and urban/industrial mix. Furthermore, to understand the absorbing aerosol types, the relationship between aerosol size parameters; Fine Mode Fraction (FMF) and Angstrom Exponent (AE), and aerosol absorption characteristics; SSA and AAE were investigated. In regards to the absorbing aerosol types, ‘Mostly BC’ was the dominant absorbing aerosol, over both sites, with comparatively negligible contribution from other absorbing aerosol types such as dust. The aerosol subtypes obtained from satellite-borne CALIPSO instrument supported the results derived from the AERONET data. The CALIPSO images also indicated that the aerosols over the foothills of the Himalayas could extend to the height of >5 km above the ground, which could be transported towards the Himalayan and Tibetan Plateau (HTP) region with sensitive ecosystems. The multi-sites based study of long-term records is required to elucidate the nature and trends of aerosols in the HTP region and any perturbation to the atmospheric environment and other environments in this region. © 2019 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122270
Appears in Collections:气候变化事实与影响

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作者单位: State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Institute for Advanced Sustainability Studies (IASS), Potsdam, Germany; Himalayan Sustainability Institute (HIMSI), Kathmandu, Nepal; Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; International Centre for Integrated Mountain Development (ICIMOD), Lalitpur, Nepal; NASA Goddard Space Flight Center, Greenbelt, MD, United States

Recommended Citation:
Rupakheti D.,Kang S.,Rupakheti M.,et al. Identification of absorbing aerosol types at a site in the northern edge of Indo-Gangetic Plain and a polluted valley in the foothills of the central Himalayas[J]. Atmospheric Research,2019-01-01,223
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