Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.5194/acp-18-17669-2018 |
Large contrast in the vertical distribution of aerosol optical properties and radiative effects across the Indo-Gangetic Plain during the SWAAMI-RAWEX campaign | |
Vaishya, Aditya1,4; Babu, Surendran Nair Suresh1; Jayachandran, Venugopalan1; Gogoi, Mukunda M.1; Lakshmi, Naduparambil Bharathan1; Moorthy, Krishnaswamy Krishna2; Satheesh, Sreedharan Krishnakumari2,3 | |
通讯作者 | Vaishya, Aditya |
来源期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:23页码:17669-17685 |
英文摘要 | Measurements of the vertical profiles of the optical properties ( namely the extinction coefficient and scattering and absorption coefficients respectively sigma(ext)=sigma(scat)=sigma(abs)) of aerosols have been made across the Indo-Gangetic Plain (IGP) using an instrumented aircraft operated from three base stations-Jodhpur (JDR), representing the semi-arid western IGP; Varanasi (VNS), the central IGP characterized by significant anthropogenic activities; and the industrialized coastal location in the eastern end of the IGP (Bhubaneswar, BBR)-just prior to the onset of the Indian summer monsoon. The vertical profiles depicted region-specific absorption characteristics, while the scattering characteristics remained fairly uniform across the region, leading to a west-east gradient in the vertical structure of single-scattering albedo (SSA). Integrated from near the ground to 3 km, the highest absorption coefficient and hence the lowest SSA occurred in the central IGP (Varanasi). Size distribution, inferred from the spectral variation of the scattering coefficient, showed a gradual shift from coarse-particle dominance in the western IGP to strong accumulation dominance in the eastern coast with the central IGP coming in between, arising from a change in the aerosol type from a predominantly natural (dust and sea salt) type in the western IGP to a highly anthropogenic type (industrial emissions, fossil fuel and biomass combustion) in the eastern IGP, with the central IGP exhibiting a mixture of both. Aerosol-induced short-wave radiative forcing, estimated using altitude-resolved SSA information, revealed significant atmospheric warming in the central IGP, while a top-of-atmosphere cooling is seen, in general, in the IGP. Atmospheric heating rate profiles, estimated using altitude-resolved SSA and column-averaged SSA, revealed considerable underestimation in the latter case, emphasizing the importance and necessity of having altitude-resolved SSA information as against a single value for the entire column. |
类型 | Article |
语种 | 英语 |
国家 | India |
收录类别 | SCI-E |
WOS记录号 | WOS:000453086100002 |
WOS关键词 | BLACK CARBON ; LIGHT-ABSORPTION ; DUST TRANSPORT ; MINERAL DUST ; URBAN SITE ; BAY ; PARTICLES ; BASIN ; QUANTIFICATION ; HETEROGENEITY |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/207917 |
作者单位 | 1.Vikram Sarabhai Space Ctr, Space Phys Lab, ISRO PO, Thiruvananthapuram, Kerala, India; 2.Indian Inst Sci, Ctr Atmospher & Ocean Sci, Bangalore, Karnataka, India; 3.Indian Inst Sci, Divecha Ctr Climate Change, Bangalore, Karnataka, India; 4.Ahmedabad Univ, Sch Arts & Sci, Ahmadabad, Gujarat, India |
推荐引用方式 GB/T 7714 | Vaishya, Aditya,Babu, Surendran Nair Suresh,Jayachandran, Venugopalan,et al. Large contrast in the vertical distribution of aerosol optical properties and radiative effects across the Indo-Gangetic Plain during the SWAAMI-RAWEX campaign[J],2018,18(23):17669-17685. |
APA | Vaishya, Aditya.,Babu, Surendran Nair Suresh.,Jayachandran, Venugopalan.,Gogoi, Mukunda M..,Lakshmi, Naduparambil Bharathan.,...&Satheesh, Sreedharan Krishnakumari.(2018).Large contrast in the vertical distribution of aerosol optical properties and radiative effects across the Indo-Gangetic Plain during the SWAAMI-RAWEX campaign.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(23),17669-17685. |
MLA | Vaishya, Aditya,et al."Large contrast in the vertical distribution of aerosol optical properties and radiative effects across the Indo-Gangetic Plain during the SWAAMI-RAWEX campaign".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.23(2018):17669-17685. |
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