干旱区生态环境知识资源中心(Arid): Airborne in situ measurements of aerosol size distributions and black carbon across the Indo-Gangetic Plain during SWAAMI-RAWEX

Arid

DOI	10.5194/acp-20-8593-2020
	Airborne in situ measurements of aerosol size distributions and black carbon across the Indo-Gangetic Plain during SWAAMI-RAWEX
	Gogoi, Mukunda Madhab; Jayachandran, Venugopalan Nair; Vaishya, Aditya; Babu, Surendran Nair Suresh; Satheesh, Sreedharan Krishnakumari; Moorthy, Krishnaswamy Krishna
通讯作者	Gogoi, MM
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN	1680-7316
EISSN	1680-7324
出版年	2020
卷号	20 期号:14 页码:8593-8610
英文摘要	During the combined South-West Asian Aerosol-Monsoon Interactions and Regional Aerosol Warming Experiment (SWAAMI-RAWEX), collocated airborne measurements of aerosol number-size distributions in the size (diameter) regime 0.5 to 20 mu m and black carbon (BC) mass concentrations were made across the Indo-Gangetic Plain (IGP), for the first time, from three distinct locations, just prior to the onset of the Indian summer monsoon. These measurements provided an east-west transect of region-specific properties of aerosols as the environment transformed from mostly arid conditions of the western IGP (represented by Jodhpur, JDR) having dominance of natural aerosols to the central IGP (represented by Varanasi, VNS) having very high anthropogenic emissions, to the eastern IGP (represented by the coastal station Bhubaneswar, BBR) characterized by a mixture of the IGP outflow and marine aerosols. Despite these, the aerosol size distribution revealed an increase in coarse mode concentration and coarse mode mass fraction (fractional contribution to the total aerosol mass) with the increase in altitude across the entire IGP, especially above the well-mixed region. Consequently, both the mode radii and geometric mean radii of the size distributions showed an increase with altitude. However, near the surface and within the atmospheric boundary layer (ABL), the features were specific to the different subregions, with the highest coarse mode mass fraction (F-MC similar to 72 %) in the western IGP and highest accumulation fraction in the central IGP with the eastern IGP in between. The elevated coarse mode fraction is attributed to mineral dust load arising from local production as well as due to advection from the west. This was further corroborated by data from the Cloud-Aerosol Transport System (CATS) on board the International Space Station (ISS), which also revealed that the vertical extent of dust aerosols reached as high as 5 km during this period. Mass concentrations of BC were moderate (similar to 1 mu g m(-3)) with very little altitude variation up to 3.5 km, except over VNS where very high concentrations were seen near the surface and within the ABL. The BC-induced atmospheric heating rate was highest near the surface at VNS (similar to 0.81 Kd(-1)), while showing an increasing pattern with altitude at BBR (similar to 0.35 Kd(-1) at the ceiling altitude).
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000554945900004
WOS关键词	MINERAL DUST ; OPTICAL-PROPERTIES ; ALTITUDE PROFILES ; ABSORPTION ; QUANTIFICATION ; AETHALOMETER ; INSTRUMENT ; PREMONSOON ; ALGORITHMS ; EMISSIONS
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/2XILL650/325365
作者单位	[Gogoi, Mukunda Madhab; Jayachandran, Venugopalan Nair; Babu, Surendran Nair Suresh] Vikram Sarabhai Space Ctr, Space Phys Lab, Thiruvananthapuram 695022, Kerala, India; [Vaishya, Aditya] Ahmedabad Univ, Sch Arts & Sci, Ahmadabad 380009, Gujarat, India; [Vaishya, Aditya] Ahmedabad Univ, Global Ctr Environm & Energy, Ahmadabad 380009, Gujarat, India; [Satheesh, Sreedharan Krishnakumari; Moorthy, Krishnaswamy Krishna] Indian Inst Sci, Ctr Atmospher & Ocean Sci, Bengaluru 560012, India; [Satheesh, Sreedharan Krishnakumari] Indian Inst Sci, Divecha Ctr Climate Change, Bengaluru 560012, India
推荐引用方式 GB/T 7714	Gogoi, Mukunda Madhab,Jayachandran, Venugopalan Nair,Vaishya, Aditya,et al. Airborne in situ measurements of aerosol size distributions and black carbon across the Indo-Gangetic Plain during SWAAMI-RAWEX[J],2020,20(14):8593-8610.
APA	Gogoi, Mukunda Madhab,Jayachandran, Venugopalan Nair,Vaishya, Aditya,Babu, Surendran Nair Suresh,Satheesh, Sreedharan Krishnakumari,&Moorthy, Krishnaswamy Krishna.(2020).Airborne in situ measurements of aerosol size distributions and black carbon across the Indo-Gangetic Plain during SWAAMI-RAWEX.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(14),8593-8610.
MLA	Gogoi, Mukunda Madhab,et al."Airborne in situ measurements of aerosol size distributions and black carbon across the Indo-Gangetic Plain during SWAAMI-RAWEX".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.14(2020):8593-8610.