DOI: 10.1016/j.atmosenv.2017.05.043
Scopus记录号: 2-s2.0-85020026836
论文题名: Estimation of shortwave direct aerosol radiative forcing at four locations on the Indo-Gangetic plains: Model results and ground measurement
作者: Bibi H ; , Alam K ; , Bibi S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 163 起始页码: 166
结束页码: 181
语种: 英语
英文关键词: aerosol radiative forcing
; Aerosol radiative forcing efficiency
; Heating rate
; Indo-Gangetic plains
Scopus关键词: Atmospheric aerosols
; Atmospheric radiation
; Atmospheric thermodynamics
; Efficiency
; Heating rate
; Internet protocols
; Location
; Regression analysis
; Solar radiation
; Aerosol radiative forcing
; Aerosol robotic networks
; Direct aerosol radiative forcing
; Indo-Gangetic Plains
; National Oceanic and Atmospheric Administration
; Radiative characteristics
; Single scattering albedo
; Spatio-temporal variation
; Aerosols
; AERONET
; aerosol
; aerosol property
; albedo
; atmospheric forcing
; estimation method
; heating
; optical depth
; parameter estimation
; radiative forcing
; shortwave radiation
; spectral analysis
; absorption
; aerosol
; air
; albedo
; Article
; atmosphere
; heating
; measurement
; optical depth
; priority journal
; radiative forcing
; season
; seasonal variation
; summer
; winter
; Gangetic Plain
; India
; Jaipur
; Kanpur
; Karachi
; Lahore
; Pakistan
; Punjab [Pakistan]
; Rajasthan
; Sind
; Uttar Pradesh
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: This study provides observational results of aerosol optical and radiative characteristics over four locations in IGP. Spectral variation of Aerosol Optical Depth (AOD), Single Scattering Albedo (SSA) and Asymmetry Parameter (AP) were analysed using AErosol RObotic NETwork (AERONET) data. The analysis revealed that coarse particles were dominant in summer and pre-monsoon, while fine particles were more pronounced in winter and post-monsoon. Furthermore, the spatio-temporal variations of Shortwave Direct Aerosol Radiative Forcing (SDARF) and Shortwave Direct Aerosol Radiative Forcing Efficiency (SDARFE) at the Top Of Atmosphere (TOA), SURface (SUR) and within ATMosphere (ATM) were calculated using SBDART model. The atmospheric Heating Rate (HR) associated with SDARFATM were also computed. It was observed that the monthly averaged SDARFTOA and SDARFSUR were found to be negative leading to positive SDARFATM during all the months over all sites. The increments in net atmospheric forcing lead to maximum HR in November–December and May. The seasonal analysis of SDARF revealed that SDARFTOA and SDARFSUR were negative during all seasons. The SW atmospheric absorption translates to highest atmospheric HR during summer over Karachi and during pre-monsoon over Lahore, Jaipur and Kanpur. Like SDARF, the monthly and seasonal variations of SDARFETOA and SDARFESUR were found to be negative, resulting in positive atmospheric forcing. Additionally, to compare the model estimated forcing against AERONET derived forcing, the regression analysis of AERONET-SBDART forcing were carried out. It was observed that SDARF at SUR and TOA showed relatively higher correlation over Lahore, moderate over Jaipur and Kanpur and lower over Karachi. Finally, the analysis of National Oceanic and Atmospheric Administration Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model revealed that air masses were arriving from multiple source locations. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82357
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Physics, University of Peshawar, Khyber Pakhtunkhwa, Pakistan
Recommended Citation:
Bibi H,, Alam K,, Bibi S. Estimation of shortwave direct aerosol radiative forcing at four locations on the Indo-Gangetic plains: Model results and ground measurement[J]. Atmospheric Environment,2017-01-01,163