DOI: 10.1016/j.atmosenv.2014.08.061
Scopus记录号: 2-s2.0-84906829149
论文题名: Aerosol radiative forcing over a high-altitude station Merak, in the trans-Himalayan region during advection of anthropogenic events from the Indo-Gangetic Plain
作者: Ningombam S ; S ; , Bagare S ; P ; , Srivastava A ; K ; , Sohn B ; J ; , Song H ; -J ; , Larson E
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 98 起始页码: 253
结束页码: 259
语种: 英语
英文关键词: Absorbing aerosols
; Anthropogenic aerosols
; Atmospheric forcing
; Fine-mode
; Heating rate
Scopus关键词: Advection
; Arid regions
; Atmospheric radiation
; Heating rate
; Stars
; Absorbing aerosol
; Aerosol optical depths
; Aerosol optical property
; Aerosol radiative forcing
; Anthropogenic aerosols
; Atmospheric circulation
; Atmospheric forcing
; Fine-mode
; Indo-Gangetic Plains
; Atmospheric aerosols
; Heating rate
; advection
; aerosol
; atmospheric pollution
; dual economy
; optical property
; radiative forcing
; atmospheric forcing
; dust
; heating
; optical depth
; size distribution
; advection
; aerosol
; altitude
; article
; dust
; glacier
; heating
; melting point
; optical depth
; priority journal
; radiative forcing
; altitude
; Article
; atmosphere
; China
; India
; indo gangetic plain
; meteorological phenomena
; warming
; Gangetic Plain
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: Advection of anthropogenic aerosols from the Indo-Gangetic Plain (IGP) and dust aerosols from distant deserts towards a high-altitude station Merak, in the trans-Himalayan region are reported during June-July 2011. In order to differentiate the advection event, aerosol optical properties were examined during aged background conditions at the site. During the aged background conditions, aerosol optical depth (AOD at 500nm) and Angstrom exponent (α) at the station were ~0.06 and 1.36, respectively which were increased to 0.13 and 1.62, respectively during the advection event. Further, a strong signature of fine-mode aerosol volume size distribution, dominated by absorbing aerosols, was observed during the advection event. The average atmospheric forcing during the aged background condition was found to be 0.57Wm-2 (with corresponding heating rate of 0.05Kday-1) and these results were enhanced to 2.58Wm-2 (with corresponding heating rate of 0.22Kday-1) during the advection event. The present study reveals that during the advection event, heating rate in the atmosphere was increased by about four times than the aged background condition. Such atmospheric warming in the region may influence the melting of the Himalayan glaciers and consequently it may effect the local atmospheric circulation. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81278
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Indian Institute of Astrophysics, 2nd Block Koramangala, Bangalore, Karnataka 560034, India; Indian Institute of Tropical Meteorology, (New Delhi Branch) Prof. Ram Nath Vij Marg, New Delhi 110060, India; School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO 80309, United States
Recommended Citation:
Ningombam S,S,, Bagare S,et al. Aerosol radiative forcing over a high-altitude station Merak, in the trans-Himalayan region during advection of anthropogenic events from the Indo-Gangetic Plain[J]. Atmospheric Environment,2014-01-01,98