DOI: 10.1007/s00382-016-3384-0
Scopus记录号: 2-s2.0-84991079312
论文题名: Direct radiative effects of aerosols over South Asia from observations and modeling
作者: Nair V.S. ; Babu S.S. ; Manoj M.R. ; Moorthy K.K. ; Chin M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 49, 期: 4 起始页码: 1411
结束页码: 1428
语种: 英语
英文关键词: Aerosol radiative effect
; Anthropogenic aerosols
; Black carbon
; Dust
英文摘要: Quantitative assessment of the seasonal variations in the direct radiative effect (DRE) of composite aerosols as well as the constituent species over the Indian sub continent has been carried out using a synergy of observations from a dense network of ground based aerosol observatories and modeling based on chemical transport model simulations. Seasonal variation of aerosol constituents depict significant influence of anthropogenic aerosol sources in winter and the dominance of natural sources in spring, even though the aerosol optical depth doesn’t change significantly between these two seasons. A significant increase in the surface cooling and atmospheric warming has been observed as season changes from winter (DRESUR = −28 ± 12 W m−2 and DREATM = +19.6 ± 9 W m−2) to spring (DRESUR = −33.7 ± 12 W m−2 and DREATM = +27 ± 9 W m−2). Interestingly, springtime aerosols are more absorptive in nature compared to winter and consequently the aerosol induced diabatic heating of the atmosphere goes as high as ~1 K day−1 during spring, especially over eastern India. The atmospheric DRE due to dust aerosols (+14 ± 7 W m−2) during spring overwhelms that of black carbon DRE (+11.8 ± 6 W m−2) during winter. The DRE at the top of the atmosphere is mostly governed by the anthropogenic aerosols during all the seasons. The columnar aerosol loading, its anthropogenic fraction and radiative effects shows a steady increase with latitude across Indian mainland leading to a larger aerosol-induced atmospheric warming during spring than in winter. © 2016, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53122
Appears in Collections: 过去全球变化的重建
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作者单位: Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram, India; ISRO Headquarters, Bangalore, India; NASA Goddard Space Flight Center, Greenbelt, MD, United States
Recommended Citation:
Nair V.S.,Babu S.S.,Manoj M.R.,et al. Direct radiative effects of aerosols over South Asia from observations and modeling[J]. Climate Dynamics,2017-01-01,49(4)