DOI: 10.1002/2017JD027719
Scopus记录号: 2-s2.0-85045281147
论文题名: Aerosol Optical Depth Over India
作者: David L.M. ; Ravishankara A.R. ; Kodros J.K. ; Venkataraman C. ; Sadavarte P. ; Pierce J.R. ; Chaliyakunnel S. ; Millet D.B.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 7 起始页码: 3688
结束页码: 3703
语种: 英语
英文关键词: aerosols
; black carbon
; dust
; GEOS-Chem
; India
; optical depth
Scopus关键词: aerosol
; atmospheric modeling
; black carbon
; dust
; EOS
; MODIS
; optical depth
; organic carbon
; seasonal variation
; spatial variation
; troposphere
; Gangetic Plain
; Howard County [Indiana]
; India
; Indiana
; United States
英文摘要: Tropospheric aerosol optical depth (AOD) over India was simulated by Goddard Earth Observing System (GEOS)-Chem, a global 3-D chemical-transport model, using SMOG (Speciated Multi-pOllutant Generator from Indian Institute of Technology Bombay) and GEOS-Chem (GC) (current inventories used in the GEOS-Chem model) inventories for 2012. The simulated AODs were ~80% (SMOG) and 60% (GC) of those measured by the satellites (Moderate Resolution Imaging Spectroradiometer and Multi-angle Imaging SpectroRadiometer). There is no strong seasonal variation in AOD over India. The peak AOD values are observed/simulated during summer. The simulated AOD using SMOG inventory has particulate black and organic carbon AOD higher by a factor ~5 and 3, respectively, compared to GC inventory. The model underpredicted coarse-mode AOD but agreed for fine-mode AOD with Aerosol Robotic Network data. It captured dust only over Western India, which is a desert, and not elsewhere, probably due to inaccurate dust transport and/or noninclusion of other dust sources. The calculated AOD, after dust correction, showed the general features in its observed spatial variation. Highest AOD values were observed over the Indo-Gangetic Plain followed by Central and Southern India with lowest values in Northern India. Transport of aerosols from Indo-Gangetic Plain and Central India into Eastern India, where emissions are low, is significant. The major contributors to total AOD over India are inorganic aerosol (41–64%), organic carbon (14–26%), and dust (7–32%). AOD over most regions of India is a factor of 5 or higher than over the United States. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114083
Appears in Collections: 气候减缓与适应
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作者单位: Department of Chemistry and Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, India; Institute for Advanced Sustainability Studies, Potsdam, Germany; Department of Soil, Water, and Climate, University of Minnesota, Twin Cities, St. Paul, MN, United States
Recommended Citation:
David L.M.,Ravishankara A.R.,Kodros J.K.,et al. Aerosol Optical Depth Over India[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(7)