TY - JOUR
T1 - Influence of natural and anthropogenic emissions on aerosol optical properties over a tropical urban site - A study using sky radiometer and satellite data
AU - Badarinath, K. V.S.
AU - Goto, D.
AU - Kharol, Shailesh Kumar
AU - Mahalakshmi, D. V.
AU - Sharma, Anu Rani
AU - Nakajima, T.
AU - Hashimoto, M.
AU - Takemura, T.
N1 - Funding Information:
The authors thank Director of NRSC and Deputy Director (RS&GIS-AA) for necessary help at various stages of this work and ISRO-GBP for funding the project. The authors express their sincere thanks to Dr. Diehl and AeroCom project for providing emission data sets. The reanalysis data from NCEP/OAR/ESRL PSD, Boulder, Colorado, USA, and the HadISST data from Hadley Centre, UK Met Office are gratefully acknowledged. The model simulations were performed using the National Institute for Environmental Studies, Japan, supercomputer system (NEC SX-8R/128M16). A part of the authors were supported by projects from JAXA/EarthCARE , MEXT/VL for Climate System Diagnostics, MOE/Global Environment Research Fund B-083, NIES/GOSAT , and JST/CREST .
PY - 2011/4
Y1 - 2011/4
N2 - Atmospheric aerosols are important aspects of climate research due to their impact on radiative forcing. In the present study, the aerosol optical depth (AOD), the Ångström exponent (α) and the single scattering albedo (SSA) over the urban region of Hyderabad, India, were examined using Sun/Sky radiometer measurements during January-December, 2008. AOD showed higher values on certain Julian days coinciding with the occurrence of wintertime dust storm events in the Gulf Region and biomass burning due to forest fires over Indian Region. The AOD values during wintertime dust event are about ~55% higher than those on normal days. The SSAs show positive and negative trends in α (R2=0.71) and black carbon (BC) aerosols (R2=0.44), respectively. The aerosol size distribution shows a bimodal pattern with fine (~0.15μm) and coarse (~>7μm) mode during January-December, 2008. The MODIS AOD showed positive correlation with sky radiometer-derived AOD values (R2=0.68).
AB - Atmospheric aerosols are important aspects of climate research due to their impact on radiative forcing. In the present study, the aerosol optical depth (AOD), the Ångström exponent (α) and the single scattering albedo (SSA) over the urban region of Hyderabad, India, were examined using Sun/Sky radiometer measurements during January-December, 2008. AOD showed higher values on certain Julian days coinciding with the occurrence of wintertime dust storm events in the Gulf Region and biomass burning due to forest fires over Indian Region. The AOD values during wintertime dust event are about ~55% higher than those on normal days. The SSAs show positive and negative trends in α (R2=0.71) and black carbon (BC) aerosols (R2=0.44), respectively. The aerosol size distribution shows a bimodal pattern with fine (~0.15μm) and coarse (~>7μm) mode during January-December, 2008. The MODIS AOD showed positive correlation with sky radiometer-derived AOD values (R2=0.68).
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U2 - 10.1016/j.atmosres.2011.01.003
DO - 10.1016/j.atmosres.2011.01.003
M3 - Article
AN - SCOPUS:79951943088
SN - 0169-8095
VL - 100
SP - 111
EP - 120
JO - Atmospheric Research
JF - Atmospheric Research
IS - 1
ER -
