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Short wave Aerosol Radiative Forcing estimates over a semi urban coastal environment in south-east India and validation with surface flux measurements
Short wave Aerosol Radiative Forcing estimates over a semi urban coastal environment in south-east India and validation with surface flux measurements
- Source :
- Atmospheric Environment. 125:418-428
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- The short wave direct Aerosol Radiative Forcing (ARF) at a semi urban coastal location near Chennai (12.81 °N, 80.03 °E, ∼45 m amsl), a mega city on the east coast of India has been estimated for all the four seasons in the year 2013 using the SBDART (Santa Barbara Discrete ordinate Atmospheric Radiative Transfer) model. As inputs to this model, measured aerosol parameters together with modeled aerosol and atmospheric parameters are used. The ARF in the atmosphere is found to be higher in the pre-monsoon and winter seasons compared to the other seasons whereas at the surface, it is found to be higher in the south-west (SW) monsoon and winter seasons. The estimated ARF values are compared with those reported over other locations in India. The effect of Relative Humidity on ARF has been investigated for the first time in the present study. It is found that the ARF increases with increasing RH in the SW monsoon and winter seasons. An unique feature of the present study is the comparison of the net surface short wave fluxes estimated from the model (SBDART) and measured fluxes using CNR 4 net radiometer. This comparison between the estimated and measured fluxes showed good agreement, providing a ‘closure’ for the estimates.
- Subjects :
- Atmospheric Science
010504 meteorology & atmospheric sciences
Single-scattering albedo
010501 environmental sciences
Monsoon
Atmospheric sciences
01 natural sciences
Aerosol
Atmosphere
Net radiometer
Flux (metallurgy)
Climatology
Radiative transfer
Environmental science
Relative humidity
0105 earth and related environmental sciences
General Environmental Science
Subjects
Details
- ISSN :
- 13522310
- Volume :
- 125
- Database :
- OpenAIRE
- Journal :
- Atmospheric Environment
- Accession number :
- edsair.doi...........4a25b924438f66a4398b81cb4cdbc34f
- Full Text :
- https://doi.org/10.1016/j.atmosenv.2015.08.085