Impact of biomass burning on aerosol properties over tropical urban region of Hyderabad, India

Details Impact of biomass burning on aerosol properties over tropical urban region of Hyderabad, India Impact of biomass burning on aerosol properties over tropical urban region of Hyderabad, India

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3320801k&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 20, CiteID L20801

Physics

10

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions (0426, 1610), Atmospheric Composition And Structure: Pollution: Urban And Regional (0305, 0478, 4251), Atmospheric Composition And Structure: Troposphere: Composition And Chemistry, Atmospheric Composition And Structure: Radiation: Transmission And Scattering

Scientific paper

Biomass burning is identified as a major source of atmospheric pollution giving rise to the release of large quantities of gaseous emissions and particulate matter. The present study aims at analyzing the impacts of biomass burning on aerosol loading over urban area of Hyderabad, India using synchronous measurements of Aerosol Optical Depth (AOD), solar irradiance in different wavelength bands, aerosol particle size distribution measurements and black carbon (BC) aerosol mass concentration. Temporal variation of AOD and aerosol index (AI) correlated with occurrence of forest fires as derived from DMSP-OLS and MODIS satellite data. BC values showed good correlation with total aerosol number density and showed patterns correlating with wind direction. Radiative forcing estimated from synchronous measurements of AOD and ground reaching broadband solar irradiance suggested -12.5W/m 2 reduction per 0.1 increase in AOD. Diffuse to direct ratio of solar irradiance showed variations correlating with changes in aerosol optical depth.

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