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Radiative impact of fireworks at a tropical Indian location: A case study

Singh, BP and Srivastava, AK and Tiwari, S and Singh, S and Singh, RK and Bisht, DS and Lal, DM and Singh, AK and Mall, RK and Srivastava, MK (2014) Radiative impact of fireworks at a tropical Indian location: A case study. Advances in Meteorology, 2014.

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During Diwali festival, extensive burning of crackers and fireworks is made. Weeklong intensive observational campaign for aerosol study was carried out at a representative urban location in the eastern Indo-Gangetic Plain (IGP), Varanasi (25.3°N, 83.0°E), from October 29 to November 04, 2005 (Diwali on November 01, 2005), to investigate behavioral change of aerosol properties and radiative forcing between firework affected and nonaffected periods. Results show a substantial increase (27) in aerosol optical depth, aerosol absorption coefficients, and aerosol scattering coefficients during affected period as compared to non-affected periods. Magnitudes of radiative forcing at top of atmosphere during affected and non-affected periods are found to be +10 ± 1 and +12 ± 1 Wm-2, respectively, which are -31 ± 7 and -17 ± 5 Wm-2, respectively, at surface. It suggests an additional cooling of 20 at top of atmosphere, 45 cooling at surface, and additional atmospheric heating of 0.23 Kday-1 during fireworks affected period, which is 30 higher than the non-affected period average.

Item Type: Article
Additional Information: Copyright © 2014 B. P. Singh et al. This is an open access article distributed under the Creative Commons Attribution License,which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 04 Dec 2014 09:32
Last Modified: 04 Dec 2014 09:32

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