Vol. 8, Special Issue 6 (2020)
Deterioration of air quality and source of apportionment in Delhi during Deepawali Festival, India
Author(s): Mohammad Arif, Shagufta Parveen and Nemit Verma
Abstract: The enhance concentrations were reported in festival time over Delhi, India because of fire crackers in Deepawali period and biomass blazing in north-west region of India which severely influence climate situations, air classes and visibility. The mass concentrations of PM10 vary from 654 to 833 μgm-3 with a mean value of 756 μgm-3 and PM2.5 varies from 107 to 700 μgm-3 with a mean value of 483 μgm-3 during the pre-Deepawali day (Nov. 9, 2020). However, the mass concentrations of PM10 vary from 533 to 953 μgm-3 with a mean value of 691.66 μgm-3 and PM2.5 varies from 120.0 to 865.0 μgm-3 with a mean value of 440.66 μgm-3 during the Deepawaly day (Nov. 14, 2020). During the both pre-Deepawali day and Deepawaly day, the mass concentration of both PM10 and PM2.5 were much higher than the threshold limit. During the Deepawali (Nov.14, 2020), a 40% enhancement in SO2 and 3% enhancement in NO2 was observed in the Delhi. The lowest mixing height, wind speed ad temperature were observed during the Deepawali day (Nov. 14, 2020) which play a significant role in low dispersion of air pollutants and high pollution level in Delhi. The backward trajectories are coming at Delhi from the high biomass/crop residue burning areas of Northwest Countries (Pakistan and Afghanistan), northern region of India (Punjab and Haryana) during the Deepawali days that raise the surface concentration of PM2.5 and PM10. The significant deterioration in the air quality of Delhi is observed in the Deepawali days because of fire cracking, transportation, low mixing height and temperature. The Air Quality Index (AQI) in Delhi was mostly reported as ‘Poor to Sesvere’ in the both pre Deepawali (Nov. 9, 2020) and Deepawali (Nov. 14, 2020).
DOI: 10.22271/chemi.2020.v8.i6c.11069
Pages: 167-174 | 499 Views 81 Downloads
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How to cite this article:
Mohammad Arif, Shagufta Parveen and Nemit Verma. Deterioration of air quality and source of apportionment in Delhi during Deepawali Festival, India. International Journal of Chemical Studies. 2020; 8(6): 167-174. DOI: 10.22271/chemi.2020.v8.i6c.11069
