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Aerosol pollution and its impact on regional climate during Holi festival inferred from ground-based and satellite remote sensing observations

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  • C. Simha
  • P. Devara
  • S. Saha

Abstract

In this paper, we report some salient features from a suit of special experiments that have been conducted over a coastal site (Mumbai) during February 23–March 03, 2010, encompassing an Indian festival, namely Holi, using solar radiometers and pyranometer. The results of the analysis of observations at the experimental site show higher (more than double) aerosol optical depth, water vapor, and lower down-welling short-wave radiative flux during the festival period. This is considered to be due to anthropogenic activities and associated meteorological conditions at the experimental location. To illustrate further, Angstrom parameters (alpha, denoting the aerosol size distribution, and beta, representing the loading) are examined. These parameters are found to be greater on Holi day as compared to those on the normal (control, pre-, and post-Holi) days, suggesting an increase in accumulation mode (smaller size) particle loading. The aerosol size spectra exhibited bimodal/power-law distribution with a dominant peak, modulated by anthropogenic activities, involving local and long-range transport of dust and smoke (emanated from biomass-burning) aerosols, which is consistent with MODIS satellite observations. The aerosol direct radiative forcing estimation indicated cooling at the bottom of the atmosphere. Copyright Springer Science+Business Media Dordrecht 2013

Suggested Citation

  • C. Simha & P. Devara & S. Saha, 2013. "Aerosol pollution and its impact on regional climate during Holi festival inferred from ground-based and satellite remote sensing observations," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 69(1), pages 889-903, October.
    • Handle: RePEc:spr:nathaz:v:69:y:2013:i:1:p:889-903
    DOI: 10.1007/s11069-013-0743-6
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    Cited by:

    1. Ramesh P. Singh & Sarvan Kumar & Abhay K. Singh, 2018. "Elevated Black Carbon Concentrations and Atmospheric Pollution around Singrauli Coal-Fired Thermal Power Plants (India) Using Ground and Satellite Data," IJERPH, MDPI, vol. 15(11), pages 1-17, November.

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