TOC

Fractal dimension of natural objects from nano-to-macro scale: an intrinsic property of material

Impact of road-space-rationing method on regional air quality

Source attributed premature mortality from ambient PM2.5 exposure

Aerosol acidity remains high despite declining sulfate concentration

Aerosol burden expected to increase in a warmer world

Challenges in quantifying aerosol-induced changes in cloud properties

Recent Indo-Pacific SST trends suppress rainfall in mid-latitude East Asia

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Suggestions for Future Work

  • We need to march beyond odd-even initiative as major gains shall be obtained by initiatives like re-routing the traffic in mega and metro cities like Delhi and Gurgaon. Further, it will be important for the Government of Delhi to consider segregating the mixed traffic as at present. Initiatives like battery operated rickshaws in certain areas of Delhi and CNG in the others, bringing back electric trams to Delhi and motivating the automobile industry to produce cost-effective battery operated automobiles and hybrid vehicles which will go a long way to solve further the problem of air pollution.

  • The Government of Delhi may offer free charging of batteries from solar-powered charging stations to the battery-vehicle owners and even reduce the road tax by 50% for such vehicles. The Government of Delhi may also be well advised to offer say approximately 20% fuel subsidies to whoever opts for car-pooling. It may also be pertinent to note that while on one hand the odd-even initiative has created a hope for improving air quality, the regulators must come down heavily on Delhi metro and other major construction agencies who are contributing heavily to ever rising dust.

  • In-ordinate delay in completion of projects like construction of fly-overs, re-construction of East Kidwai Nagar etc. is also a matter of grave concern.

  • As the sample size is small and perturbed by varied meteorological conditions, we need to collect more data, covering from the surface through to earth observation, during fair weather conditions, to make more useful conclusion. We also need to understand the toxicity of pollutants and develop biomarkers that help setting-up of permissible respiratory levels for human health.



Fig. 6: Solar radiometric observations for AOD, TCO and PWC during 29 December 2015 – 20 January 2016. The data gaps in the plot are due to obscuration of Sun either due to clouds and/or fog. The dashed lines in the TCO and PWC frames indicate linear trend in the variations

Fig. 7: 5-Day Back Trajectories using NOAA HYSPLIT Model from 29-Dec-2015 to 20-Jan-2016. The asterik in each frame indicates location of the observation site (AUH, Panchgaon). The red, green and blue colored trajectories refer to 500, 1000 and 1500 m above ground level.

© 2013 Indian Aerosol Science and Technology Association