Data of polluted cities of India are analyzed for the period of nationwide lockdown amid Covid-19 situation.
Data of PM2.5 and NO2 level before and after lockdown period are graphically presented.
To examine the effect of improved air quality on human heath, we have used formulae from previous research work.
Risk factor with proportion to increase in PM2.5 is derived for before and after lockdown period and graphically presented
Recommendations are highlighted to improve the air quality and subsequently reduce the human health hazards.
Data are analyzed graphically with Microsoft excel workbook
Moving average trend line is used for the tuning of data pattern
Formula used to analyze the health risk is based on previous research work- Ambient Particulate Air Pollution and Daily Mortality in 652 Cities, New England Journal of Medicine
Following information from above research is used for analysis
On average, an increase of 10 μg per cubic meter in the moving average of PM2.5 concentration, there were 0.68% (95% CI, 0.59 to 0.77), increased in hearth related disease. [We have considered 0.5% impact on risk impact just to adjust for other gaseous pollutants.]
Recommendations are highlighted to improve the air quality and subsequently reduce the human health hazards.
Information regarding the pollutants , satellite images.
Above data are used for elaborating thee detail about the pollutants and correlating the data analysis with satellite images.
Data Sources : NASA and National Air quality Index
Pollutant descriptions and its impact on human health: NASA
Effect of lockdown amid COVID-19 pandemic on air quality of the megacity Delhi, India, Susanta Mahato, Swades Pal, Krishna Gopal Ghosh, Publicaiton: Science of the Total Environment 730 (2020) 139086
Ambient Particulate Air Pollution and Daily Mortality in 652 Cities, New England Journal of Medicine
Ambient (outdoor) air pollution, WHO publication dt. 30.09.2020
Review of evidence on health aspects of air pollution –REVIHAAP Project, Technical Report, WHO
Wikipedia