HEAT WAVE ASSOCIATED WITH SURFACE OZONE POLLUTION IN DELHI

Abstract

Heat waves are expected to grow more extreme across most worldwide land regions as greenhouse gas levels continue to rise and average temperatures rise in both trials (greater maximum temperatures during heat waves). It was hypothesized that heat waves are associated with surface ozone levels. To test this hypothesis correlation and regression analysis were used across Delhi using the air quality data from 4 monitoring stations run by CPCB. The ozone concentrations have been studied for monthly and seasonal patterns. Dependence of surface ozone concentration on PM2.5, PM10, NO, NOx, CO, SO2, Relative Humidity, Ambient Temperature, and Wind Speed has been studied. The role of ozone precursors and reduction in PM2.5 and NOx have been illustrated. Significant association was found among temperature and ozone further it was observed that Ozone concentrations fluctuate throughout the day, for different study period. Additionally, the role of NOx, VOCs and solar radiations in ozone formation have been discussed.