By Nandita Ganguly
Department of Physics, St. Xavier’s College, Ahmedabad. firstname.lastname@example.org
The stratosphere, a region above the weather producing layer—troposphere contains around 90 per cent of the earth's ozone. Depletion of this stratospheric ozone leads to deleterious environmental effects, thus necessitating continuous monitoring. The ozone column above the Indian subcontinent has been examined since 1970 and measurements show that although the total ozone content has not changed significantly—there has been a small reduction in stratospheric ozone and a substantial increase in tropospheric (surface) ozone. The transit time of ozone depleting chemicals...