19.1.6. Arctic Ozone Depletion

♤ The Ozone Depletion has been increasingly evident over the Arctic as well.

♤ The Arctic Ozone Depletion which swept across Britain in March 96 was the greatest depletion of ozone ever seen in the northern hemisphere.

♤ Scientists claim that it had been caused, in past, by a dramatic cooling of the upper atmosphere in the northern latitudes over.

♤ The ozone depletion over the northern hemisphere has been increasing steadily since the winter of 1992.

♤ Apart from the build-up of ozone depleting chemicals, the main cause is the increasing cold temperature in the arctic stratosphere which encourages the formulation of PSCs.