Ozone depletion
STRATOSPHERIC PHENOMENA OF EARTH
Ozone hole; Ozone Depletion; Ozone depletion theory; Ozone Hole; Ozone depleter; Discovery of ozone depletion; Ozone depleting substance; Ozone-depleting substance; Depletion of the ozone layer; Depletion of ozone; Rowland-Molina reaction; Ozone layer depletion; Ozone depleting; Ozone depleting chemical; The depletion of the ozone layer; Ozone depletors; Ozone Depleting Substance; Reduction of stratospheric ozone; Ozone depletion research; Ozone damage; Ozone-depleting chemical; Antarctic ozone hole; Ozone Layer Depletion; Hole in the ozone layer; Hole in the ozone; Common misconceptions about ozone depletion; Ozone destruction; Ozone Depleting Substances
Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere, and a much larger springtime decrease in stratospheric ozone (the ozone layer) around Earth's polar regions. The latter phenomenon is referred to as the ozone hole.