in 2020, -8.90 the ozone concentration globally is deteriorating and -12.80 in the arctic.15 to 30 kilometers above the earth's surface, in the stratosphere is where the most atmospheric ozone is concentrated. it is a gas made up of three oxygen atoms (o3). ozone molecules are constantly formed and demolished in the stratosphere. the stratosphere increases in warmth with elevation because ozone gasses in the upper layers absorb intense ultraviolet radiation from the sun.
