For 10 points, name this layer of the atmosphere that includes the ozone layer.
Quasi-biennial oscillation and Brewer-Dobson circulation occur in the tropical regions of this part of the Earth. Sulfur aerosols can accumulate in this area after volcanic eruptions, leading to cooler climates. The lower part of this layer contains triatomic molecules that absorb ultraviolet light. Its lower boundary is the tropopause and the mesosphere lies above it. For 10 points, name this layer of the atmosphere that includes the ozone layer.
Quasi-biennial oscillation and Brewer-Dobson circulation occur in the tropical regions of this part of the Earth.
{stratosphere}