- (D) The more ozone in a given parcel of the stratosphere, the more heat it
retains. Ozone generates heat in the stratosphere, both by absorbing the
sun’s ultraviolet radiation and by absorbing upwelling infrared radiation
from the lower atmosphere (troposphere). Consequently, decreased ozone in
the stratosphere results in lower stratospheric temperatures and increased
UV radiation reaching the surface of Earth. Over recent decades, the mid to
upper stratosphere from 19–31 miles (30–50 km) above Earth’s surface has
cooled by 2°F to 11°F (1°C to 6°C). This stratospheric cooling has taken
place at the same time that greenhouse gas amounts in the lower atmosphere
(troposphere) have risen.
marvins-underground-k-12
(Marvins-Underground-K-12)
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