Astronomy Picture of Day: Ozone Hole# Astronomy - 天文
s*t
1 楼
A Small Double Ozone Hole in 2002
Credit: SVS, TOMS, NASA
Explanation: As expected, the ozone hole near Earth's South Pole is back again this year. This
time, however, it's smaller than the past two years, and has an unusual double lobe structure.
Ozone is important because it shields us from damaging ultraviolet sunlight. Ozone is
vulnerable, though, to CFCs and halons being released into the atmosphere. International
efforts to reduce the use of these damaging chemicals
Credit: SVS, TOMS, NASA
Explanation: As expected, the ozone hole near Earth's South Pole is back again this year. This
time, however, it's smaller than the past two years, and has an unusual double lobe structure.
Ozone is important because it shields us from damaging ultraviolet sunlight. Ozone is
vulnerable, though, to CFCs and halons being released into the atmosphere. International
efforts to reduce the use of these damaging chemicals