Geology Reference
In-Depth Information
Polar Ozone Depletion
30
Arctic Ozone
Sodankyla,
Finland (67
°
N)
Antarctic Ozone
South Pole (90
°
S)
25
15
20
10
15
10
5
5
0
0
0
5
10
15 0
5
10
15
Ozone abundance (mPa)
Figure 28 Antarctic and Artic ozone distributions in the SH and NH spring periods.
58
The figure shows the substantial decrease in ozone in the 14-20 km range after
polar sunrise. For the Antarctic the data show there was little depletion before
the 1980s. For the Arctic, there is substantial interannual variability owing to
the temperature of the stratosphere
Earth Probe TOMS Total Ozone, September 16, 2000
<120 200
280
360
440
520>
Ozone (Dobson Units)
Figure 29 The 2000 ozone hole over the Antarctic seen by the satellite EP-TOMS (Image
courtesy of NASA)
