205
Atmospheric Chemistry
Year
72
76
80
84
88
92
CO
2 Mixing Ratio (ppm)
320
330
340
350
360
370
Barrow
Mauna Loa
Samoa
South Pole
Figure 5.25
The difference in the annual cycling of carbon dioxide in the atmosphere at various locations.
800
700
600
500
400
Age (ky BP)
CO
2 (ppmv)
300
200
100
0
180
200
220
240
260
280
300
Figure 5.26
The variations of carbon dioxide and temperature as recorded in the Vostok ice core during the last climate
cycle.