204
Chemical Oceanography, 4th Edition
Year
1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005
pCO
2 (ppm)
310
315
320
325
330
335
340
345
350
355
360
365
370
375
380
Figure 5.23
The increase of carbon dioxide at Hawaii showing the annual cycling over the last 42 years. (Data from Keeling,
C.D., and Whorf, T.P., in Trends: A Compendium of Data on Global Change, Carbon Dioxide Information Analysis
Center, Oak Ridge, TN, 2004.)
Month
Fluctuation of pCO
2 (ppm)
–4
–2
0
2
4
J J A
J F M
M
A
S O N D J F M A M J
Figure 5.24
The mean annual cycling of carbon dioxide in the atmosphere.