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3. The transfer of heat to the deep oceans occurs more
slowly than within the atmosphere or the upper layers of the ocean.
The resulting transient period, or "lag," means that the global
average surface temperature at any time is lower than the
temperature that would prevail after all the redistribution had
been completed. At the time of equivalent CO2 doubling, for example, the global
average surface temperature may be as little as one-half the
ultimate equilibrium temperature associated with those
concentrations.
4. A rise of sea level may accompany global warming,
possibly in the range of 0 to 60 cm (0 to 24 inches) for the
temperature range listed above.
5. Several troublesome, possibly dramatic, repercussions
of continued increases in global temperature have been suggested.
No credible claim can be made that any of these events is imminent,
but none of them are precluded.
