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Aug6-06, 03:54 PM
P: 1,409
Quote Quote by Andre
<snip> warming in the recent past between 1980 and 1998. That's when the warming stopped, however few did notice that.
Should we expect the warming to be linear?

World temperature was slightly warmer in 2005 than in 1998. Note the warm extreme anomalies as opposed to cool extreme anomalies. If you compare them with historical extremes these two years are somewhat unique in that there are almost no cold extremes. Also note the number of +5C anomalies in the subarctic northern land temperatures.

The mean trend has not changed significantly, but it is possible we have reached a plateau and will now experience a cooling as has been suggested by Bill Gray, professor emeritus, who predicts:
"In just three, five, maybe eight years, he says, the world will begin to cool again."
Global Temperatures
The 2005 global temperature was statistically indistinguishable from the standing record set in 1998. One data set, in use at NCDC since the late 1990s, produced a global annual temperature for 2005 that was slightly below 1998 (below left). An improved data set, which incorporates innovative algorithms that better account for factors such as changes in spatial coverage and evolving observing methods, results in 2005 being slightly warmer than 1998. (below right)