Not exact matches
Going back even further, the red chart plot depicts an 83 - month
period of exceptional warming right after the Hansen testimony
of 1988.
From the start, the «Modern» 5 - yr average rises much faster; but in an
exceptional (dare we say «unprecedented») spurt, the «Earlier»
period 5 - yr average closes the gap to a mere +0.03 degree
warming difference at the end
of 25 years.
If the term
warmer is with reference to the current
period then the situation is a little different if we also assume that the current
period is a time
of exceptional forcing.