Quote:
Originally Posted by Slickcraft
lg: It looks like the variance has been fairly constant over time.
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It's true that if one only focuses on the single data point for each year then it looks like "the variance has been fairly constant over time". But lg's smoothing curve averages recent data so that a naked eye is not fooled by year to year noise.
The chart actually shows 40 years of warming from the the 1970s to today.