I suggested in a recent Friends of Wisdom thread, that I didn’t really “care” whether global warming was caused by human activity, nor even whether it was “real”. The answer to neither question changes my belief that we should be concerned enough to work out what to do in response to the facts.
That is, we can learn from history, but not in simple “we did that and caused this, therefore if we do this we can achieve that” kinda ways. Life’s just complicated enough.
Anyway, at first glance, this graph (linked also via Jorn) looks like a pretty random distribution of historical temperature fluctuations …. until you notice the right end of the graph has years as it’s time axis, and the left has hundreds of thousands of years. No idea how good the source data or its representation are, or even whether the western equatorial pacific temperature is a representative data point, but the graph is indeed scary. It’s 400,000 years since we had a period with average temperatures like the last 5 years, and for the last 100 years we’ve been 2 or 3 standard deviations higher than the long time average for the last 1,350,000 years, a period covering several ice-ages and retreats !!!
Plenty of caveats about the distortion of a graph with such a skewed distribution of data points and axes, but it still certainly seems significant.