Found in this great toot
this post was submitted on 25 Oct 2023
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Wheres the scale for temperture change, yeah the colors indicate a trend from cold to warm but how warm isnt shown
this wasn't my exact complaint, but it's similar; the graph starts at 320 and goes up to 420, meaning the slope is intentionally exaggerated. if you want to show us how much worse things have become, give us comparison to earlier CO2 levels, otherwise this just gets dismissed as alarmist propaganda.
The slope isn't exaggerated at all, the increments are same as if you showed the full graph from zero. But zero isn't a useful baseline, and zooming out to fit it into your screen would give a false impression of a flat change at the top of a narrow section of history. What would fix that is a longer x-axis showing further back in time. Then you'd see a relatively flat line with some rises and dips, then at the end a sudden spike.