Reset time, now what

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It occurred to me this morning that this lull in human activity has the potential to provide us with more robust evidence of our impacts on the environment, and specifically global climate change, in the same way that 9-11 did. When most aircraft were grounded after the 9-11 attacks, global dimming decreased measurably. This provided correlation/causation for the impacts of aircraft contrails.
Unlike the immediate effect seen then, the COVID 19 event may not last long enough to help strengthen the link between human activities and anthropogenic climate change. It may appear as "weather" rather than "climate".