I grew up in LA and while I don't live there anymore I've seen pictures from the last few days. Never in my life have I seen such blue skies over LA. And my parents don't ever remember it being clearer either. At least this shows what some stricter climate controls can do to both the climate and the economy and the tradeoffs involved.
Keep in mind stricter climate controls wouldn’t even hurt the economy this bad. A harsh carbon tax on all fossil fuels in exchange for COVID-19 to disappear to be gone would be a welcome relief to the economy.
I also hope that there will be some dip in relevant global climate measurements, so there will be something to point to and say: "here's direct empirical evidence that climate change is man-made and that reducing emissions helps mitigate it".