More recent measurements:
https://www.theguardian.com/environment/2020/jul/10/uk-air-pollution-still-down-despite-return-normal-traffic-study
I'm afraid I still don't think any reductions are going to last. Quite the opposite, I think that in the short term pollution will actually increase, before settling down to levels seen before the crisis again.
@Oliver Schick started
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More recent measurements:
https://www.theguardian.com/environment/2020/jul/10/uk-air-pollution-still-down-despite-return-normal-traffic-study
I'm afraid I still don't think any reductions are going to last. Quite the opposite, I think that in the short term pollution will actually increase, before settling down to levels seen before the crisis again.