Related topics: nitrogen

COVID-19 lockdowns linked to pollution spikes in some cities

Lockdowns last year in response to COVID-19 resulted in drastic cuts to emissions, especially from vehicle tailpipes, and yet some urban areas saw a paradoxical spike in ozone air pollution. A new study led by the National ...

Air pollution returning to pre-COVID levels

In early 2020, data from satellites were used to show a decline in air pollution coinciding with nationwide lockdowns put in place to stop the spread of COVID-19. One year later, as lockdown restrictions loosen in some countries ...

Air pollution fell sharply during lockdown

The far-reaching mobility restrictions at the beginning of the COVID pandemic in March 2020 created a unique situation for atmospheric sciences: "During the 2020 lockdown, we were able to directly investigate the actual effects ...

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