KlimaCampus Kolloquium: An unintended worldwide experiment: Impact of COVID-19 on the global chemical composition of the atmosphere

The reduction in the emissions of greenhouse gases and air pollutants during COVID-19 offers a glimpse into a potential future in which air quality would be improved. With a global Earth system model, we assess the response of primary and secondary chemical species of the atmosphere to this global atmospheric experiment. We highlight the nonlinear behavior of the chemical system, which makes air pollution mitigation policies difficult to implement. Meteorological variability produces anomalies, sometimes larger than the perturbations attributed to changes in the emissions. This worldwide experiment provides information that should help improve air quality on the different continents.

Please register at: www.klimacampus-hamburg.de/klimacampus-colloquium




15:15 h


Virtual Seminar


Guy Brasseur, MPI for Meteorology


Bjorn Stevens

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