Scientists run simulations on Cheyenne to unravel air-quality paradox
May 7, 2021
In a new study investigating changes in emissions and their interaction with secondary pollutants, researchers were presented with a perplexing riddle: While lockdowns last year in response to COVID-19 resulted in drastic cuts to emissions, especially from vehicle tailpipes, some urban areas saw a paradoxical spike in ozone air pollution.
“The COVID-19 pandemic provided us with an unanticipated global air-quality experiment,” said NCAR scientist Benjamin Gaubert, who led the study.
To determine what caused the changes in air quality, the research team used Cheyenne to run simulations of the atmosphere with the latest version of the NCAR-based Community Earth System Model (CESM2.2).