Global Model Simulations of the Effects of COVID-19 on the Level of Primary and Secondary Air Pollutants
Abstract
With the reduction in the economic activity associated with the COVID-19 pandemics, the emissions of a number of air pollutants have been substantially reduced in different parts of the world. We use a global chemistry-climate model (Community Earth System Model, CESM2) to assess the consequences of the pandemics on air pollution at the global scale and in particular, the changes in the concentration of secondary pollutants such as ozone and atmospheric aerosols. We also assess the perturbation in the oxidizing capacity of the atmosphere.
The model is nudged to analyzed meteorology and by information on the reduction of traffic, industrial activity, energy production, etc. during the pandemics. Evaluations of the simulated fields of chemical species in 2019 (a year before the pandemics) and 2020 (during the pandemics) involves the analysis of space observations and of surface data from monitoring stations.- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2020
- Bibcode:
- 2020AGUFMA025...09T
- Keywords:
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- 0345 Pollution: urban and regional;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0365 Troposphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0368 Troposphere: constituent transport and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 3355 Regional modeling;
- ATMOSPHERIC PROCESSES