Articles | Volume 2, issue 3
Weather Clim. Dynam., 2, 675–694, 2021
https://doi.org/10.5194/wcd-2-675-2021
Weather Clim. Dynam., 2, 675–694, 2021
https://doi.org/10.5194/wcd-2-675-2021

Research article 03 Aug 2021

Research article | 03 Aug 2021

Linking air stagnation in Europe with the synoptic- to large-scale atmospheric circulation

Jacob W. Maddison et al.

Data sets

CAMS global reanalysis (EAC4) ECMWF - European Center for Medium-range Weather Forecasts https://ads.atmosphere.copernicus.eu/cdsapp#!/dataset/cams-global-reanalysis-eac4?tab=overview

ERA5 ECMWF - European Center for Medium-range Weather Forecasts https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5

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Short summary
Air stagnation occurs when an air mass becomes settled over a region and precipitation is suppressed. Pollutant levels can rise during stagnation. The synoptic- to large-scale influence on European air stagnation and pollution is explored here. We show that around 60 % of the monthly variability in air stagnation and pollutants can be explained by dynamical indices describing the atmospheric circulation. The weather systems most related to stagnation are different for regions across Europe.