Articles | Volume 20, issue 3
Atmos. Chem. Phys., 20, 1839–1847, 2020
https://doi.org/10.5194/acp-20-1839-2020
Atmos. Chem. Phys., 20, 1839–1847, 2020
https://doi.org/10.5194/acp-20-1839-2020

Technical note 17 Feb 2020

Technical note | 17 Feb 2020

Technical note: Intermittent reduction of the stratospheric ozone over northern Europe caused by a storm in the Atlantic Ocean

Mikhail Sofiev et al.

Data sets

SILAM Web site M. Sofiev, R. Kouznetsov, J. Vira, R. Hanninen, A. Uppstu, and T. Braznov http://silam.fmi.fi/aqforecast.html

Model code and software

SILAM open code at GitHub R. Kouznetsov and R. Delgado https://github.com/fmidev/silam-model

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Short summary
An episode of anomalously low ozone concentrations in the stratosphere over northern Europe occurred on 3–5 November 2018. The 30 % reduction of the ozone layer was predicted by the global chemistry-transport model of the Finnish Meteorological Institute driven by weather forecasts of ECMWF. The reduction was subsequently observed by ozone monitoring satellites. The episode was caused by a storm in the northern Atlantic, which uplifted air from the troposphere to stratosphere.
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