Articles | Volume 20, issue 3
https://doi.org/10.5194/acp-20-1839-2020
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, Rostislav Kouznetsov, Risto Hänninen, and Viktoria F. Sofieva

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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