Variability of atmospheric circulation over Central Europe in the light of manual classifications
- 1Jagiellonian University, Institute of Geography and Spatial Management, Department of Climatology, Krakow, Poland (agnieszka.wypych@uj.edu.pl)
- 2Global Change Research Institute CAS (CzechGlobe), Brno, Czech Republic
- 3Eszterházy Károly Catholic University, Eger, Hungary
Various classifications of circulation types have long been used to assess changes and variability of atmospheric circulation. As a result, several dozen different manual classifications were created, which were based on various methodological assumptions. Although they are now increasingly replaced by automatic classifications (often having the characteristics of objective classifications), the mentioned classifications are still used for many analyses. And sometimes, due to the subjectivity of the assessment of synoptic situations, they better explain specific weather conditions, including extreme ones. This also applies to Central Europe, where due to its location, weather and climate, it is characterized by great variability and transience. This was also one of the reasons why several classifications were created for this region.
The work attempts to assess the variability of atmospheric circulation over Central Europe for a long period of 120 years (1901-2020) based on available manual classifications of circulation types.
Five traditional classifications of Osuchowska-Klein, Niedźwiedź, CHMU, Pecely and the well-known Grosswetterlagen classification were considered here. Simultaneously the automatic classifications developed by Lityński, Ustrnul and Řehoř were also taken into account independently. A comparison of the occurrence of circulation types or groups of circulation types between the analyzed classifications was made.
The results sometimes showed large discrepancies between individual types of circulation defined in the analyzed classifications. The analysis showed that their causes should be sought in the diversity of mesoscale circulation conditions in Central Europe, but also in a different methodological approach taken into account in individual classifications. Taking into account other synoptic materials used in the development of individual classifications may also have some impact on the results obtained.
How to cite: Wypych, A., Ustrnul, Z., Řehoř, J., and Mika, J.: Variability of atmospheric circulation over Central Europe in the light of manual classifications, EMS Annual Meeting 2024, Barcelona, Spain, 1–6 Sep 2024, EMS2024-933, https://doi.org/10.5194/ems2024-933, 2024.
