Abstract
An unprecedented heatwave hit central Europe in June 2019 and set record-breaking high temperatures over approximately one-third areas of Europe. The relative role of dynamics and thermodynamics in anchoring this extreme heatwave is investigated via the flow analogue method. It reveals that dynamical processes contributed to 64.7% of the observed temperature anomalies of the event, and thermodynamical processes contributed to the remaining 35.3%. Nevertheless, thermodynamical changes were favorable towards the occurrence of similar events over central Europe in recent decades, whereas dynamical changes acted oppositely. In addition, their relative contributions strongly fluctuated with time, imposing challenges to project how heatwaves will behave on a regional scale.
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