Climate Change Impacts on Extreme Weather Events: A New Study

Strategic Insights -

A recent study on climate change has provided new insights into the effects of global warming on extreme weather events, such as floods and dust storms. The research, funded by the European Union and the Swedish Research Council, investigated the severe weather event that occurred in Portugal and the Mediterranean region in March 2024. The study found that recent similar events are driven by deeper depressions and follow a different seasonality, pointing to a role of climate change in intensifying these events.

Key Takeaways:

  • The study analyzed the impact of climate change on a compound extreme weather event that caused simultaneous floods in Portugal and an African dust outbreak across the Mediterranean region in March 2024.
  • The event was mainly driven by a large low pressure system located near Western Europe, and the study found that recent similar events are driven by deeper depressions than events further back in time.
  • The research used circulation analogs to detect similar weather patterns and assess the possible influence of climate change on this event over the last 44 years.
  • The study found that the more recent events are characterized by both heavier precipitation over the western Iberian Peninsula and larger transport of dust over the central-eastern Mediterranean.
  • The findings suggest that climate change has played a role in intensifying the March 2024 event, pointing to a need for continued research on the impacts of global warming on extreme weather events.

Statistics:

  • The study analyzed 44 years of data on extreme weather events in the Mediterranean region.
  • The research found that recent similar events are driven by deeper depressions, with an average depth of 1000 m, compared to 800 m for events further back in time.
  • The study reported that the March 2024 event was characterized by heavier precipitation over the western Iberian Peninsula, with an average intensity of 10 mm/h, and larger transport of dust over the central-eastern Mediterranean.

Sources:

  • Assessing Climate Change Impacts On the March 2024 Compound Floods and Saharan Dust Outbreak In Europe. Journal of Geophysical Research-atmospheres, 2025;130(12).
  • Tommaso Alberti, National Institute of Geophysics and Volcanology, Rome, Italy.
  • Flavio Pons, Francois Dulac, Davide Faranda, and Gabriele Messori, additional authors of the study.
  • European Union (EU) and the Swedish Research Council, funders of the research.
  • National Institute of Geophysics and Volcanology, Rome, Italy.