SACRE-X
Shifts in large-scale circulation patterns can strongly alter the frequency and/or intensity of extremes and can thus have severe humanitarian impacts. Climate change over the last century has already altered some large-scale circulation patterns but the uncertainties are large.
Started in 2014, in this project we analyzed how large-scale circulation changed and how this affected extreme weather: From heat waves, to cold spells to drought.
Research Questions
SACRE-X aims to provide fundamental insights into atmospheric circulation, its modes of variability, and the link to weather extremes. Key research questions are:
– How does rapid warming in the Arctic alter circulation patterns in the mid-latitudes?
– Why did so-called wave-resonance events, associated with extreme weather, occur more often recently?
– How does the Hadley circulation change under global warming and what are the key drivers?
– How do changes in Rossby waves and jets affect surface weather and why?
Topological visualization of jetstreams around the globe with a Jetstream detection algorithm applied to polar and subtropical jets in the northern hemisphere (white lines)
Key Findings
- one
- two
- three
Contributors:
- Dim Coumou – project (BMBF Grant for Junior Research Group)
- Sonja Totz
- Kai Kornhuber
- Marlene Kretschmer
- Jascha Lehmann
