Flash floods resulting from extreme rainfall pose a major risk to people and infrastructure, especially in urban areas. Higher temperatures due to global climate change affect continuous rainfall and short rain showers in somewhat equal measure. However, if both types of precipitation occur at the same time, as is typical for thunderstorm cloud clusters, the amount of precipitation increases more strongly with increasing temperature, as shown in a study by two scientists from the University of Potsdam and the Leibniz Centre for Tropical Marine Research (ZMT) in Bremen. The study has just been published in the journal “Nature Geoscience”.

The Atlantic Multidecadal Oscillation (AMO) — a low-frequency variability in sea surface temperature that repeats roughly every 40 to 80 years in Atlantic — impacts global climate and influences frequency and severity of extreme weather events. High-resolution models can improve simulations of AMO, but researchers did not understand how. Now, an international team has figured out why more detailed models can simulate the AMO in a way that better matches with observed data.

 A new study categorizes corporate climate risks into physical, transition and perceived categories. Researchers propose an integrated assessment framework combining exposure data, management capabilities and market perceptions. The work highlights supply chain vulnerabilities in physical risks, ESG limitations in transition risks, and AI applications for perceived risks. Findings help firms navigate climate challenges while identifying green energy opportunities.