The department congratulates Dr Ramit Debnath, Assistant Professor and Executive Director of Centre for Human-Inspired AI (CHIA) on publishing new environmental data science research paper in Nature Communications. This research makes a core contribution to how traditional heat impact models often rely heavily on absolute climatic conditions, like Wet Bulb Temperature thresholds do not capture the granular impacts of lethal heatwaves.The team analysed a massive dataset of 125,411 heat events across 140 cities and discovered a critical gap: mostlethal heatwaves occur below these high absolutethresholds.
The researchers discovered that accurate mortality prediction relies less on absolute heat, and more on a combination of thermo-temporal differentials (how fast the temperature spikes relative to what a local population is used to) and localvulnerability. Hence, they create a new taxonomy of lethal heat impacts: Shock heatwaves and Threshold heatwaves.By shifting the focus from "how hot is it?" to "how adapted is the population?", this new taxonomy provides a vital tool for policymakers to build smarter, more localized heat-health warning systems.
Full open access article link here:https://www.nature.com/articles/s41467-026-71396-x