Karolinska Institutet researchers Ziad El-Khatib and Johan von Schreeb, along with fellow researchers Sanni Yaya (University of Ottawa), Maral Amirkhani and Shidrokh Ghaemimood (The Baháʼí Institute for Higher Education (BIHE)) are the authors behind a paper on the relation between extreme weather events and death based on temperature and CO₂-emissions globally that was recently published in Preventive Medicine Reports. The paper covers the time period 1999 to 2018 and looked at number of deaths due to three types of extreme weather-related events (heat wave, cold wave, severe winter conditions) within low-, medium-, and high-income countries.

The results of the study show that the majority of cold wave related deaths occurred in middle-income countries followed by high-income countries. The study further found that more deaths were likely to occur during heat waves than cold waves or severe winter weather, in particularly in high-income countries. And finally, increased CO₂ emissions can result in an increase in the number of deaths during severe weather events.

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