What is it about?

Under global warming, the occurrence of compound dry and hot events (CDHEs) is expected to increase, which may cause more severe damage to human society. Based on the Coupled Model Intercomparison Project Phase 6, the changes in population exposure to CDHEs and the driving forces are estimated and discussed in this study. The results show that the occurrence of CDHEs and population exposure are expected to increase substantially, especially under high-emission scenarios. Sahara is expected to have the largest increase in population exposure to CDHEs, followed by the Mediterranean, Northeast America, Central America, Africa, and Central Asia. The influence of climate change on the increase in exposure is much larger than that of the population change.

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Why is it important?

It is important and urgent to make mitigation strategies to alleviate the impacts of CDHEs on human society.

Perspectives

The results of our study are robust and are useful for future risk management of drought and heatwaves.

Gengxi Zhang
Yangzhou University

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This page is a summary of: Climate Change Determines Future Population Exposure to Summertime Compound Dry and Hot Events, Earth s Future, October 2022, American Geophysical Union (AGU), DOI: 10.1029/2022ef003015.
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