Africa shows rising droughts, heatwaves, and compound extremes

What the study found: Droughts, heatwaves, and compound drought–heatwave events have all increased across Africa from 1979 to 2024. The study found that heatwave seasons have become longer, droughts have become more frequent and persistent, and compound drought–heatwave activity has accelerated since the 2000s.
Why the authors say this matters: The authors say these patterns point to growing exposure to compound climate extremes in Africa. They conclude that this creates an urgent need for targeted adaptation strategies, especially in the regions most affected.
What the researchers tested: The researchers used long-term data from 1979 to 2024 on maximum land surface temperature and the standardized precipitation evapotranspiration index, an index that combines precipitation and evaporative demand to track drought conditions. They developed heatwave and drought indicators and used them to assess patterns at continental, climatic, regional, and national scales across Africa.
What worked and what didn't: The results show pronounced upward trends in both heatwaves and droughts. Heatwave seasons had delayed termination and extended exposure beyond global averages; drought mainly drove the occurrence and intensity of compound drought–heatwave events, while heatwaves governed event duration in arid and semi-arid zones.
What to keep in mind: The abstract does not describe detailed study limitations. It also does not provide the full methods, uncertainty estimates, or exact values for the trends and regional comparisons.

Key points

• Heatwaves and droughts both showed upward trends across Africa from 1979 to 2024.
• Heatwave seasons became longer, with delayed termination.
• Compound drought–heatwave events accelerated since the 2000s.
• Eastern and Southern Africa were identified as the most affected regions.
• Drought mainly drove compound-event occurrence and intensity, while heatwaves governed duration in arid and semi-arid zones.