Floods Emerge as Primary Threat to Desert Regions, Research Unveils

Researchers from the University of Southern California and the University of Paris in France collaborated on a new study that reveals how desertification is exacerbating soil erosion in coastal areas, amplifying flood risks in port cities across the Middle East and North Africa. Focusing on the devastating flood in Derna, Libya in 2023, which claimed over 11,300 lives, the study demonstrates how intensified soil erosion can trigger catastrophic floods in desert regions. The findings of this research were published in Nature Communications.

The researchers emphasize that with the increasing frequency of extreme weather events due to climate change, the vulnerability of arid regions is becoming more pronounced, highlighting the urgent need for advanced Earth observation projects to monitor and analyze changes in these areas.

Over the past decade, the Sahara Desert in North Africa, an area larger than the contiguous United States, has been facing increasingly complex environmental threats: escalating droughts intersecting with intense coastal rainfall. This phenomenon is rooted in global warming leading to rising temperatures in the eastern Mediterranean Sea, resulting in increased rainfall frequency. Coupled with expanding desertification, the extreme climate exacerbates soil erosion, giving rise to uncontrollable and deadly mudslides. The aging dam systems in the region struggle to cope with these disasters.