Summary:
- The study found that megadroughts, defined as severe droughts lasting 2 decades or more, have become more common and widespread in recent decades compared to the past 1,200 years.
- Researchers analyzed tree ring data and climate models to reconstruct past megadrought patterns, and found that the size and duration of megadroughts have increased significantly since the late 1800s.
- The study suggests that climate change is a major driver of this trend, with rising temperatures and altered precipitation patterns contributing to the expansion and intensification of megadroughts across the western United States and other regions.