Research indicates that climate change and extreme weather events have a strong correlation. In 2004, a group of researchers published one of the first studies linking human-induced climate change to the severe heatwave of summer 2003 in Europe. This heatwave resulted in the deaths of over 70,000 people in Europe, and researchers confirmed that human intervention has at least doubled the risk of such a heatwave.
Increase in Extreme Weather Events
The Carbon Brief organization, which focuses on climate science and policy, has reviewed all published studies on the impact of climate change on extreme weather events. This review includes over 900 studies and nearly 1,000 extreme weather events and trends. The results show that 77 percent of these events have intensified due to climate change. Additionally, about 8 percent of these events have become less likely or lower risk due to climate change.
Read more: The United Nations warns that the world must prepare for life beyond 1.5 degrees Celsius
The Role of Climate Change in Natural Disasters
In 2025, new NASA data showed that the intensity of weather events such as droughts and floods has significantly increased over the past five years. This study indicates that extreme weather events are occurring more frequently and with greater intensity. In 2024, statistics show that these events have doubled compared to the average from 2003 to 2020. Researchers from NASA's Hydrological Sciences Laboratory, led by Bill Lee, emphasized that they cannot definitively confirm a causal link, but evidence suggests that global warming is a major factor in these events.
Meanwhile, researchers confirmed a strong link between global warming and the occurrence of floods by examining the latest natural disasters in Nepal and Tibet in August. These disasters followed a landslide in the Langtang Lirung area, resulting in the deaths of over 1,300 people and the disappearance of thousands more. The reconstruction and aid costs for Nepal are estimated to be around $5 billion.
Overall, recent evidence indicates that human-induced global warming significantly impacts the intensity of weather events, and researchers believe this issue must be seriously examined and addressed.
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