Limits to blaming climate change for extreme weather events: Scientists highlight data gaps
Attributing localised, short-duration extreme weather events to climate change is challenging due to limited weather records, insufficient computing power, and the complexity of natural variability. While groups like World Weather Attribution assess the human fingerprint on extreme weather, scientists like J. Srinivasan and Vimal Mishra point out that current climate models struggle to capture fast-changing processes and that events can occur without anthropogenic influence. The debate also touches on whether single-event attribution is scientifically possible and the potential for assigning legal liability, with many experts emphasizing preparedness over solely blaming climate change.
Key Points
- Attributing short-duration, sub-daily extreme weather events to climate change is more difficult than attributing longer-duration events like heatwaves.
- Limitations in long-term weather records, computing power, and climate model resolution hinder accurate attribution of localised events.
- Scientists debate the scientific validity of single-event attribution and the challenge of separating natural variability from human influence.
- The IPCC's Sixth Assessment Report noted that current models cannot realistically represent local phenomena at required resolutions.
- Some researchers argue that improving early warning systems and adaptation infrastructure is more beneficial than focusing solely on assigning climate responsibility.
Exam Facts
- World Weather Attribution (WWA) assesses the impact of climate change on extreme weather.
- J. Srinivasan, professor emeritus at the Indian Institute of Science, Bengaluru.
- Vimal Mishra, Bikram Sarabhai Chair Professor at IIT-Gandhinagar.
- IPCC Sixth Assessment Report highlights model limitations for local phenomena.
- Raghu Murtugudde, professor emeritus at the University of Maryland.
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