New Report Helps Scientists Link Extreme Weather to Climate Change

Topic: Climate

A new report by US scientists has improved methods for linking extreme weather events like heat waves and hurricanes to climate change. This will help in lawsuits against oil companies.

A recent science report published by the National Academies of Sciences, Engineering, and Medicine (NASEM) has made significant progress in understanding how human-caused climate change affects extreme weather events.

The report, titled "Attribution of Extreme Weather and Climate Events and their Impacts," updates a 2016 assessment. It focuses on methods and modeling that allow for more robust assessments of extreme events. James Hurrell, a professor at Colorado State University, said, "Significant progress has been made over the last decade."

The report highlights that scientists can now confidently link heat waves and heavy rainfall to climate change. However, they still struggle to attribute thunderstorms and tornadoes to human-caused climate change.

EEA (Extreme Event Attribution) studies compare an event's characteristics in the current climate to a "counterfactual" world without human-caused emissions. The authors found that EEA capabilities have improved over the past decade due to advances in understanding physical drivers, observational data, and statistical techniques.

However, challenges remain for certain types of events, such as severe thunderstorms. Global models lack resolution to capture climate change's impact on these events. Confidence estimates are also lower for underdeveloped parts of the world.

The report calls for a common framework for attribution studies to avoid confusion among the public and stakeholders.

Why It Matters

This report will help in lawsuits against oil companies, which is crucial for India as it aims to reduce its dependence on fossil fuels. Climate change affects extreme weather events, which can have devastating impacts on communities worldwide.

Key Facts

• The National Academies of Sciences, Engineering, and Medicine (NASEM) published a report titled "Attribution of Extreme Weather and Climate Events and their Impacts."
• The report updates a 2016 assessment and focuses on methods and modeling for extreme event attribution.
• EEA studies compare an event's characteristics in the current climate to a "counterfactual" world without human-caused emissions.
• Challenges remain for certain types of events, such as severe thunderstorms, due to limitations in global models.
• The report calls for a common framework for attribution studies.

Key Terms

Attribution science

The study of linking specific extreme weather events to human-caused climate change.

EEA (Extreme Event Attribution)

Studies that compare an event's characteristics in the current climate to a "counterfactual" world without human-caused emissions.

Implications

This report will help in lawsuits against oil companies, which is crucial for India as it aims to reduce its dependence on fossil fuels. Climate change affects extreme weather events, which can have devastating impacts on communities worldwide.