Saving ozone layer reduced climate change effects

The video discusses the Montreal Protocol, an international agreement signed in 1987 to halt the production and import of ozone-depleting chemicals like chlorofluorocarbons (CFCs). It highlights the protocol's success in allowing the ozone layer to recover and its significant role in slowing climate change by reducing temperature rise. The study estimates that the protocol has helped avoid a temperature increase of 0.5 to 1 degree Celsius in some areas and 3 to 4 degrees Celsius in the Arctic. By 2050, the planet is expected to be at least 1 degree Celsius cooler due to the protocol. Additionally, the Arctic summer sea ice extent is 25% higher, and Greenland's ice sheet is melting slower than it would have without the agreement.

What was the primary goal of the Montreal Protocol when it was signed in 1987?

• To promote renewable energy sources

• To increase global trade

• To stop the import and production of harmful chemicals like CFCs

• To reduce greenhouse gas emissions

How has the Montreal Protocol contributed to slowing climate change?

• By reducing the rate of CFC emissions

• By encouraging industrial growth

• By increasing the use of fossil fuels

• By promoting deforestation

What temperature rise has the Montreal Protocol helped avoid in the Arctic as of 2019?

• 4 to 5 degrees Celsius

• 3 to 4 degrees Celsius

• 2 to 3 degrees Celsius

• 1 to 2 degrees Celsius

By how much is the Arctic summer sea ice extent higher today due to the Montreal Protocol?

• 10%

• 20%

• 15%

• 25%

What is one of the future benefits of the Montreal Protocol by 2050?

• Increased global temperatures

• A planet at least 1 degree Celsius cooler

• Decreased biodiversity

• Higher sea levels