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Questions and Answers
What has human-induced global warming of 1.1 degrees C led to?
What has human-induced global warming of 1.1 degrees C led to?
- Localized changes with minimal global effect
- No significant impact on the climate
- Unprecedented changes in recent human history (correct)
- Predictable changes in the climate system
What is a consequence of rising global temperatures according to the report?
What is a consequence of rising global temperatures according to the report?
- Increased probability of reaching dangerous tipping points (correct)
- Reduction in sea levels
- Enhanced stability in the climate system
- Decrease in extreme weather events
What can trigger self-amplifying feedbacks in the climate system, as mentioned in the report?
What can trigger self-amplifying feedbacks in the climate system, as mentioned in the report?
- Increased carbon sequestration
- Decreasing global temperatures
- Thawing permafrost and massive forest dieback (correct)
- Reduced sea ice melting
What could happen if warming reaches between 2 degrees C and 3 degrees C?
What could happen if warming reaches between 2 degrees C and 3 degrees C?
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What is a potential effect of setting reinforcing feedbacks in motion, according to the report?
What is a potential effect of setting reinforcing feedbacks in motion, according to the report?
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Study Notes
Sixth Assessment Report (AR6)
- The Intergovernmental Panel on Climate Change (IPCC) released its final installment of the Sixth Assessment Report (AR6) on March 20.
Climate Change Findings
- Human-induced global warming has reached 1.1 degrees C, causing unprecedented changes to the Earth's climate in recent human history.
- The 1.1 degrees C global temperature rise has led to unparalleled climate changes in every region, including:
- Rising sea levels
- More extreme weather events
- Rapidly disappearing sea ice
Consequences of Global Warming
- The rising global temperature heightens the probability of reaching dangerous tipping points in the climate system.
- Crossing these tipping points can trigger self-amplifying feedbacks that further increase global warming, such as:
- Thawing permafrost
- Massive forest dieback
- Setting these reinforcing feedbacks in motion can lead to substantial, abrupt, and irreversible changes to the climate system.
Ice Sheet Melting and Sea Level Rise
- If global warming reaches between 2 degrees C and 3 degrees C, the West Antarctic and Greenland ice sheets could melt almost completely and irreversibly over many thousands of years.
- This would cause sea levels to rise by several meters.
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