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What are the key findings?
The paper highlights three key findings: (1) global surface temperatures have risen about 1.1°C since pre-industrial times, (2) Arctic sea ice is declining at roughly 13% per decade, and (3) current mitigation pledges still fall short of the 1.5°C target by around 16 GtCO2e.
What methodology did the authors use?
They combined a meta-analysis of 42 peer-reviewed studies with satellite observations from 1979-2023, then ran ensemble climate simulations to project outcomes under four different emissions scenarios.
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