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Limiting the global temperature increase to 34.7 F
Maintaining the global temperature increase below 1.5°C versus higher level is vital to protecting against climate change. Adaptation will be less difficult. Our world will suffer less negative impacts on intensity and frequency of extreme events, on resources, ecosystems, biodiversity, food security, cities, tourism, and carbon removal.
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The global climate has changed relative to the pre-industrial period, and there are multiple lines of evidence that these changes have had impacts on organisms and ecosystems, as well as on human systems and well-being. The increase in global mean surface temperature (GMST), which reached 0.87°C in 2006–2015 relative to 1850–1900, has increased the frequency and magnitude of impacts, strengthening evidence of how an increase in GMST of 1.5°C or more could impact natural and human systems.
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