Earth System Dynamics
Earth System Dynamics
ESD
Articles | Volume 15, issue 3
Articles | Volume 15, issue 3
https://doi.org/10.5194/esd-15-589-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esd-15-589-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 3
Research article
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03 May 2024
Research article | Highlight paper |  | 03 May 2024

Applying global warming levels of emergence to highlight the increasing population exposure to temperature and precipitation extremes

David Gampe, Clemens Schwingshackl, Andrea Böhnisch, Magdalena Mittermeier, Marit Sandstad, and Raul R. Wood

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This study finds that >85% of the global population is exposed to warming nighttime temperatures robustly beyond natural variability, at a Global Warming Level of 1.5°C. This increases to >95% at 2.0°C. Daily maximum temperature follows a comparable trend. Thus, every small additional warming substantially increases human exposure to potentially detrimental climate conditions.
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Using a special suite of climate simulations, we determine if and when climate change is detectable and translate this to the global warming prevalent in the corresponding year. Our results show that, at 1.5°C warming, >85 % of the global population (>95 % at 2.0° warming) is already exposed to nighttime temperatures altered by climate change beyond natural variability. Furthermore, even incremental changes in global warming levels result in increased human exposure to emerged climate signals.
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