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Abstract
This study uses an Earth System Model to analyze the Arctic's temperature response to radiative geoengineering under RCP8.5, aiming to reduce radiative forcing to RCP4.5 levels. While the three geoengineering methods (SAI, MCB, CCT) mitigate global mean temperature rise, Arctic temperatures remain higher than under RCP4.5. Maximum temperature increases under CCT and MCB are linked to CO2 plant physiological forcing, favoring wildfires. SAI leads to a 7.8% decrease in permanently frozen Arctic land compared to RCP4.5. The study concludes that these geoengineering designs are less efficient at cooling the Arctic than the global mean and worsen extreme conditions compared to RCP4.5.
Publisher
communications earth & environment
Published On
Apr 05, 2024
Authors
Rhonda C. Müller, Jin-Soo Kim, Hanna Lee, Helene Muri, Jerry Tjiputra, Jin-Ho Yoon, Gabriela Schaepman-Strub
Tags
Arctic temperatures
geoengineering
radiative forcing
climate change
global warming
SAI
CCT

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