Environmental Studies and Forestry

Delaying methane mitigation increases the risk of breaching the 2 °C warming limit

C. Nzotungicimpaye, A. J. Maclsaac, et al.

Urgent methane mitigation is crucial for achieving the 2°C goal, as highlighted by researchers Claude-Michel Nzotungicimpaye, Alexander J. Maclsaac, and Kirsten Zickfeld. This study shows that immediate action on methane, combined with stringent CO₂ controls, can significantly limit global warming, while delays in intervention could dramatically increase peak temperatures. Discover the vital implications of timely methane action for our planet's future.

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Abstract

Atmospheric methane levels are growing rapidly, raising concerns about limiting global warming to 2°C above pre-industrial levels, even with stringent CO₂ mitigation. This study uses an Earth system model to investigate the impact of immediate versus delayed methane mitigation under a low CO2 emissions scenario. Results indicate that methane mitigation starting before 2030, alongside stringent CO2 mitigation, could limit warming to well below 2°C over three centuries. Delaying mitigation to 2040 or later increases the risk of exceeding the 2°C limit, with each 10-year delay adding roughly 0.1°C to peak warming. This is amplified by carbon-climate feedback. Urgent methane mitigation is crucial for achieving the 2°C goal.

Publisher

Communications Earth & Environment

Published On

Jul 12, 2023

Authors

Claude-Michel Nzotungicimpaye, Alexander J. Maclsaac, Kirsten Zickfeld

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