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COP21
Vital United Nations climate talks, billed as one of the last chances to stave off climate breakdown, will not produce the breakthrough needed to fulfil the aspiration of the Paris agreement, key players in the talks have conceded.
For the last three decades, environmental groups have diligently lobbied their governments to slow carbon and methane emissions. Activists have put pressure on industry too. They’ve been smart, full of energy and creative. Yet, despite several big international treaties — especially the Kyoto Protocol and the Paris Agreement — and some impressive accomplishments including holding up pipelines and getting institutional investors to divest from fossil fuels, the pollution and the warming have not stopped.
1.5 °C scenarios reported by the Intergovernmental Panel on Climate Change (IPCC) rely on combinations of controversial negative emissions and unprecedented technological change, while assuming continued growth in gross domestic product (GDP). Thus far, the integrated assessment modelling community and the IPCC have neglected to consider degrowth sce- narios, where economic output declines due to stringent climate mitigation. Hence, their potential to avoid reliance on negative emissions and speculative rates of technological change remains unexplored. As a first step to address this gap, this paper compares 1.5 °C degrowth scenarios with IPCC archetype scenarios, using a simplified quantitative repre- sentation of the fuel-energy-emissions nexus.
The number of countries announcing pledges to achieve net zero emissions over the coming decades continues to grow. But the pledges by governments to date – even if fully achieved – fall well short of what is required to bring global energy-related carbon dioxide emissions to net zero by 2050 and give the world an even chance of limiting the global temperature rise to 1.5 °C.
1.5 °C degrowth scenarios suggest the need for new mitigation pathways
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1. Decides to adopt the Paris Agreement under the United Nations Framework Convention on Climate Change (hereinafter referred to as “the Agreement”) as contained in the annex; ...
