1 June, 2013

Scenario note: pathways towards returning warming to below 1.5°C by 2100

Authors

Joeri Rogelj

This briefing note provides information on illustrative emission pathways from the peer-reviewed literature that achieve limiting global-mean temperature increase to below 1.5°C by 2100. Two pathways are presented. Pathway A is a pathway that starts emission reductions immediately and already sees strong global emission reductions by 2020. Pathway B assumes that only limited emissions reductions are achieved by 2020 and then catches up significantly afterward. A short description of the pathways is followed by a discussion of the caveats.

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Decarbonisation targets and 1.5℃ pathways

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