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Title: Committed sea-level rise under the Paris Agreement and the legacy of delayed mitigation action
Authors: Mengel, M.Nauels, A.Rogelj, J.Schleussner, C.-F.
Publishers Version: https://doi.org/10.1038/s41467-018-02985-8
Issue Date: 2018
Published in: Nature Communications Vol. 9 (2018), No. 1
Publisher: London : Nature Publishing Group
Abstract: Sea-level rise is a major consequence of climate change that will continue long after emissions of greenhouse gases have stopped. The 2015 Paris Agreement aims at reducing climate-related risks by reducing greenhouse gas emissions to net zero and limiting global-mean temperature increase. Here we quantify the effect of these constraints on global sea-level rise until 2300, including Antarctic ice-sheet instabilities. We estimate median sea-level rise between 0.7 and 1.2 m, if net-zero greenhouse gas emissions are sustained until 2300, varying with the pathway of emissions during this century. Temperature stabilization below 2 °C is insufficient to hold median sea-level rise until 2300 below 1.5 m. We find that each 5-year delay in near-term peaking of CO2 emissions increases median year 2300 sea-level rise estimates by ca. 0.2 m, and extreme sea-level rise estimates at the 95th percentile by up to 1 m. Our results underline the importance of near-term mitigation action for limiting long-term sea-level rise risks.
Keywords: carbon dioxide; carbon dioxide; carbon emission; climate change; greenhouse gas; ice sheet; quantitative analysis; sea level change; temperature; Article; carbon footprint; climate change; environmental decision making; environmental temperature; global change; global climate; greenhouse gas; ice sheet; risk factor; sea level rise
DDC: 360
License: CC BY 4.0 Unported
Link to License: https://creativecommons.org/licenses/by/4.0/
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