Arctic amplification under global warming  of 1.5 and 2&thinsp;°C in NorESM1-Happi

Graff, Lise S.; Iversen, Trond; Bethke, Ingo; Debernard, Jens B.; Seland, Øyvind; Bentsen, Mats; Kirkevåg, Alf; Li, Camille; Olivié, Dirk J. L.

doi:https://doi.org/10.5194/esd-10-569-2019

Articles | Volume 10, issue 3

https://doi.org/10.5194/esd-10-569-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/esd-10-569-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 10, issue 3

Research article

|

23 Sep 2019

Research article |

| 23 Sep 2019

Arctic amplification under global warming of 1.5 and 2 °C in NorESM1-Happi

Lise S. Graff, Trond Iversen, Ingo Bethke, Jens B. Debernard, Øyvind Seland, Mats Bentsen, Alf Kirkevåg, Camille Li, and Dirk J. L. Olivié

Supplement

https://doi.org/10.5194/esd-10-569-2019-supplement

Data sets

NorESM HAPPI output – All-Hist raw Bethke, I. (2019) https://doi.org/10.11582/2019.00006

NorESM HAPPI output – Plus15-Future raw Bethke, I. (2019) https://doi.org/10.11582/2019.00002

NorESM HAPPI output – Plus20-Future raw Bethke, I. (2019) https://doi.org/10.11582/2019.00003

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Short summary

Differences between a 1.5 and a 2.0 °C warmer global climate than 1850 conditions are discussed based on a suite of global atmosphere-only, fully coupled, and slab-ocean runs with the Norwegian Earth System Model. Responses, such as the Arctic amplification of global warming, are stronger with the fully coupled and slab-ocean configurations. While ice-free Arctic summers are rare under 1.5 °C warming in the slab-ocean runs, they are estimated to occur 18 % of the time under 2.0 °C warming.