Articles | Volume 12, issue 10
https://doi.org/10.5194/tc-12-3355-2018
https://doi.org/10.5194/tc-12-3355-2018
Brief communication
 | 
23 Oct 2018
Brief communication |  | 23 Oct 2018

Brief communication: Solar radiation management not as effective as CO2 mitigation for Arctic sea ice loss in hitting the 1.5 and 2 °C COP climate targets

Jeff K. Ridley and Edward W. Blockley

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Cited articles

Baek, H. J., Lee, J., Lee, H. S., Hyun, Y. K., Cho, C., Kwon, W. T., Marzin, C., Gan, S. Y., Kim, M. J., Choi, D. H., Lee, J., Lee, J., Boo, K. O., Kang, H. S., and Byun, Y. H.: Climate change in the 21st century simulated by HadGEM2-AO under representative concentration pathways, Asia-Pacific, J. Atmos. Sci., 49, 603, https://doi.org/10.1007/s13143-013-0053-7, 2013. 
Chen, Y. and Xin, Y. : Implications of geoengineering under the 1.5 C target: Analysis and policy suggestions, Adv. Clim. Change Res., 8, 123–129, https://doi.org/10.1016/j.accre.2017.05.003, 2017. 
Comiso, J. C., Meier, W. N., and Gersten, R.: Variability and trends in the Arctic Sea ice cover: Results from different techniques, J. Geophys. Res., 122, 6883-6900, https://doi.org/10.1002/2017JC012768, 2017. 
Crutzen, P.: Albedo enhancement by stratospheric sulfur injections: A contribution to resolve a policy dilemma, Clim. Change, 77, 211–220, https://doi.org/10.1007/s10584-006-9101-y, 2006. 
Day, J. J., Bamber, J. L., and Valdes, P. J.: The Greenland Ice Sheet's surface mass balance in a seasonally sea ice-free Arctic, J. Geophys. Res.-Earth, 118, 1533–1544, https://doi.org/10.1002/jgrf.20112, 2013. 
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Short summary
The climate change conference held in Paris in 2016 made a commitment to limiting global-mean warming since the pre-industrial era to well below 2 °C and to pursue efforts to limit the warming to 1.5 °C. Since global warming is already at 1 °C, the 1.5 °C can only be achieved at considerable cost. It is thus important to assess the risks associated with the higher target. This paper shows that the decline of Arctic sea ice, and associated impacts, can only be halted with the 1.5 °C target.