Articles | Volume 15, issue 6
The Cryosphere, 15, 3013–3019, 2021
https://doi.org/10.5194/tc-15-3013-2021
The Cryosphere, 15, 3013–3019, 2021
https://doi.org/10.5194/tc-15-3013-2021

Brief communication 30 Jun 2021

Brief communication | 30 Jun 2021

Brief communication: Reduction in the future Greenland ice sheet surface melt with the help of solar geoengineering

Xavier Fettweis et al.

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Preprint under review for TC
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Cited articles

Delhasse, A., Hanna, E., Kittel, C., and Fettweis, X.: Brief communication: CMIP6 does not suggest any atmospheric blocking increase in summer over Greenland by 2100, Int. J. Climatol., 41, 2589–2596, https://doi.org/10.1002/joc.6977, 2021. 
Feldmann, J., Levermann, A., and Mengel, M.: Stabilizing the West Antarctic Ice Sheet by surface mass deposition, Sci. Adv., 5, eaaw4132, https://doi.org/10.1126/sciadv.aaw4132, 2019. 
Fettweis, X.: TC, Greenland ice sheet and geoengineering: MAR outputs, Zenodo [data set], https://doi.org/10.5281/zenodo.5024965, 2021. 
Fettweis, X., Franco, B., Tedesco, M., van Angelen, J. H., Lenaerts, J. T. M., van den Broeke, M. R., and Gallée, H.: Estimating the Greenland ice sheet surface mass balance contribution to future sea level rise using the regional atmospheric climate model MAR, The Cryosphere, 7, 469–489, https://doi.org/10.5194/tc-7-469-2013, 2013. 
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Short summary
Without any reduction in our greenhouse gas emissions, the Greenland ice sheet surface mass loss can be brought in line with a medium-mitigation emissions scenario by reducing the solar downward flux at the top of the atmosphere by 1.5 %. In addition to reducing global warming, these solar geoengineering measures also dampen the well-known positive melt–albedo feedback over the ice sheet by 6 %. However, only stronger reductions in solar radiation could maintain a stable ice sheet in 2100.