Negative emissions - Part 2: Costs, potentials and side effects

Fuss, S.; Lamb, W. F.; Callaghan, M. W.; Hilaire, Jérôme; Creutzig, F.; Amann, T.; Beringer, T.; Oliveira Garcia, W. de; Hartmann, J.; Khanna, T.; Luderer, Gunnar; Nemet, G. F.; Rogelj, J.; Smith, P.; Vicente, J. L. V.; Wilcox, J.; Mar Zamora Dominguez, M. del; Minx, J. C.

doi:10.1088/1748-9326/aabf9f

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Negative emissions - Part 2: Costs, potentials and side effects

Urheber*innen

Fuss, S.
External Organizations;

Lamb, W. F.
External Organizations;

Callaghan, M. W.
External Organizations;

/persons/resource/hilaire

Hilaire, Jérôme
Potsdam Institute for Climate Impact Research;

Creutzig, F.
External Organizations;

Amann, T.
External Organizations;

Beringer, T.
External Organizations;

Oliveira Garcia, W. de
External Organizations;

Hartmann, J.
External Organizations;

Khanna, T.
External Organizations;

/persons/resource/Gunnar.Luderer

Luderer, Gunnar
Potsdam Institute for Climate Impact Research;

Nemet, G. F.
External Organizations;

Rogelj, J.
External Organizations;

Smith, P.
External Organizations;

Vicente, J. L. V.
External Organizations;

Wilcox, J.
External Organizations;

Mar Zamora Dominguez, M. del
External Organizations;

Minx, J. C.
External Organizations;

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Fuss, S., Lamb, W. F., Callaghan, M. W., Hilaire, J., Creutzig, F., Amann, T., Beringer, T., Oliveira Garcia, W. d., Hartmann, J., Khanna, T., Luderer, G., Nemet, G. F., Rogelj, J., Smith, P., Vicente, J. L. V., Wilcox, J., Mar Zamora Dominguez, M. d., Minx, J. C. (2018): Negative emissions - Part 2: Costs, potentials and side effects. - Environmental Research Letters, 13, 6, 063002.
https://doi.org/10.1088/1748-9326/aabf9f

Zitierlink: https://publications.pik-potsdam.de/pubman/item/item_22961

Zusammenfassung

The most recent IPCC assessment has shown an important role for negative emissions technologies (NETs) in limiting global warming to 2 °C cost-effectively. However, a bottom-up, systematic, reproducible, and transparent literature assessment of the different options to remove CO2 from the atmosphere is currently missing. In part 1 of this three-part review on NETs, we assemble a comprehensive set of the relevant literature so far published, focusing on seven technologies: bioenergy with carbon capture and storage (BECCS), afforestation and reforestation, direct air carbon capture and storage (DACCS), enhanced weathering, ocean fertilisation, biochar, and soil carbon sequestration. In this part, part 2 of the review, we present estimates of costs, potentials, and side-effects for these technologies, and qualify them with the authors' assessment. Part 3 reviews the innovation and scaling challenges that must be addressed to realise NETs deployment as a viable climate mitigation strategy. Based on a systematic review of the literature, our best estimates for sustainable global NET potentials in 2050 are 0.5–3.6 GtCO2 yr−1 for afforestation and reforestation, 0.5–5 GtCO2 yr−1 for BECCS, 0.5–2 GtCO2 yr−1 for biochar, 2–4 GtCO2 yr−1 for enhanced weathering, 0.5–5 GtCO2 yr−1 for DACCS, and up to 5 GtCO2 yr−1 for soil carbon sequestration. Costs vary widely across the technologies, as do their permanency and cumulative potentials beyond 2050. It is unlikely that a single NET will be able to sustainably meet the rates of carbon uptake described in integrated assessment pathways consistent with 1.5 °C of global warming.