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Short term policies to keep the door open for Paris climate goals

Urheber*innen
/persons/resource/Elmar.Kriegler

Kriegler,  Elmar
Potsdam Institute for Climate Impact Research;

/persons/resource/Bertram

Bertram,  Christoph
Potsdam Institute for Climate Impact Research;

Kuramochi,  T.
External Organizations;

Jakob,  M.
External Organizations;

/persons/resource/michaja.pehl

Pehl,  Michaja
Potsdam Institute for Climate Impact Research;

/persons/resource/stevanovic

Stevanović,  Miodrag
Potsdam Institute for Climate Impact Research;

Höhne,  N.
External Organizations;

/persons/resource/Gunnar.Luderer

Luderer,  Gunnar
Potsdam Institute for Climate Impact Research;

Minx,  J. C.
External Organizations;

Fekete,  H.
External Organizations;

/persons/resource/hilaire

Hilaire,  Jérôme
Potsdam Institute for Climate Impact Research;

Luna,  L.
External Organizations;

/persons/resource/Alexander.Popp

Popp,  Alexander
Potsdam Institute for Climate Impact Research;

/persons/resource/Jan.Steckel

Steckel,  Jan Christoph
Potsdam Institute for Climate Impact Research;

Sterl,  S.
External Organizations;

/persons/resource/yalew

Yalew,  Amsalu Woldie
Potsdam Institute for Climate Impact Research;

/persons/resource/Jan.Dietrich

Dietrich,  Jan Philipp
Potsdam Institute for Climate Impact Research;

/persons/resource/Ottmar.Edenhofer

Edenhofer,  Ottmar
Potsdam Institute for Climate Impact Research;

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Volltexte (frei zugänglich)

8121oa.pdf
(Verlagsversion), 3MB

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Zitation

Kriegler, E., Bertram, C., Kuramochi, T., Jakob, M., Pehl, M., Stevanović, M., Höhne, N., Luderer, G., Minx, J. C., Fekete, H., Hilaire, J., Luna, L., Popp, A., Steckel, J. C., Sterl, S., Yalew, A. W., Dietrich, J. P., Edenhofer, O. (2018): Short term policies to keep the door open for Paris climate goals. - Environmental Research Letters, 13, 7, 074022.
https://doi.org/10.1088/1748-9326/aac4f1


Zitierlink: https://publications.pik-potsdam.de/pubman/item/item_22500
Zusammenfassung
Climate policy needs to account for political and social acceptance. Current national climate policy plans proposed under the Paris Agreement lead to higher emissions until 2030 than cost-effective pathways towards the Agreements' long-term temperature goals would imply. Therefore, the current plans would require highly disruptive changes, prohibitive transition speeds, and large long-term deployment of risky mitigation measures for achieving the agreement's temperature goals after 2030. Since the prospects of introducing the cost-effective policy instrument, a global comprehensive carbon price in the near-term, are negligible, we study how a strengthening of existing plans by a global roll-out of regional policies can ease the implementation challenge of reaching the Paris temperature goals. The regional policies comprise a bundle of regulatory policies in energy supply, transport, buildings, industry, and land use and moderate, regionally differentiated carbon pricing. We find that a global roll-out of these policies could reduce global CO2 emissions by an additional 10 GtCO2eq in 2030 compared to current plans. It would lead to emissions pathways close to the levels of cost-effective likely below 2 °C scenarios until 2030, thereby reducing implementation challenges post 2030. Even though a gradual phase-in of a portfolio of regulatory policies might be less disruptive than immediate cost-effective carbon pricing, it would perform worse in other dimensions. In particular, it leads to higher economic impacts that could become major obstacles in the long-term. Hence, such policy packages should not be viewed as alternatives to carbon pricing, but rather as complements that provide entry points to achieve the Paris climate goals.