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Analytically tractable climate-carbon cycle feedbacks under 21st century anthropogenic forcing
Stockholms universitet, Naturvetenskapliga fakulteten, Stockholm Resilience Centre. The Australian National University, Australia.ORCID-id: 0000-0001-9719-9826
Stockholms universitet, Naturvetenskapliga fakulteten, Stockholm Resilience Centre. Potsdam Institute for Climate Impact Research, Germany.ORCID-id: 0000-0001-5233-7703
Stockholms universitet, Naturvetenskapliga fakulteten, Stockholm Resilience Centre.ORCID-id: 0000-0001-7335-5679
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Antal upphovsmän: 112018 (Engelska)Ingår i: Earth System Dynamics, ISSN 2190-4979, E-ISSN 2190-4987, Vol. 9, nr 2, s. 507-523Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Changes to climate-carbon cycle feedbacks may significantly affect the Earth system's response to greenhouse gas emissions. These feedbacks are usually analysed from numerical output of complex and arguably opaque Earth system models. Here, we construct a stylised global climate-carbon cycle model, test its output against comprehensive Earth system models, and investigate the strengths of its climate-carbon cycle feedbacks analytically. The analytical expressions we obtain aid understanding of carbon cycle feedbacks and the operation of the carbon cycle. Specific results include that different feedback formalisms measure fundamentally the same climate-carbon cycle processes; temperature dependence of the solubility pump, biological pump, and CO2 solubility all contribute approximately equally to the ocean climate-carbon feedback; and concentration-carbon feedbacks may be more sensitive to future climate change than climate-carbon feedbacks. Simple models such as that developed here also provide workbenches for simple but mechanistically based explorations of Earth system processes, such as interactions and feedbacks between the planetary boundaries, that are currently too uncertain to be included in comprehensive Earth system models.

Ort, förlag, år, upplaga, sidor
2018. Vol. 9, nr 2, s. 507-523
Nationell ämneskategori
Geovetenskap och miljövetenskap
Identifikatorer
URN: urn:nbn:se:su:diva-157743DOI: 10.5194/esd-9-507-2018ISI: 000433128700001OAI: oai:DiVA.org:su-157743DiVA, id: diva2:1236306
Tillgänglig från: 2018-08-01 Skapad: 2018-08-01 Senast uppdaterad: 2018-12-20Bibliografiskt granskad

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Av författaren/redaktören
Lade, Steven J.Donges, Jonathan F.Fetzer, IngoBeer, ChristianCornell, Sarah E.Norberg, JonRockström, JohanSteffen, Will
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Stockholm Resilience CentreInstitutionen för miljövetenskap och analytisk kemi
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Earth System Dynamics
Geovetenskap och miljövetenskap

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