Making sense of palaeoclimate sensitivity
Making sense of palaeoclimate sensitivity
Many palaeoclimate studies have quantified pre-anthropogenic climate change to calculate climate sensitivity (equilibrium temperature change in response to radiative forcing change), but a lack of consistent methodologies produces a wide range of estimates and hinders comparability of results. Here we present a stricter approach, to improve intercomparison of palaeoclimate sensitivity estimates in a manner compatible with equilibrium projections for future climate change. Over the past 65 million years, this reveals a climate sensitivity (in K?W?1?m2) of 0.3–1.9 or 0.6–1.3 at 95% or 68% probability, respectively. The latter implies a warming of 2.2–4.8?K per doubling of atmospheric CO2, which agrees with IPCC estimates.
climate science, earth sciences
683-691
Rohling, E.J.
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Sluijs, A.
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Dijkstra, H.A.
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Köhler, P.
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van de Wal, R.S.W.
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von der Heydt, A.S.
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Beerling, D.J.
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Berger, A.
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Bijl, P.K.
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Crucifix, M.
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DeConto, R.
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Drijfhout, S.S.
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Fedorov, A.
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Foster, G.L.
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Ganopolski, A.
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Hansen, J.
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Hönisch, B.
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Hooghiemstra, H.
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Huber, M.
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Huybers, P.
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Knutti, R.
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Lea, D.W.
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Lourens, L.J.
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Lunt, D.
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Masson-Demotte, V.
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Medina-Elizalde, M.
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Otto-Bliesner, B.
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Pagani, M.
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Pälike, H.
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Renssen, H.
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Royer, D.L.
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Siddall, M.
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Valdes, P.
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Zachos, J.C.
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Zeebe, R.E.
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29 November 2012
Rohling, E.J.
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Sluijs, A.
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Dijkstra, H.A.
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Köhler, P.
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van de Wal, R.S.W.
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von der Heydt, A.S.
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Beerling, D.J.
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Berger, A.
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Bijl, P.K.
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Crucifix, M.
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DeConto, R.
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Drijfhout, S.S.
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Fedorov, A.
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Foster, G.L.
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Ganopolski, A.
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Hansen, J.
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Hönisch, B.
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Hooghiemstra, H.
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Huber, M.
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Huybers, P.
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Knutti, R.
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Lea, D.W.
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Lourens, L.J.
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Lunt, D.
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Masson-Demotte, V.
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Medina-Elizalde, M.
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Otto-Bliesner, B.
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Pagani, M.
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Pälike, H.
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Renssen, H.
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Royer, D.L.
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Siddall, M.
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Valdes, P.
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Zachos, J.C.
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Zeebe, R.E.
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