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. 2020 May 1;12(5):e2019MS002037. doi: 10.1029/2019MS002037

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©2020. The Authors.

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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jame21113-fig-0001 — Estimation of climate sensitivity by means of equation (1). Individual years of the coupled model experiment with abruptly quadrupled CO₂ is shown as blue markers and a linear regression as a dashed line. Red and brown markers are the 30‐year averages in amip4K experiments with uniformly raised SSTs in two versions of ECHAM.