Articles | Volume 7, issue 3
Earth Syst. Dynam., 7, 597–609, 2016
Earth Syst. Dynam., 7, 597–609, 2016
Peer-reviewed comment
13 Jul 2016
Peer-reviewed comment | 13 Jul 2016

Comment on "Scaling regimes and linear/nonlinear responses of last millennium climate to volcanic and solar forcing" by S. Lovejoy and C. Varotsos (2016)

Kristoffer Rypdal and Martin Rypdal

Related authors

Empirical growth models for the renewable energy sector
Kristoffer Rypdal
Adv. Geosci., 45, 35–44,,, 2018
Short summary
Can Limits to Growth in the Renewable Energy Sector be Inferred by Curve Fitting to Historical Data?
Kristoffer Rypdal
Earth Syst. Dynam. Discuss.,,, 2017
Revised manuscript not accepted
Short summary
Are there multiple scaling regimes in Holocene temperature records?
Tine Nilsen, Kristoffer Rypdal, and Hege-Beate Fredriksen
Earth Syst. Dynam., 7, 419–439,,, 2016
Short summary
Late Quaternary temperature variability described as abrupt transitions on a 1/f noise background
Martin Rypdal and Kristoffer Rypdal
Earth Syst. Dynam., 7, 281–293,,, 2016
Short summary
Global warming projections derived from an observation-based minimal model
K. Rypdal
Earth Syst. Dynam., 7, 51–70,,, 2016
Short summary

Related subject area

Dynamics of the Earth system: models
A methodology for the spatiotemporal identification of compound hazards: wind and precipitation extremes in Great Britain (1979–2019)
Aloïs Tilloy, Bruce D. Malamud, and Amélie Joly-Laugel
Earth Syst. Dynam., 13, 993–1020,,, 2022
Short summary
MESMER-M: an Earth system model emulator for spatially resolved monthly temperature
Shruti Nath, Quentin Lejeune, Lea Beusch, Sonia I. Seneviratne, and Carl-Friedrich Schleussner
Earth Syst. Dynam., 13, 851–877,,, 2022
Short summary
Evaluation of convection-permitting extreme precipitation simulations for the south of France
Linh N. Luu, Robert Vautard, Pascal Yiou, and Jean-Michel Soubeyroux
Earth Syst. Dynam., 13, 687–702,,, 2022
Short summary
Agricultural management effects on mean and extreme temperature trends
Aine M. Gormley-Gallagher, Sebastian Sterl, Annette L. Hirsch, Sonia I. Seneviratne, Edouard L. Davin, and Wim Thiery
Earth Syst. Dynam., 13, 419–438,,, 2022
Short summary
Estimating the lateral transfer of organic carbon through the European river network using a land surface model
Haicheng Zhang, Ronny Lauerwald, Pierre Regnier, Philippe Ciais, Kristof Van Oost, Victoria Naipal, Bertrand Guenet, and Wenping Yuan
Earth Syst. Dynam. Discuss.,,, 2022
Revised manuscript under review for ESD
Short summary

Cited articles

Caldeira, K. and Myhrvold, N.: Projections of the pace of warming following an abrupt increase in atmospheric carbon dioxide concentration, Environ. Res. Lett., 8, 034039,, 2013.
Fredriksen, H.-B. and Rypdal, K.: Spectral Characteristics of Instrumental and Climate Model Surface Temperatures, J. Climate, 29, 1253–1268,, 2016.
Geoffroy, O., Saint-Martin, D., Olivié, D. J. L., Voldoire, A., Bellon, G., and Tytcá, S.: Transient Climate Response in a Two-Layer Energy-Balance Model. Part I: Analytical Solution and Parameter Calibration Using CMIP5 AOGCM Experiments, J. Climate, 6, 1841–1857,, 2013.
Held, I. M., Winton, M., Takahashi, K., Delworth, T., Zenge, F., and Vallis, G. K..: Probing the Fast and Slow Components of Global Warming by Returning Abruptly to Preindustrial Forcing, J. Climate, 23, 2418–2427,, 2010.
Kirkevåg, A., Iversen, T., Kristjánsson, J. E., Seland, Ø., and Debernard, J. B.: On the additivity of climate response to anthropogenic aerosols and CO2, and the enhancement of future global warming by carbonaceous aerosols, Tellus A, 60, 513–527,, 2008.
Short summary
This comment on the paper by Lovejoy and Varotsos demonstrates that their methods for establishing nonlinearity in the global temperature response in climate models are flawed. One of their methods is based on an invalid approximation, which when corrected does not falsify the hypothesis that the response is linear. This conclusion is enforced when internal variability in the models are accounted for. The other results in their paper are also shown to be reproduced by linear-response models.
Final-revised paper