Journal cover Journal topic
Climate of the Past An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 3.470 IF 3.470
  • IF 5-year value: 4.009 IF 5-year
    4.009
  • CiteScore value: 3.45 CiteScore
    3.45
  • SNIP value: 1.166 SNIP 1.166
  • IPP value: 3.28 IPP 3.28
  • SJR value: 1.929 SJR 1.929
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 64 Scimago H
    index 64
  • h5-index value: 43 h5-index 43
Preprints
https://doi.org/10.5194/cp-2020-59
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-2020-59
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: technical note 28 Apr 2020

Submitted as: technical note | 28 Apr 2020

Review status
This preprint is currently under review for the journal CP.

Technical note: Pleistocene climate sensitivity to CO2 forcing is path dependent in reconstructions

Roger M. Cooke1 and Willy P. Aspinall2 Roger M. Cooke and Willy P. Aspinall
  • 1Resources for the Future, Washington DC, 200036 USA
  • 2School of Earth Sciences, University of Bristol, Bristol, UK

Abstract. Improved high-resolution paleo records of atmospheric carbon dioxide (CO2) concentrations and reconstructions of Earth’s surface temperature are available. We analyse one authoritative Pleistocene dataset to explore how the climate sensitivity parameter S varies under different system states, using linear regression of mean annual surface temperature changes against CO2 forcing changes. Data are partitioned by path (deglaciation or glaciation). On the whole data set, S = 2.04 K/Wm−2 and CO2 forcing explains 64 % of the variance in temperature. During deglaciation periods, S = 2.34 K/Wm−2, explaining 75 % of the temperature variance; during glaciations, S = 1.59 K/Wm−2 and explains 48 % of the temperature variance. Possible process-related explanations are conjectured.

Roger M. Cooke and Willy P. Aspinall

Interactive discussion

Status: open (until 23 Jun 2020)
Status: open (until 23 Jun 2020)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement

Roger M. Cooke and Willy P. Aspinall

Roger M. Cooke and Willy P. Aspinall

Viewed

Total article views: 212 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
174 37 1 212 13 0 2
  • HTML: 174
  • PDF: 37
  • XML: 1
  • Total: 212
  • Supplement: 13
  • BibTeX: 0
  • EndNote: 2
Views and downloads (calculated since 28 Apr 2020)
Cumulative views and downloads (calculated since 28 Apr 2020)

Viewed (geographical distribution)

Total article views: 190 (including HTML, PDF, and XML) Thereof 190 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 02 Jun 2020
Publications Copernicus
Download
Short summary
The climate sensitivity parameter S varies under different system states, using linear regression of mean annual surface temperature changes against CO2 forcing changes. Pleistocene data are partitioned by path (deglaciation or glaciation). On the whole data set, S = 2.04 K/Wm−2 and CO2 forcing explains 64 % of the temperature variance. During deglaciation periods, S = 2.34 K/Wm−2, explaining 75 % of the temperature variance; during glaciations, S = 1.59 K/Wm−2 and explains 48 % of the variance.
The climate sensitivity parameter S varies under different system states, using linear...
Citation