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Climate of the Past An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/cp-2015-156
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/cp-2015-156
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Submitted as: research article 15 Jan 2016

Submitted as: research article | 15 Jan 2016

Review status
This discussion paper is a preprint. It has been under review for the journal Climate of the Past (CP). The manuscript was not accepted for further review after discussion.

Interhemispheric bias in earth's climate response to orbital forcing

R. Roychowdhury and R. M. DeConto R. Roychowdhury and R. M. DeConto
  • Department of Geoscience, University of Massachusetts, Amherst, USA

Abstract. The climate response to orbital forcing shows a distinct hemispheric asymmetry due to the unequal distribution of land in the Northern vs. Southern hemispheres. This asymmetry is examined using a Global Climate Model (GCM) and a Land Hemispheric Bias (LHB) is quantified for each hemisphere. The results show how changes in obliquity and precession translate into variations in the calculated LHB. We find that the global climate response to specific past orbits is likely unique and modified by complex climate-ocean-cryosphere interactions that remain poorly known and difficult to model. Nonetheless, these results provide a baseline for interpreting contemporaneous proxy climate data spanning a broad range of latitudes, which maybe especially useful in paleoclimate data-model comparisons, and individual time-continuous records exhibiting orbital cyclicity.

R. Roychowdhury and R. M. DeConto
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
  • RC1: 'Review', Anonymous Referee #1, 14 Mar 2016 Printer-friendly Version
  • RC2: 'RC2', Anonymous Referee #2, 27 Mar 2016 Printer-friendly Version
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
  • RC1: 'Review', Anonymous Referee #1, 14 Mar 2016 Printer-friendly Version
  • RC2: 'RC2', Anonymous Referee #2, 27 Mar 2016 Printer-friendly Version
R. Roychowdhury and R. M. DeConto
R. Roychowdhury and R. M. DeConto
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