Journal cover Journal topic
Climate of the Past An interactive open-access journal of the European Geosciences Union
doi:10.5194/cp-2015-156
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
15 Jan 2016
Review status
This discussion paper 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 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.

Citation: Roychowdhury, R. and DeConto, R. M.: Interhemispheric bias in earth's climate response to orbital forcing, Clim. Past Discuss., doi:10.5194/cp-2015-156, 2016.
R. Roychowdhury and R. M. DeConto
Interactive discussionStatus: 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 
AC1: 'Response', Rajarshi Roychowdhury, 01 May 2016 Printer-friendly Version Supplement 
 
RC2: 'RC2', Anonymous Referee #2, 27 Mar 2016 Printer-friendly Version 
AC2: 'Response', Rajarshi Roychowdhury, 01 May 2016 Printer-friendly Version 
R. Roychowdhury and R. M. DeConto
R. Roychowdhury and R. M. DeConto

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