Preprints
https://doi.org/10.5194/cp-2015-156
https://doi.org/10.5194/cp-2015-156
15 Jan 2016
 | 15 Jan 2016
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

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.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
R. Roychowdhury and R. M. DeConto
 
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
 
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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