Arctic sea ice simulation in the PlioMIP ensemble

F. W. Howell, A. M. Haywood, B. L. Otto-Bliesner, F. Bragg, W. L. Chan, M. A. Chandler, C. Contoux, Y. Kamae, A. Abe-Ouchi, N. A. Rosenbloom, C. Stepanek, Z. S. Zhang

Research output: Contribution to journalArticle (Academic Journal)

10 Citations (Scopus)
355 Downloads (Pure)

Abstract

Eight general circulation models have simulated the mid-Pliocene warm period (mid-Pliocene, 3.264 to 3.025 Ma) as part of the Pliocene Modelling Intercomparison Project (PlioMIP). Here, we analyse and compare their simulation of Arctic sea ice for both the pre-industrial period and the mid-Pliocene. Mid-Pliocene sea ice thickness and extent is reduced, and the model spread of extent is more than twice the pre-industrial spread in some summer months. Half of the PlioMIP models simulate ice-free conditions in the mid-Pliocene. This spread amongst the ensemble is in line with the uncertainties amongst proxy reconstructions for mid-Pliocene sea ice extent. Correlations between mid-Pliocene Arctic temperatures and sea ice extents are almost twice as strong as the equivalent correlations for the pre-industrial simulations. The need for more comprehensive sea ice proxy data is highlighted, in order to better compare model performances.
Original languageEnglish
Pages (from-to)749-767
Number of pages19
JournalClimate of the Past
Volume12
Issue number3
Early online date23 Mar 2016
DOIs
Publication statusPublished - Mar 2016

Keywords

  • model intercomparison project
  • mid-pliocene climate
  • meridional
  • overturning circulation coupled model experimental-design
  • warm period ocean cover
  • variability thickness

Fingerprint Dive into the research topics of 'Arctic sea ice simulation in the PlioMIP ensemble'. Together they form a unique fingerprint.

  • Projects

    Cite this

    Howell, F. W., Haywood, A. M., Otto-Bliesner, B. L., Bragg, F., Chan, W. L., Chandler, M. A., Contoux, C., Kamae, Y., Abe-Ouchi, A., Rosenbloom, N. A., Stepanek, C., & Zhang, Z. S. (2016). Arctic sea ice simulation in the PlioMIP ensemble. Climate of the Past, 12(3), 749-767. https://doi.org/10.5194/cp-12-749-2016