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- Title
Arctic sea ice simulation in the PlioMIP ensemble.
- Authors
Howell, Fergus W.; Haywood, Alan M.; Otto-Bliesner, Bette L.; Bragg, Fran; Wing-Le Chan; Chandler, Mark A.; Contoux, Camille; Youichi Kamae; Ayako Abe-Ouchi; Rosenbloom, Nan A.; Stepanek, Christian; Zhongshi Zhang
- 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 Intercompari-son 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.
- Subjects
ANTARCTICA; SEA ice; MARINE geophysics; ICEBERGS; PLIOCENE Epoch
- Publication
Climate of the Past, 2016, Vol 12, Issue 3, p749
- ISSN
1814-9324
- Publication type
Article
- DOI
10.5194/cp-12-749-2016