Articles | Volume 12, issue 12
Clim. Past, 12, 2241–2253, 2016
https://doi.org/10.5194/cp-12-2241-2016

Special issue: Southern perspectives on climate and the environment from...

Clim. Past, 12, 2241–2253, 2016
https://doi.org/10.5194/cp-12-2241-2016

Research article 19 Dec 2016

Research article | 19 Dec 2016

Sea ice led to poleward-shifted winds at the Last Glacial Maximum: the influence of state dependency on CMIP5 and PMIP3 models

Louise C. Sime et al.

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Short summary
Latitudinal shifts in the Southern Ocean westerly wind jet could explain large observed changes in the glacial to interglacial ocean CO2 inventory. However there is considerable disagreement in modelled deglacial-warming jet shifts. Here multi-model output is used to show that expansion of sea ice during the glacial period likely caused a slight poleward shift and intensification in the westerly wind jet. Issues with model representation of the winds caused much of the previous disagreement.