The two-timescale response of Antarctic ocean and sea-ice cover to wind changes: a follow-up

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• Dr. David Ferreira, Univ. Reading
• Wednesday 20 July 2016, 13:00-14:00
• British Antarctic Survey, Room 330B.

If you have a question about this talk, please contact Dr Dave Munday.

Please note change of time and venue. If external to BAS, please email the organiser in advance to gain access to the building

In a previous modelling work, we showed that the response of Antarctic sea surface temperature and sea ice cover to an abrupt (ozone-driven) wind perturbation has two phases: a fast inter-annual (~1-5y) adjustment in which the surface ocean cools and sea ice cover increases, followed by a slower decadal trend leading to a warming of the surface ocean and a reduction of sea ice cover. After briefly summarizing these results, I will present recent efforts to 1) clarify the link between the abrupt ozone experiments and the climate response to a realistic ozone depletion and recovery, 2) estimate the two timescale response in models of the CMIP5 suite and 3) use observational constraints to reduce the large uncertainties on the two timescales.

This talk is part of the British Antarctic Survey - Polar Oceans seminar series series.

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