Journal article

Dominant Covarying Climate Signals in the Southern Ocean and Antarctic Sea Ice Influence during the Last Three Decades

D Cerrone, G Fusco, I Simmonds, G Aulicino, G Budillon



A composite dataset (comprising geopotential height, sea surface temperature, zonal and meridional surface winds, precipitation, cloud cover, surface air temperature, latent plus sensible heat fluxes, and sea ice concentration) has been investigated with the aim of revealing the dominant time scales of variability from 1982 to 2013. Three covarying climate signals associated with variations in the sea ice distribution around Antarctica have been detected through the application of the multiple-taper method with singular value decomposition (MTM-SVD). Features of the established patterns of variation over the Southern Hemisphere extratropics have been identified in each of these three climate..

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Awarded by Australian Research Council

Funding Acknowledgements

This study was performed in the framework of "Interocean Exchange of Antarctic Intermediate Water in the Southern Hemisphere South of South Africa" and of "Coastal Ecosystem Functioning in a Changing Antarctic Ocean" projects as part of the Italian National Program for Research in Antarctica (PNRA). Part of this research was made possible by an Australian Research Council grant (DP160101997) to Simmonds. Data used in this study are available from NOAA/OAR/ESRL PSD, Boulder, Colorado (online at