Nicolas Fauchereau was funded by the SRP Project TA 2010 035 (EEOC005), CSIR YREF Project EEOC003, and CSIR-UCT Cooperation Project EEOC009. 20CR data were downloaded (from http://dss.ucar.edu/datasets/ds131.1/). NCEP-2 reanalysis were downloaded (from http://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis2.html). Calculations were performed using HPC resources from DSI-CCUB (Université de Bourgogne). Constructive comments and suggestions from three anonymous reviewers greatly helped improve the manuscript. The authors would also like to thank Gil Compo, Julie Jones, Gareth Marshall, and James Renwick for their helpful discussions and comments.
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