We thank Lucie Vincent of the Meteorological Service of Canada for the provision of the homogenized Canadian surface air temperature, and Dr. Matthew Wheeler of the Centre for Australian Weather and Climate Research at the Bureau of Meteorology for making the MJO index available. We also thank three anonymous reviewers whose comments and suggestions helped to improve our paper. This research was supported in part by the Canadian Foundation for Climate and Atmospheric Sciences and by the Natural Science and Engineering Research Council of Canada.
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