Fig. (3) Anomalies of the Z500 (m, left column) and T850 (C°, right column) for winter 2013/14 (top row) and regressed on the EA+TNH index (bottom row). Anomalies for winter 2013/14 are calculated relative to the mean from 1981 to 2010. A red box in Fig. (3b) is 70°-110°W longitude and 45°-60°N latitude.