Arctic Dipole (SLP EOF2 >70°N)

PC2 of monthly Oct–Mar SLP anomalies north of 70°N, projected daily. Positive = high SLP over the Canadian Archipelago/Greenland, low over the Kara–Laptev seas (enhanced transpolar drift, sea-ice export through Fram Strait). — Wu, Wang & Walsh 2006, J. Climate 19, 210–225, doi:10.1175/JCLI3619.1; Overland & Wang 2010, Tellus 62A, 1–9