Analyses of wind and significant wave height support reanalysis - based evidence for an increase in extratropical storm activity in the Northern Hemisphere in recent decades until the late 1990s. (ipcc.ch)
In addition, wave simulations show higher significant wave heights of > 0.4 m in the north - eastern Atlantic by the 2080s (Woolf et al., 2002; Tsimplis et al., 2004a; Wolf and Woolf, 2006). (ipcc.ch)
This series of plots shows significant wave height (in meters, indicated by color scale) in the western Arctic Ocean during the 2016 Arctic cyclone, from August 14 to August 16, 2016, as predicted by a numerical wave model (WAVEWATCH III), run at the Naval Research Laboratory (NRL). (nsidc.org)