Figure 3: Atmospheric and sea ice responses after the termination of Storm Frank.
From: Major cause of unprecedented Arctic warming in January 2016: Critical role of an Atlantic windstorm
(a,d) averaged SAT anomalies (shading) and individual blocking areas (coloured closed curves; refer to Methods), (b,e) averaged 500-hPa geopotential height anomalies, and (c,f) sea ice concentration anomalies. Upper rows and lower rows contain the first seven days (1–7 January) and the next 13 days (8–20 January), respectively. In (a) and (d), the coloured curves denote the timing of the blocking event with brighter colours for earlier dates and darker colours for later dates. In (c) and (f), the purple coloured lines depict climatological sea ice edge boundaries (sea ice concentration of 15%). As with previous figures, 30 December is defined as day 0. The NCAR Command Language (NCL) with version 6.3.0 (http://dx.doi.org/10.5065/D6WD3XH5) was used to generate the maps in this figure.
