Contribution of Atmospheric Advection to the Amplified Winter Warming in the Arctic North Atlantic Region

Figure 3

(a) Probability distribution map for DJF source regions of Ny-Ålesund air at 1500 m height. (b) Change in probability expressed as difference P2 (Dec. 2006–Feb. 2016) minus P1 (Dec. 1996–Feb. 2006). Statistical significance (99%) is indicated by dots and only shown for changes exceeding ±0.1%/circle (see text for details). (c) Ny-Ålesund temperature anomaly as a function of source region. The ATL box (see Section 3.1) is drawn in panels (b) and (c).

(a)

(b)

(c)