Fig. 2: The two leading modes of winter SAT anomalies (27°–90°N, 0°–180°E).
From: Sea ice loss of the Barents-Kara Sea enhances the winter warming over the Tibetan Plateau
a, b EOF1 and EOF2 of winter mean SAT in ERA5. c, d Standardized PC time series (blue lines) and AO index (red line), SIC anomaly (green line, unit: %) in the BKS (axis reversed).
