Fig. 1: Changes in the autumn Arctic sea ice-winter AO connection and the autumn Arctic sea ice-January AO connection. | npj Climate and Atmospheric Science

Fig. 1: Changes in the autumn Arctic sea ice-winter AO connection and the autumn Arctic sea ice-January AO connection.

From: Weakened relationship between November Barents-Kara sea ice and January Arctic Oscillation after the mid-1990s

Fig. 1

a Regression of autumn Arctic SIC (%) onto the normalized winter AO index. Dotted areas denote the 90% confidence levels. Regressions of (b) November, (c) October, and (d) September Arctic SIC onto the normalized January AO index. Black boxes in (a–d) indicate the Barents-Kara Sea. The 21-year sliding correlation between the autumn Barents-Kara SIC index and the normalized winter AO index is shown in (e). Sliding correlation between the normalized January AO index and (f) November, (g) October, and (h) September Barents-Kara SIC index. Black solid (dashed) lines in (e−h) indicate the 95% (90%) confidence levels.

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