Fig. 2: Ural Blocking (UB) event characteristics under positive Arctic Oscillation (AO) regimes. | npj Climate and Atmospheric Science

Fig. 2: Ural Blocking (UB) event characteristics under positive Arctic Oscillation (AO) regimes.

From: Enhanced persistence of Ural blocking under strong positive AO: the role of North Atlantic storm tracks and potential vorticity dynamics

Fig. 2: Ural Blocking (UB) event characteristics under positive Arctic Oscillation (AO) regimes.The alternative text for this image may have been generated using AI.

a–c UB events identified during strong positive AO (SPAO; 18 events): a spatial distribution of blocking events, b histogram of blocking duration (days), and c histogram of blocking intensity measured as 500-hPa geopotential height (GPH) anomaly (gpm). d–f Same as (a–c), but for weak positive AO (WPAO; 15 events).

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