Fig. 15
From: A large-scale dataset for training deep learning segmentation and tracking of extreme weather

Seasonal global atmospheric blocking frequencies based on the geopotential height anomaly detection algorithm by Pinheiro et al. Left - June, July, August; right - December, January, February. (figure directly from Pinheiro et al.6, Fig. 6 center row, Open Access, Creative Commons Attribution version 4.0 International License).