The Okhotsk High is a semi-permanent high pressure system that forms over the Sea of Okhotsk during the summer months. Its associated air mass is maritime polar, marked with frequent sea fog over ocean areas, and cool and moist conditions over land. It typically dominates the weather pattern over eastern Russia, northern Japan and the Korean Peninsula during the spring and summer months.
See also Weather of Korea
References
Bibliography Coherent amplification of the Okhotsk high, Korean trough, and northwestern Pacific subtropical high during heavy rainfall over Japan in August 2021 https://link.springer.com/article/10.1186/s40645-023-00598-4 Influence of Okhotsk Sea blocking on summer precipitation over South Korea https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/joc.7432
