Graphical Abstract

Kawazoe, S., M. Fujita, S. Sugimoto, Y. Okada, and S. Watanabe, 2020: Projected changes of extremely cool summer days over northeastern Japan simulated by 20 km-mesh large ensemble experiment. J. Meteor. Soc. Japan, 98,
https://doi.org/10.2151/jmsj.2020-067
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Plain Language Summary: Future changes to extreme cool days (ECDs) during the summer season (June – August) in northeast Japan is examined using the database for Policy Decision making for Future climate change (d4PDF) large ensemble experiments. We applied self-organizing maps (SOMs) to mean sea level pressure (MSLP) patterns, which were then classified into four clusters with high ECD occurrences. The response of the four clusters to a 2K and 4K warming scenarios was investigated, focusing on the role of low-level thermal advection.

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