Japan-Sea Polar-Airmass Convergence Zone; JPCZ
A meteorological term referring to a convergence zone that forms over the Sea of Japan when cold polar air masses meet. Often abbreviated as JPCZ in English contexts.
The Japan-Sea Polar-Airmass Convergence Zone can bring heavy snow to the Sea of Japan side in winter.
A compound of 日本海 (Sea of Japan), 寒帯 (polar region), 気団 (air mass), and 収束帯 (convergence zone). The term is a direct translation of the English meteorological concept.