noun
subtropical high; subtropical anticyclone
Meteorological term for a semi-permanent high-pressure system in the subtropics, often associated with clear skies and hot weather.
夏の天気図では、亜熱帯高気圧が太平洋上に広がっている。
On summer weather maps, the subtropical high extends over the Pacific Ocean.
Compound of 亜熱帯 (あねったい, 'subtropical') and 高気圧 (こうきあつ, 'high atmospheric pressure').