subtropical high Surface high-pressure cells that are especially prominent and persistent over oceans at around 30° latitude. The anticyclones develop below the subtropical jet stream from subsiding air. The development tends to shift towards the equator in winter and towards the pole in summer. The high pressure is weaker over continents in summer. See also Azores high and Bermuda high.

subtropical high Surface high-pressure cells, especially prominent and persistent over oceans at around 30° latitude. The anticyclones develop below the subtropical jet stream from subsiding air. The development tends to shift equatorward in winter and poleward in summer. The high pressure is weaker over continents in summer. See also AZORES HIGH; and BERMUDA HIGH.