- subtropical high
Meteorol.one of several highs, as the Azores and Pacific highs, that prevail over the oceans at latitudes of about 30 degrees N and S. Also called subtropical anticyclone. Cf. high (def. 41).
* * *one of several regions of semipermanent high atmospheric pressure located over the oceans between 20° and 40° of latitude in both the Northern and Southern hemispheres of the Earth. These highs are associated with the subsidence of the Hadley cell and move several degrees of latitude toward the poles in the summer. The circulation around the highs is clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere. In both hemispheres, subsidence is greater on the eastern sides of the highs. The subsiding air warms by compression and, coupled with cooling of the lowest layers overlying the cold ocean currents normally found off the west coasts of the continents, forms a pronounced temperature inversion (warm air over cold), called the trade-wind (trade wind) inversion. The inversion acts as a barrier to vertical convection and is largely responsible for the aridity and high frequency of fog found along the west coasts of the subtropical continents, especially in summer.
* * *
Look at other dictionaries:
subtropical high — Meteorol. one of several highs, as the Azores and Pacific highs, that prevail over the oceans at latitudes of about 30 degrees N and S. Also called subtropical anticyclone. Cf. high (def. 41) … Useful english dictionary
Subtropical cyclone — Subtropical Storm Andrea in 2007 A subtropical cyclone is a weather system that has some characteristics of a tropical and an extratropical cyclone. As early as the 1950s, meteorologists were unclear whether they should be characterized as… … Wikipedia
Subtropical Storm Andrea (2007) — Infobox Hurricane Name=Subtropical Storm Andrea Type=Subtropical storm Year=2007 Basin=Atl Image location=Subtropical Storm Andrea (2007).jpg Formed=May 9, 2007 Dissipated=May 11, 2007 1 min winds=50 Pressure=1001 Da Inflated= Fatalities=6… … Wikipedia
Subtropical Storm One (1982) — Infobox Hurricane Name=Subtropical Storm One Type=Subtropical storm Year=1982 Basin=Atl Image location=Subtropical Storm 1 (1982).jpg Formed=June 18, 1982 Dissipated=June 20, 1982 1 min winds=60 Pressure=984 Da Inflated=0 Fatalities=3 direct… … Wikipedia
Subtropical ridge — The subtropical ridge is a large belt of high pressure situated around 30°N in the Northern Hemisphere and 30°S in the Southern Hemisphere. It is characterized by mostly calm winds, which acts to reduce air quality under its axis by causing fog… … Wikipedia
Subtropical Storm Nicole (2004) — Infobox Hurricane Name=Subtropical Storm Nicole Type=Subtropical storm Year=2004 Basin=Atl Image location=STS Nicole 10 oct 2004 1530Z.jpg Formed=October 10, 2004 Dissipated=October 11, 2004 1 min winds=45 Pressure=986 Da Inflated=… … Wikipedia
High Point, North Carolina — For other places named High Point, see High Point (disambiguation). High Point City City of High Point … Wikipedia
Azores high — Meteorol. a subtropical high centered near the Azores. * * * ▪ meteorology large, persistent, atmospheric high pressure centre that develops over the subtropical region of the North Atlantic Ocean. It is a subtropical high pressure cell… … Universalium
Bermuda high — Meteorol. a subtropical high centered near Bermuda. * * * … Universalium
Azores high — Meteorol. a subtropical high centered near the Azores … Useful english dictionary