Azores High

Azores High

The Azores High, also known as the Bermuda High in the United States, is a large subtropical semi-permanent centre of high atmospheric pressure found near the Azores in the Atlantic Ocean, at the Horse latitudes. It forms one pole of the North Atlantic oscillation, the other being the Icelandic Low. The system influences the weather and climatic patterns of vast areas of North Africa and Europe. The aridity of the Sahara Desert and Mediterranean Basin is due to the subsidence of air in the system.

In summer, the central pressure lies around 1024 mbar (hPa), and moves north towards the Iberian Peninsula, causing ridging across France, northern Germany and the southeastern United Kingdom. This brings hot and dry weather to these areas. In years that the Azores High is well developed, it extends westward toward Bermuda, and begins to influence weather in the eastern United States. While it affects conditions in the western Atlantic, the Azores High can also be called the Bermuda High. In winter, the High moves to the south of the Azores, and fluctuations in pressure result in more variable weather.

This high pressure block exhibits anticyclonic nature, circulating the air clockwise. Due to this direction of movement, African eastern waves are impelled along the southern periphery of the Azores High away from coastal West Africa towards North America and the Caribbean, sometimes triggering tropical cyclogenesis, especially during the hurricane season.

ee also

*Hadley cell
*North American High
*Siberian High
*South Atlantic High

References


#cite web|url=http://www.weatheronline.co.uk/feature/aa030803.htm|title=The Azores High|accessdate=2006-11-19|work=WeatherOnline Weather facts
#cite web|url=http://amsglossary.allenpress.com/glossary/search?id=azores-high1|title=Azores high|accessdate=2006-11-19|work=Glossary of Meteorology|publisher=American Meteorological Society
#cite web|url=http://amsglossary.allenpress.com/glossary/search?id=bermuda-high1|title=Bermuda high|accessdate=2006-11-19|work=Glossary of Meteorology|publisher=American Meteorological Society

Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • 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

  • Azores high — Meteorol. a subtropical high centered near the Azores …   Useful english dictionary

  • Azores — This article is about the archipelago. For the area of high pressure, see Azores High. Coordinates: 37°44′28″N 25°40′32″W / 37.74111°N 25.67556°W …   Wikipedia

  • High pressure area — A high pressure area (also called a high or high pressure) is a region where the atmospheric pressure is greater than surrounding areas. In the northern hemisphere high pressure areas move clockwise, whereas they move counter clockwise in the… …   Wikipedia

  • Azores — • An archipelago situated in that tract of the Atlantic Ocean which is known to mariners as the Sargasso Sea Catholic Encyclopedia. Kevin Knight. 2006. Azores     Azores      …   Catholic encyclopedia

  • Azores — Azorean, Azorian /euh zawr ee euhn, zohr /, adj., n. /euh zawrz , euh zohrz , ay zawrz, ay zohrz/, n. (used with a pl. v.) a group of islands in the N Atlantic, W of Portugal: politically part of Portugal. 336,100; 890 sq. mi. (2305 sq. km). * *… …   Universalium

  • Azores Air Zone Command — Infobox Military Unit unit name=Comando da Zona Aérea dos Açores (Azores Air Zone Command) caption= dates= 1956 country= flag|Portugal branch= Air Force type= role= size= command structure=Operational Command (COFA) garrison=Air Base No. 4… …   Wikipedia

  • High Frequency Global Communications System — The High Frequency Global Communications System (HF GCS) is a network of single sideband shortwave transmitters of the United States Air Force which is used to communicate with aircraft in flight, ground stations and some United States Navy… …   Wikipedia

  • North American High — The North American High (also Canadian High/Anticyclone, sometimes in Europe Greenland High/Anticyclone) is an impermanent high pressure area or anticyclone created by anticyclogenesis (anticyclone + the Greek word genesis, meaning birth, origin… …   Wikipedia

  • North Pacific High — The North Pacific High is a semi permanent, subtropical anticyclone located in the north east of the Pacific Ocean north east of Hawaii. It is strongest during the northern hemisphere summer, and shifts towards the equator during the winter when… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”