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Low pressure, Two or three (possibly four) non-tropical areas of low pressure with central low pressure over the North Atlantic below 920 hPa have been reported, with a further unverified instance during the Night of the Big Wind (see above), these represent globally the lowest non-tropical large-scale synoptic values.
The Azores High also known as North Atlantic (Subtropical) High/Anticyclone or the Bermuda-Azores High, is a large subtropical semi-permanent centre of high atmospheric pressure typically found south of 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 North Atlantic Oscillation (NAO) is ... of surface pressure. [4] ... relationships to seasonal and sub-seasonal climate variability over Europe, North America and ...
2013–2014 Atlantic winter storms in Europe: 17 December 2013–20 February 2014: 927 hPa (27.4 inHg) Bernd (Emily) [158] – 17–21 December 2013. 941 hPa (27.8 inHg). [159] An area of low pressure from the Atlantic brought wind gusts to the west of Ireland of 133 km/h (83 mph) causing power outages to 22,000 homes, and widespread disruption.
AMOC in relation to the global thermohaline circulation . The Atlantic meridional overturning circulation (AMOC) is the main current system in the Atlantic Ocean [1]: 2238 and is also part of the global thermohaline circulation, which connects the world's oceans with a single "conveyor belt" of continuous water exchange. [18]
The term originally derives from the early fourteenth century sense of trade (in late Middle English) still often meaning "path" or "track". [2] The Portuguese recognized the importance of the trade winds (then the volta do mar, meaning in Portuguese "turn of the sea" but also "return from the sea") in navigation in both the north and south Atlantic Ocean as early as the 15th century. [3]
It descends, creating a cold, dry high-pressure area. At the polar surface level, the mass of air is driven away from the pole toward the 60th parallel, replacing the air that rose there, and the polar circulation cell is complete. As the air at the surface moves toward the equator, it deviates westwards, again as a result of the Coriolis ...
[14] [15] High-pressure systems are alternatively referred to as anticyclones. On weather maps, high-pressure centers are associated with the letter H in English, [16] or A in Spanish, [17] because alta is the Spanish word for high, within the isobar with the highest pressure value. On constant pressure upper level charts, it is located within ...