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Ridge line extending to the left of the high pressure center (H). In meteorology a ridge or barometric ridge is an elongated area of relatively high atmospheric pressure compared to the surrounding environment, without being a closed circulation. [1] It is associated with an area of maximum anticyclonic curvature of wind flow.
The subtropical ridge is a warm core high-pressure system, meaning it strengthens with height. [23] Many of the world's deserts are caused by these climatological high-pressure systems. [24] Some climatological high-pressure areas acquire regionally based names.
The Ridiculously Resilient Ridge was characterized by a broad region of anomalously positive geopotential height on monthly to annual timescales. This persistent high pressure system acted to "block" the prevailing mid-latitude westerlies, shifting the storm track northward and suppressing extratropical cyclone (winter storm) activity along the West Coast of the United States.
This creates a ridge of high pressure near the 30th parallel in both hemispheres. At the surface level, the sinking air diverges again with some returning to the equator, creating the Hadley cell [ 6 ] which during summer is reinforced by other climatological mechanisms such as the Rodwell–Hoskins mechanism .
A powerful high-pressure ridge will bring unusually hot temperatures to the Golden State by the middle of this week, before spreading into the Pacific Northwest.
The National Weather Service is forecasting a heat wave throughout much of the Southwest and parts of California from Tuesday through Thursday as a ridge of high pressure centers over the region.
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.
A high pressure ridge is forming, depriving the region of clouds, cooling winds, showers or thunderstorms that might otherwise offset the intense solar radiation, Bann said.