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The westerlies, anti-trades, [2] or prevailing westerlies, are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude. They originate from the high-pressure areas in the horse latitudes (about 30 degrees) and trend towards the poles and steer extratropical cyclones in this general manner. [ 3 ]
The quasi-biennial oscillation (QBO) is a quasiperiodic oscillation of the equatorial zonal wind between easterlies and westerlies in the tropical stratosphere with a mean period of 28 to 29 months. The alternating wind regimes develop at the top of the lower stratosphere and propagate downwards at about 1 km (0.6 mi) per month until they are ...
The westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, [13] [14] especially in the southern hemisphere because of its vast oceanic expanse. The westerlies explain why coastal Western North America tends to be wet, especially from Northern Washington to Alaska, during the winter.
It exists only in an atmosphere with horizontal temperature gradients. [5] The ageostrophic wind component is the difference between actual and geostrophic wind, which is responsible for air "filling up" cyclones over time. [6] The gradient wind is similar to the geostrophic wind but also includes centrifugal force (or centripetal acceleration ...
A westerly wind burst is defined by Harrison and Vecchi (1997) as sustained winds of 25 km/h (16 mph) over a period of 5–20 days. [3] However, no concrete definition has been determined, with Tziperman and Yu (2007) defining them as having winds of 14 km/h (8.7 mph) and lasting "at least a few days".
It might seem like a simple question. But the science behind a blue sky isn't that easy. For starters, it involves something called the Rayleigh effect, or Rayleigh scattering. But that same ...
The Daytona 500 has NASCAR’s most unusual — and complicated — qualifying format. There are nine drivers — the most since 2015 — vying for those spots: Anthony Alfredo, Justin Allgaier ...
Henry Patten and Harri Heliovaara rallied from losing a contentious first set to win the Australian Open men's doubles title 6-7 (16), 7-6 (5), 6-3 over the Italian pairing of Simone Bolelli and ...