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nl passaat(winden)   bestendige winden van het planetaire windsysteem aan beide kanten van de equator, treden op het noordelijk halfrond op als noordoostpassaat, op het zuidelijk halfrond als zuidoostpassaat. Passaatwinden ontstaan door het verschil in luchtdruk tussen subtropische hogedrukgebieden en de strook met lagedruk aan de equator en bereiken een windkracht tussen 4 en 5. Zij bereiken een hoogte van 2 km en vormen op de overgang tot de de daarbovenliggende luchtmassa's de zogenaamde passaatinversie.
de Passat(winde) beständige Winde (globale Bodenwinde) des planetarischen Windsystems beiderseits des Äquators, treten auf der Nordbreite als Nordostpassat, auf der Südbreite als Südostpassat auf. Passatwinde entstehen durch das Druckgefälle zwischen subtropischen Hochdruckzonen und der Tiefdruckrinne des Äquators und erreichen Windstärken zwischen 4 und 5. Sie reichen in der Höhe bis zu 2 km und bilden am Übergang zu den darüberliegenden Luftmassen die sogenannte Passatinversion.
en trade winds a pattern of winds that occur around the equatorial region. The winds prevail in the tropics, where they blow from the high pressure area in the horse latitudes towards the low pressure area around the equator. They blow predominantly from the northeast (northeast trades) in the northern hemisphere and from the southeast in the southern hemisphere (southeast trades).
The name derives from 'trade', meaning 'path' or 'track,' and thus the phrase 'the wind blows trade,' that is to say, on track.
fr vents alizés  
es alisios  
it alisei Venti costanti dominanti nell'Oceano Atlantico e la parte orientale dell'Oceano Pacifico. Spirano da Nord-Est nell'emisfero boreale e da Sud-Est nell'emisfero australe. Si generano normalmente per l'elevato innalzamento dell'aria all'Equatore (dovuto al forte riscaldamento) che richiama aria in superficie dalle zone polari, generando un moto da Nord / Sud verso l'Equatore. Per effetto della rotazione terrestere si genera uno spostamento della direzione verso Est.
dk passat      
se passad      
en    
 

In the zone between about 30°N and 30°S, the surface air flows toward the equator and the flow aloft is poleward. A low-pressure area of calm, light variable winds near the equator is known to mariners as the doldrums. Around 30°N and S, the poleward flowing air begins to descend toward the surface in subtropical high-pressure belts. The sinking air is relatively dry because its moisture has already been released near the Equator above the tropical rain forests. Near the center of this high-pressure zone of descending air, called the Horse Latitudes, the winds at the surface are weak and variable. The name for this area is believed to have been given by colonial sailors, who, becalmed sometimes at these latitudes while crossing the oceans with horses as cargo, were forced to throw some overboard to conserve water.
The surface air that flows from these subtropical high-pressure belts toward the Equator is deflected toward the west in both hemispheres by the Coriolis effect. Because winds are named for the direction from which the wind is blowing, these winds are called the northeast trade winds in the Northern Hemisphere and the southeast trade winds in the Southern Hemisphere. The trade winds meet at the doldrums. Surface winds known as westerlies flow from the Horse Latitudes toward the poles. The westerlies meet easterlies from the polar highs at about 50-60° N and S.