harmattan

/hahr'meuh tan"/, n.
(on the west coast of Africa) a dry, parching land breeze, charged with dust.
[1665-75; said to be < Twi haramata]

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wind
      hot, dry wind that blows from the northeast or east in the western Sahara and is strongest in late fall and winter (late November to mid-March). It usually carries large amounts of dust, which it transports hundreds of kilometres out over the Atlantic Ocean; the dust often interferes with aircraft operations and settles on the decks of ships.

      The harmattan is a trade wind strengthened by a low-pressure centre over the north coast of the Gulf of Guinea and a high-pressure centre located over northwestern Africa in winter and over the adjacent Atlantic Ocean during other seasons. In the summer it is undercut by the cooler winds of the southwest monsoon, blowing in from the ocean; this forces the harmattan to rise to an altitude of about 900 to 1,800 metres (about 3,000 to 6,000 feet). The interaction between the harmattan and the monsoon sometimes produces West African tornadoes.

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Universalium. 2010.

Look at other dictionaries:

  • harmattan — [ armatɑ̃ ] n. m. • 1765; mot d une langue africaine ♦ Géogr. Alizé continental qui souffle de l est sur le Sahara et l Afrique occidentale. « L harmattan soufflait. Le vent chaud avait séché le ciel et la terre » (Le Clézio). ● harmattan nom… …   Encyclopédie Universelle

  • Harmattan — (Липари,Италия) Категория отеля: Адрес: Località Monte Rosa, 98055 Липари, Италия …   Каталог отелей

  • Harmattan — Har*mat tan (h[aum]r*m[a^]t tan), n. [F. harmattan, prob. of Arabic origin.] A dry, hot wind, prevailing on the Atlantic coast of Africa, in December, January, and February, blowing from the interior or Sahara. It is usually accompanied by a haze …   The Collaborative International Dictionary of English

  • Harmattan — Harmattan, heißer Wind auf der Westküste von Afrika, weht periodisch 7–8 Tage lang …   Pierer's Universal-Lexikon

  • Harmattan — (Dunstzeit), ein trockner, Staub bringender Nord bis Ostwind an der Küste von Oberguinea, dessen Ursprung man früher in der Sahara suchte. Auf Grund neuerer Beobachtungen fand aber v. Danckelmann, daß der Staub nicht immer aus der Sahara zu… …   Meyers Großes Konversations-Lexikon

  • Harmattan — Harmattan, äußerst trockner, staubführender Wind Nordwestafrikas, der aus dem Innern nach der atlant. Küste hauptsächlich vom Dezember bis Februar weht …   Kleines Konversations-Lexikon

  • Harmattan — Harmattan, ein aus dem Innern Afrikas nach Norden wehender periodischer Wind von außerordentl. Trockenheit …   Herders Conversations-Lexikon

  • harmattan — [här΄mə tan′] n. [Sp harmatán < the native (Twi) name in W Africa] a dry, dusty wind that blows from the Sahara in N Africa toward the Atlantic, esp. from Nov. to March …   English World dictionary

  • Harmattan — Bruma de Harmattan rodeando la Mezquita Nacional de Abuya en Abuya, Nigeria. El Harmattan es un viento alisio de África Occidental frío, seco y polvoriento. Sopla al sur del Sáhara hacia el golfo de Guinea entre el fin de noviembre y mitad de… …   Wikipedia Español

  • Harmattan — The Harmattan is a dry and dusty West African trade wind. It blows south from Sahara into the Gulf of Guinea between the end of November and the middle of March (winter).cite encyclopedia |year= 2007|title =Harmattan |encyclopedia=Encyclopædia… …   Wikipedia

  • Harmattan — Pour les articles homonymes, voir Harmattan (homonymie). Harmattan sur l île de Boa Vista au Cap Vert L harmattan est un vent (alizé) chaud …   Wikipédia en Français

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