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doldrums |
Also found in: Dictionary/thesaurus, Acronyms, Wikipedia, Hutchinson | 0.03 sec. |
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doldrums (dŏl`drəmz) or equatorial belt of calms, area around the earth centered slightly north of the equator between the two belts of trade winds. The large amount of solar radiation that arrives at the earth in this area causes intense heating of the land and ocean. This heating results in the rising of warm, moist air; low air pressure; cloudiness; high humidity; light, variable winds; and various forms of severe weather, such as thunderstorms and squalls. Hurricanes originate in this region. The doldrums are also noted for calms, periods when the winds disappear, trapping sailing vessels for days or weeks. doldrums the a. a belt of light winds or calms along the equator b. the weather conditions experienced in this belt, formerly a hazard to sailing vessels |
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The work found that the aerosols reached as far south as the Intertropical Convergence Zone, close to the equator, where trade winds swirl together and shoot hot air to high altitudes. Lamb suspects that the drought/SST pattern, which shifts the region of highest sea surface temperatures 300 km to the south, similarly shifts the so-called intertropical convergence zone (ITCZ), where wind fields from the two hemispheres meet. |
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