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单词 meridional circulation
释义
meridional circulation

Geology and Earth Sciences
  • A movement of air or water in a direction at right angles to lines of latitude, i.e. parallel to the meridians (lines of longitude). See also hadley cell; zonal flow.


Geography
  • In meteorology, air flowing longitudinally, across the parallels of latitude. Meridional flow occurs in atmospheric cells, resulting in part from longitudinal temperature variations. See Song et al. (2008) J. Climate 21, 19. The meridional temperature gradient is the change in temperature along a meridian. Von Storch (2008) J. Climate 21, 18 finds that an increase in the meridional gradient of sea surface temperatures strengthens the atmospheric circulation.


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