isallobar

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English

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Etymology

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From iso- +‎ allo- +‎ bar.

Noun

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isallobar (plural isallobars)

  1. (meteorology) A line joining points of equal pressure change during a specific time interval, especially over three hours.
    • 1965, L. V. Kool', “The pressure field of the Atlantic trade-wind belt and its changes with height”, in Oceanology[1], volume 5, numbers 4-6, page 35:
      Seasonal variations of atmospheric pressure are illustrated by the isallobaric chart [] which gives the differences between mean pressure in July–August, and in January–February. The position of the isallobars on this chart is largely indicative of the role of monsoonal factors []
    • 1977, Edward Linacre, John E. Hobbs, Ann McGrath, The Australian climatic environment, page 153:
      Successive values of pressure provide figures for the barometric tendency, permitting the plotting of isallobars [] This is called tendency analysis.
    • 1977, Blair & Ketchum's Country Journal, volume 4, page 27:
      If your barometer has dropped 0.05 of an inch in the last three hours, you are on the -0.05 isallobar.

Derived terms

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Anagrams

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