Barotropic cyclones are those where isotherms are parallel to height lines on a map at a constant pressure surface, or at the surface, parallel to isobars. Tropical cyclones and cutoff cyclones (occluded and formerly occluded cyclones) both qualify as barotropic, though due to differences in their vertical wind structure and temperature profiles, cutoffs are referred to as "barotropically cold" and tropical cyclones are call "barotropically warm". ^[1] An isotherm is a line of equal or constant temperature on a graph, plot, or map; an isopleth of temperature. ... Isobar - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... This article is about weather phenomena. ... A barotropic atmosphere is one in which the density depends only on the pressure, so that isobaric surfaces are also surfaces of constant density. ...

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