Isobars surface maps
A line connecting points of equal pressure is called an isobar. That means, that at every point along a given isobar, the values of pressure are the same.
isobar
A line on a weather map connecting places of equal barometric pressure. Referenced by: Contour line.
isochrone ...
Geostrophic Wind Horizontal wind in the upper atmosphere that moves parallel to isobars. Results from a balance between pressure gradient force and Coriolis force.
 See also: Surface, Information, Location, Environment, Feature
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