isobar (meteorology) - Uses in News

A line on a weather map joining places of equal barometric pressure. Because of variations in barometric pressure with altitude, recordings from different elevations are corrected and adjusted to pressure at sea level. The closer the lines are together, the stronger the pressure gradient force, and therefore the stronger the winds.

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The word isobar derives from the two ancient Greek words, ισος (isos), meaning 'equal', and βαρος (baros), meaning 'weight'.

In meteorology, an isobar is a line of equal or constant pressure on a graph, plot, or map; The distribution of isobars is closely related to the magnitude and direction of the wind field, and can be used to predict future weather patterns.

Uses in News

An isobar is very commonly used in news weather reporting. The isobar is the line that usually makes a circle around a centrepoint.