Definition of isobar

Definitions

isobar

noun

(Weather) A line drawn on a map or chart connecting places of equal or constant pressure.

In meteorology, it most often refers to a line drawn through all points of equal atmospheric pressure along a given reference surface, such as a constant height surface (notably mean-sea-level on surface charts); the vertical plane of a synoptic cross section, or a map of the air unaffected by surface heating or cooling. The pattern of isobars has always been a main feature of surface chart analysis. Until recently it was standard procedure to draw isobars at 3-millibar intervals. However, the advent of constant pressure charts for upper-air analysis has brought about the use of 4-millibar intervals to simplify the conversion from surface isobars to 1,000-millibar contour lines.

(physics) either of two nuclides of different elements having the same mass number
1. thermodynamics. A set of points or conditions at constant pressure

Translations:

Italian: isobara (all)

Supplemental Details:Sponsor an extended definition for isobar for as little as $10 per month. Click here to contact us.

Browse the Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


Dictionary content provided from Wiktionary.org under the GNU Free Documentation License Allwords Copyright 1998-2013 All rights reserved.

Share this page:

More To Explore

Contact & About