Figs. 33-38 show the arrangement of the isobars on these days.
Then, as they drew their isobars, the pattern for the northern hemisphere emerged.
The solid lines are called 'isobars' and they follow the course of places which have the same barometric pressure.
Note the differences in form between the isotherms and the isobars.
Describe the distribution of pressure as shown by the arrangement of the isobars.
The scale must, however, be laid perpendicularly to the isobars, as before.
The solid concentric oval lines are the isobars (Chapter XI).
To isobars, as well as to isotherms, Dr. Buchan has devoted considerable attention.
The lines of equal pressure or isobars generally curve and inclose what is known as a cyclonic centre, or depression or LOW.
Select the station (between two isobars on any weather map) at which you intend to make your observation.
isobar i·so·bar (ī'sə-bär')
Any of two or more kinds of atoms having the same atomic mass but different atomic numbers.
A line on a weather map connecting points of equal atmospheric pressure.
A line drawn on a weather map connecting places having the same atmospheric pressure. The distance between isobars indicates the barometric gradient (the degree of change in atmospheric pressure) across the region shown on the map. When the lines are close together, a strong pressure gradient is indicated, creating conditions for strong winds. When the lines are far apart, a weak pressure gradient is indicated and calm weather is forecast.