ESS124
Prof. Jin-Yi Yu
•It is useful to examine horizontal pressure differences across space.
•Pressure maps depict isobars, lines of equal pressure.
•Through analysis of isobaric charts, pressure gradients are apparent.
•Steep (weak) pressure gradients are indicated by closely (widely) spaced isobars.
D:\IMAGES\CH07\FIG07_006.JPG
Isobar