Nodules on CT scan (3 replies): I had a CT scan ran twice on my lungs. It shows multipl... [more]. Ground glass opacities. Hi, Just got the CT scan result back. A 7mmx4mm gro... [more]. Continue discussion. This discussion is closed.
Isobars are lines of constant or equal pressure on a weather map. They can be used to find areas of low or high pressure over a broad area (like the U.S.), and they can tell us how intense the system may be.
Synoptic Charts. The main weather element shown on a synoptic chart is air pressure. Isobar lines, which join up areas of equal air pressure, are drawn on these maps. The pattern these lines make show areas of low pressure or high pressure.