noun
- a line on a weather map connecting points of equal change in atmospheric pressure over a specified time period
Usage: meteorology; technical
Examples
- Meteorologists use isallabars to track pressure changes across a region.
- The isallobar pattern on the weather chart showed where pressure was rising most rapidly.
- An isallobar helps forecasters identify areas of atmospheric instability.
- The dense cluster of isallabars indicated a rapidly intensifying storm system.