The term for a stationary mass of high-pressure air is gaining acceptance despite not being a scientific expression
Some forecasters attributed the recent warm weather to a “heat dome”. This sounds like a technical term, but the expression is not used in scientific circles and some question whether it should be used at all.
Loosely speaking, a heat dome occurs when a stationary mass of high-pressure air forms over a region. This has a doming effect, blocking more warm air from rising, which raises pressure and temperature further.
