thermal tide

thermal tide

[′thər·məl ′tīd]
(meteorology)
A variation in atmospheric pressure due to the diurnal differential heating of the atmosphere by the sun; so-called in analogy to the conventional gravitational tide.
References in periodicals archive ?
As morning works its way westward around the planet, so does a wave of heat-expanded atmosphere, known as a thermal tide.
"We see a definite pattern related to the daily thermal tides of the atmosphere," said RAD Principal Investigator Don Hassler of the Southwest Research Institute's Boulder, Colo., branch.