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.
The winds are the result of thermal tides and buoyant upwellings from the dense lower atmosphere.