tropopause Meteorol.
(ˈtrɒpə-, ˈtrəʊpəʊpɔːz)
[f. troposphere + pause n.]
The upper limit of the troposphere, separating it from the stratosphere, at which the lapse rate falls to zero.
| 1919 Geophysical Mem. (Meteorol. Office) No. 13. 59 The terms ‘tropopause’ and ‘lapse-limit’ have been suggested to denote the plane of cessation of the vertical temperature gradient. 1922 Encycl. Brit. XXXI. 930 In a cyclone the tropopause is low, in an anticyclone high. 1947, 1971 [see jet stream a]. 1982 New Scientist 17 June 788/1 Venus's tropopause..is much higher than that of the Earth,..some 70 kilometres above the Venusian surface. |