frontogenetical en · ADJ
Etymology
From frontogenetic + -al, ultimately fronto- + genetic + -al.
Meanings
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(not-comparable) Synonym of frontogenetic.
Therefore if Q and Vp0 are in the same direction, the frontogenetical function is positive and there is a thermally direct circulation, and vice versa (Hoskins and Pedder, 1980).
1986, Peter S. Ray, Mesoscale Meteorology and Forecasting, page 186: