ageostrophicadj.
/ˌeɪdʒiːəˈstrɒfɪk/, /ˌeɪdʒiːəˈstrəʊfɪk/, U.S. /ˌeɪˌdʒiəˈstrɑfɪk/ Meteorology.
Not geostrophic (geostrophic adj.); spec. designating the wind component which when added to a geostrophic wind gives the actual wind.
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the world > the earth > weather and the atmosphere > weather > wind > [adjective] > affected by curvature of earth or by Coriolis force
cyclostrophic1916
geostrophic1916
ageostrophic1948
1938 R. C. Sutcliffe in Q. Jrnl. Royal Meteorol. Soc. 64 502 If there is a general vertical motion in a region where the winds are quasi-geostrophic, then there is a non-geostrophic component directed along the horizontal gradient of temperature.]
1948 Jrnl. Inst. Navigation 1 54 Having minimised air position errors..it was possible..to make an assessment of the inherent errors of the technique i.e. those due to ageostrophic effects.
1963 Meteorol. Gloss. (Meteorol. Office) (ed. 4) 9 The ageostrophic wind is of fundamental importance in that it is necessarily associated with convergence or divergence and vertical motion in the atmosphere.
1979 Nature 20 Sept. 190/1 This equation is invalid at fast rotation rates where motions are highly ageostrophic.
2010 P. Markovski & Y. Richardson Mesoscale Meteorol. Midlatitudes i. 6/1 Mesoscale systems are often characterized by large wind accelerations and large ageostrophic motions.
This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021).
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adj.1948