Orography is the average height of land, measured in
geopotential meters, over a certain domain. In geoscientific models, such as
general circulation models, orography defines the lower boundary (except where there is ocean, of course). Because orography is spatially averaged, for example the height of the
Himalaya mountains will depend on horizontal
resolution. The higher the horizontal resolution, the better the orography will follow the actual terrain.
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Related to, or caused by, physical geography (such as mountains or sloping terrain).
orographic /,ɔrou'græfik/ (oreographic) /,ɔriə'græfik/ (oreographical) /,ɔriə'græfikəl/ (orographical) /,ɔrou'græfikəl/
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