subaerial

[ suhb-air-ee-uh l, -ey-eer-ee-uh l ]

/ sʌbˈɛər i əl, -eɪˈɪər i əl /

located or occurring on the surface of the earth.

Origin of subaerial

First recorded in 1825–35; sub- + aerial

sub·aer·i·al·ly, adverb

He entirely agreed with the doctrine of the subaerial degradation of the land and the erosion of valleys by running water.

Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 |Various
Some kaolins appear to have been formed by weathering and others by subaerial action.

The Natural History of Clay |Alfred B. Searle
The Atlantic plain as a whole thus has three principal divisions: a submerged portion, a marsh portion, and a subaerial portion.

North America |Israel C. Russell
Since the goal of all material transported by running water is the sea, subaerial erosion means degradation of the surface.

The Geography of the Region about Devils Lake and the Dalles of the Wisconsin |Rollin D. Salisbury