aridity coefficient

aridity coefficient

[ə′rid·əd·ē ‚kō·ə′fish·ənt]
(climatology)
A function of precipitation and temperature designed by W. Gorczynski to represent the relative lack of effective moisture (the aridity) of a place.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.