polytropic atmosphere[¦päl·i¦träp·ik ′at·mə‚sfir]
A model atmosphere in hydrostatic equilibrium with a constant nonzero lapse rate.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
an idealized atmosphere in which the temperature varies linearly with altitude with a nonzero constant vertical gradient.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.