isobaric divergence

isobaric divergence

[¦i·sə¦bär·ik də′vər·jəns]
(meteorology)
The horizontal divergence in a constant-pressure surface; expressed in a system of coordinates with pressure as an independent variable.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.