Also found in: Dictionary, Thesaurus, Medical, Acronyms.
ground fog[′grau̇nd ‚fäg]
A fog that hides less than 0.6 of the sky and does not extend to the base of any clouds that may lie above it.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A shallow fog caused by radiation cooling the ground at night. It normally covers more than half the sky and is not part of the cloud base.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved