Air hoar frost on plants at roadside, Clay Hills
Introduction
The photograph on this page of Air hoar frost on plants at roadside, Clay Hills by John Goldsmith as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
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Image: © John Goldsmith Taken: 10 Jan 2009
According to the definition I read hoar frost forms when clear skies result in objects falling to a temperature lower than the air, and water vapour deposits as ice crystals on the plants etc. Yet on the night in question there was quite a thick fog. Any meteorologists out there who can explain?
