Story: Ecoregions

Hoar frost (3rd of 3)

Hoar frost

This hoar frost on the Manorburn dam in Central Otago is caused by freezing fog. If the air temperature of a fog is below 0° C then the tiny water droplets remain in a liquid form. But if they come into contact with objects such as trees and leaves they freeze, covering surfaces with rime – known as a hoar frost.

Using this item

Otago Daily Times
Reference: 28 June 2006, p. 17
Photograph by Gerard O'Brien

Permission of the Otago Daily Times must be obtained before any re-use of this image.

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How to cite this page:

Matt McGlone, 'Ecoregions - Central Otago', Te Ara - the Encyclopedia of New Zealand, (accessed 2 June 2023)

Story by Matt McGlone, published 24 Sep 2007