Frosty Webs And Weeds
Hanne Lore Koehler
Painting - Photography
Hoar frost is a common phenomenon that occurs during winters near our home by the Grand River in Canada. The rising river mist clings to all surfaces including weeds and spider webs. It encases the buds on branches in fantastic soft crystals creating new winter blooms with icy river steam as if it were trying to imprison them until spring.
Hoar frost refers to the white ice crystals, loosely deposited on the ground or exposed objects, that form on cold clear nights when heat is lost into the open sky causing objects to become colder than the surrounding air. A related effect is flood frost or frost pocket which occurs when air cooled and travels downhill to form pockets of very cold air in depressions, valleys, and hollows. Hoar frost can form in these areas even when the air temperature a few feet above ground is well above freezing. Nonetheless the frost itself will be at or below the freezing temperature of water.
February 8th, 2013
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