Winter’s P‘rime’ Time PDF Print E-mail
Monday, 10 February 2014 12:36

After heavy fog rolled into the area over the weekend, rime set up on every surface the fog touched as these scenes from Liberal and northeast Seward County show. L&T photos by Earl Watt and Larry Phillips

What is rime?

 

• Encylopedia Britannica

 

Rime is white, opaque, granular deposits of ice crystals formed on objects that are at a temperature below the freezing point.

Rime occurs when supercooled water droplets (at a temperature lower than 0° C [32° F]) in fog come in contact with a surface that is also at a temperature below freezing; the droplets are so small that they freeze almost immediately upon contact with the object.

Rime is common on windward upper slopes of mountains that are enveloped by supercooled clouds. These rime deposits take the form of long plumes of ice oriented into the direction of the wind and are called “frozen fog deposits,” or “frost feathers.”

Rime is composed of small ice particles with air pockets between them; this structure causes its typical white appearance and granular structure. Because of the rapid freezing of each individual supercooled droplet, there is relatively poor cohesion between the neighbouring ice particles, and the deposits may easily be shattered or removed from objects they form on. Thus, rime is not normally a serious problem when it forms on the wings or other surfaces of aircraft.

 

 

 

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The High Plains Daily Leader and Southwest Daily Times are published Sunday through Friday and reaches homes throughout the Liberal, Kansas retail trade zone. The Leader & Times is the official newspaper of Seward County, USD No. 480, USD No. 483 and the cities of Liberal and Kismet.  The Leader & Times is a member of the Liberal Chamber of Commerce, the Kansas Press Association, the National Newspaper Association and the Associated Press.

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