Temperature sensors keep Lambeau tundra just right
Temperatures are expected to be in the teens when the game starts at 7 p.m. Lambeau's underground heating system will keep the turf from freezing. Below the surface, a network of plastic pipes containing antifreeze, covered by a foot of sand, make the field of natural grass and artificial fibers playable.
The entire system is monitored by temperature sensors in the field. The Green Bay Press-Gazette (http://gbpg.net/Un2xVf ) says the grounds crew uses a central control system to make adjustments if necessary. The system is designed to keep the turf at 55 degrees when the temperature dips to zero.
Copyright 2013 by The Associated Press
This story is from ESPN.com's automated news wire. Wire index
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