[BC] Thermometer

[Mike McCarthy]

  I believe the termerature sensor is 6ft. AGL and placed in the center 
of of the enclosure.  The white box enclosure used by the NWS is a 
specifically design white painted louvered WOOD box approximately 12" 
square by 18" tall. The box can be in in an open area.  In fact, the 
standard as I recall is for the box to be placed in an open and unshaded 
location.

They use wood as the enclosure material as it has little thermal gain or 
losses and no solar gain or loss properties. Properties which aluminum 
and other metals and plastics do have and influence the temperature reading.

MM

On 11/7/2010 5:51 PM, Glen Kippel wrote:
>
> IIRC, the standard calls for the thermometer should be mounted 4 feet above ground level in a shaded, well-ventilated area.  That's why weather stations traditionally had those little white louvered boxes to house their thermometers.
>
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