The interior size of the Stevenson screen increases and decreases depending on the number of instruments that is to be installed inside. A single screen measures approximately 30.1in x 24in x 23.3in, and a double screen 30.1in x 41.3in x 23.3in.
Stevenson Screen Structure:
- It is a wooden box painted in white. White is a natural reflector, so it does not allow heat to penetrate inside the box.
- To ensure free air flow inside, the four sides of the box has doubled louver.
- There is an opening between the roof and the sides that allow free air circulation.
- The slightly tilted roof allows rain water to flow down.
- The Stevenson screen in the Southern hemisphere is always faced to the south to avoid direct sunlight.
- It is placed 1-2 m above the ground. This is the standard level for surface temperature observations.
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