Most sensors are powered by a small solar panel (and batteries) on top of our Stevenson screen. This particular Stevenson screen is a renovated old hardwooden cage, built around 1980 by the Royal Dutch Meteorological Institute (KNMI) for placement in the Thialf ice arena in Heerenveen, the Netherlands. Sanne and I repainted it black inside, white outside according to WMO spec, renewed the rusty old screws and bolts, fixed everything that was broken or damaged, and now it is operational as new again. We've placed the Stevenson as remote as possible in our meadows, the closest proper tree is now about 24m away from the anemo-meter, at the East of it, but recently has been cut in half by our neighbors, so it no longer interferes with wind-measurements. Some smaller bushes and fruit-trees are at about 10m distance from the sensors, but they have no negative influence on intended outdoor field-measurements.
The Stevenson cage reaches to 2.2m high above ground. The ground where it is located is about the lowest laying area of our estate, at 4 meters below NAP. This makes the sensor-cage, the insides of the Stevenson itself, positioned at around -2m sea-level. At the side of the Stevenson we've mounted a fiberglass mast of 6m height. Its bottom is lifted about 10cm above ground, and the sensorsuite mounted on top of the mast are therefore at about 6.2m above ground-level, which would be at 2.2m above sea-level. This of course is of interest for correct pressure and wind measurement callibrations.

In operation since: 2016/04/03 (2939 days)