Accuracy and Height: Wind, Temp, Humidity, and Rain

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I have a 5 and 1 and recently read a publication from the feds on Citizen’s Observation Weather Program. They recommend heights of 33’ for wind, 2’ for rain, and 5’ for the others (excluding pressure which is read indoors). Likewise, they recommend certain distances away from other various other objects such as concrete, asphalt shingles, and swimming pools.

What is the best height for a 5 and 1 since there will be always be compromises? Too low and wind is off, too high and temp is off, go in between and rain isn’t ideal. I know that 5’ wind is nowhere close to 33’ wind. Is height as big of an issue for the other readings?

Has anyone mapped a return line for accuracy vs. height for more than just wind? I’m looking for the all around best height that represents the best compromise since all sensors will be at the same height.

Ps. I have plenty of room and spacing so that is not a concern.
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LeeBo337

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Posted 2 weeks ago

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George D. Nincehelser

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Personally, I feel the best height is one that you can easily and safely maintain the unit.  For most people that's 5 or 6 feet above ground.  You'll get accurate readings for everything but wind.

When the Atlas goes on sale, it will have a detachable anemometer that you can extend up to 33 feet with an optional kit.  That will give you the best of both worlds.... maintainability and accuracy.
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LeeBo337

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Right. However, I can safely place it higher than most people but still, there’s a dilemma. I’d make a very rough uneducated guess that wind is about 30% accurate at 5’ relative to 33’. On the other hand, I’d also make a ballpark uneducated guess that temp and rain is 90% accurate at 10’ (rather than 5 and 2 respectively). However, does anyone know if temp, rain, and humidity readings are as elastic as wind when it comes to height? I suspect not but haven’t found any hard data. Rather, it all speaks to wind.


ps. Good to hear about the detachable anemometer.
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