I mounted my temperature/humidity sensor under the eve of my house.
I also built a radiation shield. I modeled mine after the one
shown under this link: http://www.wxqa.com/shields.html
has a page on radiation shields http://www.wxqa.com/shields.html
Even with the radiation shield, and keeping it out of the direct
sunlight, I am still seeing readings that are a couple of degrees
higher than surrounding stations at times. It did improve my readings
that were about the same as yours (6 degrees or higher).
Personally, I do not think a radiation shield will cure the problem
100% if it is explosed to direct sunlight, but I could be wrong.
One final thing you might consider, I have noticed that some of the
radiation shields offered by Davis also use a small fan (solar
powered I believe) to keep the radiation shield vented. If you have a
power outlet nearby, you could add a small DC fan.
I have considered adding a temperature offset to WUHU to correct
the problem. That would be fine except that would skew the other
readings such as dewpoint, windchill, that come from the unit. I made
add offsets for all these values if push comes to shove. Any ideas?
Let me know if I can help.
--- In email@example.com
, "david wynn"
> Hi all
> With my station I am continually recording temps that are around 6
> higher than the local met office that is less than a kilometre
> originally had the sensor up a mast around 3 metres from ground
> have since moved it down to around 1.5m off the ground and enclosed
> sensor within a plastic milk crate shrouded with 1 layer of 90%
> cloth but the daytime temps are consistently higher at around the
> Does anyone have any ideas short of dropping the whole thing off
> and relocating the sensor, mast and instruments into a less than
> location the will affect all the other sensors? Im using a 2310 in
> Any help or suggestions would be appreciated
> -----Original Message-----
> From: wuhu_software [mailto:wuhu_software@y...]
> Sent: Tuesday, 12 April 2005 2:33 PM
> To: firstname.lastname@example.org
> Subject: [wuhu_software_group] WUHU 1.0.12
> I had noticed that there was a race condition between the start up
> HeavyWeather and WUHU where erroneous data was uploaded to the
> This condition only occurred at boot time or when HeavyWeather was
> started but WUHU was not.
> The program now waits until the HeavyWeather data has settled before
> data is uploaded.
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