Topic: Tripod mount distance above roof line?

[blackjack52]

Thanks SLO. The factors are proportional, at least very close, and the VWS db has the data needed.  The bucket tip factor may not need to be so precise, as only a slight wind/rainrate compensation would mean an improvement compared to no compensation.  I'll have to think about this one.

[d_l]

Wind shield designs: http://www.rap.ucar.edu/projects/marshall/Wind_Shields.html  There maybe an emphasis on catching proper snow fall amounts and avoiding drift and wind scour effects with these even more than fixing rain fall under catchment.

[Cienega32]

Some interesting links to wind shields - thanks. It seems like their goal is to reduce the effect of updrafting, which is a good thing, but I wonder how much it helps with those "horizontal rainstorms" when the rain comes in at a 30 degree angle or less!

A lot of them don't seem to be overly complicated in design/manufacture but they all give the gauge site a "look".

[SLOweather]

Thanks SLO. The factors are proportional, at least very close, and the VWS db has the data needed.  The bucket tip factor may not need to be so precise, as only a slight wind/rainrate compensation would mean an improvement compared to no compensation.  I'll have to think about this one.

I've thought about it a little more. To be worth doing, the wind speed would have to be measured at or very near the rain gauge. For me to try to compensate using my anemometer, which is 100' away and 20' higher, would probably be worse than no compensation at all.

Data from a Davis VP2 with the anemometer mounted right on the ISS might be useful.

[blackjack52]

wind speed would have to be measured at or very near the rain gauge.
I agree.  My anemom and bucket are co-located.  I'll tinker w/ a script, but it'll be after next month to see a comparison....squals man....squals.