Why do I ask this… A bunch of visitors of my website that live in the same village as I are informing very often times that rainfall displayed on my site is way lower than their manual raincollector.
Not even sure how you could measure how much is lost the stronger the wind is
But like Looney2ns says, there are many factors involved, but, if there are numerous
peoples reporting higher then there is something a miss, for one thing, they must
have the same wind speeds as you so would be loosing similar amounts, whats it like
when there is little wind?
How is your bucket mounted, is it in a sheltered spot, is it high up?
You see it is a slopy mountain side faced to dominant east winds that since the begining of this year went up several times to 100Km/h.
In these cases rain bucket looses quite a lot of the rain overflying it. To looney2ns, yes manual rainguages are similar to yours. At least mine, located in a wind protected area (same garden) and readings are quite different. I can unfortunately (for wireless reasons) install tha Davis station close to the manual gauge, further more UV & solar rads would be impaired.
I understand my suggestion may be weird but if not getting 100% accuracy, it would a least improve it. I will not here enter the wind factor impact discutions but they may be found as you know on the net and differences are quite impressive windwise.
So my suggestion of creating a rain ofset related to wind speed may not be so stupid and could be set after a few readings and making an average.
When winds at my location, are close to 60miles/h (100Km/h) readings go from simple to double, that is huge.
Ah, Davis, you are not the 1st person i have heard with a Davis under reporting rain, i believe Brian has
about 30% under reading, so it may not be a wind issue after all???