Anemometer Height Compensation, yes or no?

[coveredinoil]

I have recently re-read the WeatherCat manual and spotted something I didn't take any notice of last time (3yrs ago perhaps), this section:

Anemometer Height Compensation
For anemometer height compensation, only the average multiplier should be adjusted.
Height compensation values are available at the Met-Office's web site; see the 'Observer's
Handbook' (chapter 5, section 5.2.2) at:
http://www.metoffice.gov.uk/archive/observers-handbook-4th-edition-reprint
The height compensation multipliers for anemometers located over land are copied below
for heights up to 30m.
Anemometer height of:
1m=1.37, 2m=1.28, 3m=1.22, 4m=1.18, 5m=1.14, 10m=1.00, 15m=0.93, 20m=0.87,
25m=0.83, 30m=0.81

Given mine is at 3m this suggests a 1.22 multiplier is applied.
Do others on here make this adjustment?
Presumably this would only change future data stored and not historic data?
I want my data accurate (without being silly about it) but do a lot of year on year comparisons which could be a problem if I change and it's only future data.
Thought welcome.

[Blicj11]

Even though I no longer live in the UK and do not have to (1) obey the Met handbook, or (2) pay for an annual television license, I use the adjustment, trusting the manual that it is a more accurate measurement given my anemometer is not mounted at the standard recommended height.
 

[elagache]

Dear coveredinoil, Blick, and WeatherCat perfectionists,

I have recently re-read the WeatherCat manual and spotted something I didn't take any notice of last time (3yrs ago perhaps), this section:

Anemometer Height Compensation
. . . .

Golly, that was one feature of WeatherCat that I wasn't aware of!  Thanks for pointing it out to us.

Do others on here make this adjustment?
Presumably this would only change future data stored and not historic data?
I want my data accurate (without being silly about it) but do a lot of year on year comparisons which could be a problem if I change and it's only future data.
Thought welcome.

I don't know if changing the multiplier would change your past data.  That might be reason enough to leave it alone.  The one other factor to consider is whether or not your anemometer would collect good data otherwise.  In my case there are too many obstructions to consider the data to be particularly reliable anyway.  In my case, I keep an eye on the wind speed and direction mostly to be aware if it might damage our property or belongs.

Thanks again for sharing,

Edouard