Wind Maps for California [RE-wrenches]

[Bob-O Schultze, Electron Connection]

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David,
True enough, but they ARE used by the gooberment folks who make wind 
maps. That's my point.
Bob-O

>Just so that you all know, the weather station sites you may see 
>around you on very
>short towers 3-10 meters are NOT used by the wind energy industry. 
>If used, they are
>very carefully looked at for exposure to prevailing winds. NRG's #1 
>selling wind energy
>measurement system is 50 m (165') tall. These maps use higher tower 
>data sources
>are are checked against all the available wind energy data.
>
>There is a big difference in general weather measurement vs wind energy
>measurement. Our company ONLY makes wind energy measurement equipment which
>is designed specifically for accuracy at high wind speeds, 
>reliability and reasonable
>cost.
>
>Regards,
>
>David  Blittersdorf
>
>On 18 Dec 2002 at 8:41, Bob-O Schultze, Electron Connection wrote:
>
>>  Amigos,
>>  IMO, the whole program of taking wind data readings from a 10m tower
>>  and extrapolating it for higher (but not actually recorded) tower
>>  heights is hopelessly flawed.
>>  As David points out, there is still some turbulence at 10m even where
>>  the measurement site is ideally situated. In reality, the data sites
>>  are rarely so situated. I can show y'all pictures of all five of the
>>  wind data sites here in Siskiyou county. One, maybe two give
>>  semi-accurate data. the others are in the trees, right next to the
>>  freeway where turbulence from trucks affect them, on and on. If your
>>  10m data is flawed, then any mathematical extrapolation from that
>>  data is bogus. Garbage in, garbage out.
>>  Bob-O
>>
>>  >Yes, the wind increases with height above the ground. These are
>>  >estimates of the
>>  >windspeeds based on the assumed wind shear that is expected. I
>>  >consider 30m to be
>>  >the minimum height for good wind energy. Wind turbines mounted at
>>  >10m generally do
>>  >not work and if they do have very low energy production and much
>>  >shorter life due to
>  > >turbulence.

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