Re: Wind predictors at Berkeley?

From: Booker C. Bense (bbense@networking.stanford.edu-DeleteThis)
Date: Thu Aug 31 1995 - 08:23:08 PDT


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Date: Thu, 31 Aug 1995 08:23:08 -0700 (PDT)
From: "Booker C. Bense" <bbense@networking.stanford.edu-DeleteThis>
To: wind_talk@opus.hpl.hp.com-DeleteThis
Subject: Re: Wind predictors at Berkeley?
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On Wed, 30 Aug 1995 Gr8Jibe@aol.com-DeleteThis wrote:

> Booker,
>
> how do you find the COTW readings correlate with what's on the water, since
> the anemometer is on top of H's Lordships? And where on the water--inside,
> outside?
>

- It's maybe a touch on the high side, since it's so far off the ground,
but it correlates pretty strongly with the wind outside. The wind inside
can be nothing, blowing 90 deg opposite,..... launch from
H'Lordships.

- In general the whole problem of remote wind sensing is pretty difficult,
you have to gain some experience with how the sensor relates to the actual
wind. COTW is pretty good for relative measurements at a single site, but
pretty useless for absolute measurements between sites.

For example:

        If COTW reports in the 13-15 range at Coyote, I know I can sail
my 6.2 / 8'11" and be planing. If it says 13-15 at Berkeley, I grab my
long board and plan on some serious upwind motoring with the same 6.2 .
This is the reason alot Berkeley regulars have 9'+ course slalom boards.

- If I'm sailing in that area, I really prefer to sail at Pt. Isabell.
Unfortunately, the Berkeley reading only gives you what the wind is
outside. Often at Pt. Isabell the wind line is quite a ways upwind and
it's impossible to get out to the wind. The best wind in this area is
usually found outside of what's called Albany cove. This is basically
north of the Berkeley Marina and is a bit of an upwind sail from any
launch spot.

- Booker C. Bense : bbense@networking.stanford.edu-DeleteThis



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