Next message: Renee Mattie: "Re: Silicon Sea, Leg 11 question"
On 6/17/06, Bill <> wrote:
>
> Tracking (just barely) so far. Given the mass of stone etc extending up
> 200
> to 400 meters and predominant wind coming off the land, what happens to
> the
> tops of 430 meter buildings in your scenario?. BTW, Franks height of eye
> was closer to 4 meters.
Bill, to calculate the dip for 4m just multiply the values for 10m by 2/3
corresponding approx. to the square root of 4/10. Please note that the dip
provided is related to a true horizon (at sea level) and not to an
artificial horizon of a shoreline. It wasn't my intention to calculate the
observed situation. I just wanted to give an idea on the effects of a strong
inversion (before ducting starts). Once ducting starts things become even
"worse". The following Web pages from Andy Young may give an idea on this
http://mintaka.sdsu.edu/GF/mirages/mirintro.html#sup-mir
and here his beautiful simulations
http://mintaka.sdsu.edu/GF/explain/simulations/ducting/duct_intro.html
or the link he provides on his page to those real observations
http://virtual.finland.fi/netcomm/news/showarticle.asp?intNWSAID=25722
Marcel
