I,ve been out sailing all day at Fraisthorpe ! I could not answer Danid any better than Tillson did, whose reply about our erratic wind in UK was ( IMHO) right.
However, to add my thoughts.
Yes the wind in Uk is erratic , with reference to the subject.ie) its too erratic to build our energy production , even too a small degree,on it.
But just to explain further. On my return today first thing neighbour said was " bet you,ve had a great day, its been windy"...To the casual observer he was right.
Sort of.
On arrival at beach around 9.30 this morning, in lee of turbines,there was a perfect 20 to 25 mph wind. For me that represent a 5.7 square metre sail, which I started to rig. By time it was rigged wind had dropped to 15 mph, requiring a 7 metre sail and a,larger board. Had 20 mins on this...then wind dropped to sub 10 mph...20 minutes later...wind back to 25 mph.( Back on 5.7) This was pattern all day and is typical of a days sailing in Uk..By 4pm I,d swapped and changed at least 3 times but managed 38 miles distance and 32 mph Vmax ( so not a bad day) As usual ( for UK) the wind varied with the amount of cloud cover, lots of cloud ..almost zero wind, nice and bright...plenty. Basically we had in any hour 20 mins sub 10, 20 mins 25 and 20 mins 15..Erratic.
This by the way represents one of the 40 to 50 sailable days, or days when turbines are productive. To the casual observer a windy day, if dependant on wind for power, either electricity or on a board , its slightly different.
In comparison a days sailing in Leucate, Canaries, Tarifa would generally involve no sail changes and a relatively steady wind. (My PB for distance/ speed in Leucate is 68 miles, Vmax 42.6 mph( from GPS) in wind that is not erratic. ( I use a 4.2 metre sail generally in Leucate, again just to give an insight into wind in other places. Its not unknown for windsurfers to get 200 days sailing in a single year in Leucate, you would do well to get 45 in Fraisthorpe.( planing sailing)
My point being windsurfers need almost exactly same wind speed as Turbines do.
No matter how you assess it Fraisthorpe should not have a wind farm. Its crazy.