STUART ONYECHE wrote:
Looking at a map, Oseborg looks like it is on an exposed island just
off the mainlands North Sea coast, whereas Oslo is pretty sheltered
on a fjord-like inlet, with mountains to it's west. I spose given the
right conditions Oslo get some strong lee-wave winds from the west,
or strong funnelled winds from the south but not at the moment it
seems.
Stu

"Richard Dixon" wrote in message
ups.com...

MCC wrote:

Don't know the actual wind speed in Shetland but a Bristow's Tiger
helicopter has been blown over at Scatsta airport.
http://news.bbc.co.uk/1/hi/scotland/...st/6102566.stm

Gusting to 101mph at Oseberg in Southern Norway. Slightly confusing
as relatively nearby, Oslo is only 40mph.

Anyone with local knowledge here?!

Richard

OK, I am assuming that the observations came from METAR reports from the
North Sea Rigs. Oseberg is a platform, a picture of which can be seen linked
to from Jon's reply in this thread. Gullfaks/Gullfax is also a platform. The
key thing about the METARS is that they are taken from the Helicopter
Landing Deck and are actual winds, not reduced to sea level. The deck
heights can be over 100m above sea level, in contrast to the 10m quoted on
such websites as Wunderground. The sheer bulk and height of these enormous
structures can also accelerate the free air winds at that height.

Incidentally check out the amusing advertisements on the Wunderground
webpage for Gullfax
http://www.wunderground.com/global/stations/WENGC.html


--
Stuart Brooks
Carluke
South Lanarkshire 223m amsl

webcams at
www.brooks22.plus.com/index.htm
INC new high res webcam

Stuart Brooks wrote:

OK, I am assuming that the observations came from METAR reports from the
North Sea Rigs. Oseberg is a platform, a picture of which can be seen linked
to from Jon's reply in this thread. Gullfaks/Gullfax is also a platform. The
key thing about the METARS is that they are taken from the Helicopter
Landing Deck and are actual winds, not reduced to sea level. The deck
heights can be over 100m above sea level, in contrast to the 10m quoted on
such websites as Wunderground. The sheer bulk and height of these enormous
structures can also accelerate the free air winds at that height.

Very useful - thanks for this. The 100m vs 10m measuring height is
going to have a significant impact even before considering the effect
that the structure is having on the wind field around it. Further
dangers of trying to interpret winds off the internet !!

Cheers
Richard