3 Need for metocean information Design basis for marine structures – extreme values and fatigue −Floating and fixed structures −Pipelines and subsurface structures −Land terminals Basis for evaluation of marine operations Reliable weather and ocean forecasts Data as input to EIA studies (i.e. oil drift) Design- and energy basis for offshore renewable energy Huldra jacket Tidal plant in Kvalsundet
4 Tasks – data collection and analyses Wind and waves Currents and water level Sera ice, icebergs, waves in ice/ice in waves Oceanographic parameters −Temperature, salinity, density, oxygen, etc −Marine growth Meteorological parameters −Temperature, precipitation, humidity, icing, wind chill, etc. Always a need to provide data (own initiative or as JIPs) −Measurement campaigns −Hindcast studies −Data purchase −Modelling Icing at Melkøya January 2006
5 Who ? Einar Nygaard – Oceanographer - UiB Børge Kvingedal – Meteorologist - UiB Kjersti Bruserud – Oceanographer –UiB Odd Jan Andersen – Meteorologist – UiB Kenneth J. Eik – Civil Engineer Marin Technology – NTNU Richard Gaches – Oceanographer- UK Sverre Haver - Civil Engineer Marin Technology – NTNU Martin Mathiesen - POLYTEC
6 Operations needing current forecasts Seismic surveysOil spill drift Rig moves Operations in ice
7 What are the requirements to current forecasts Not totally wrong! −Direction forecasted 90° compared with real direction or worse −Magnitude more than 200% or less than 50% compared to real magnitude Need to capture severe and extreme events! Today most Statoil operations are performed without current forecasts The skills of oceanographic models need to be documented and communicated!
11 Conclusions Oceanographic models are needed in a wide range of offshore operations −Hindcast −Forecasts The quality of oceanographic models need to be known! −Studies performed by the offshore industry so far shows that further developments are needed in a number of ocean basins. Access to good ice-ocean models even more important in the future Statoil may provide real time current measurements on request.