NORSEWIND – Mesoscale model derived Wind Atlases for the Irish Sea, the North Sea and the Baltic Sea

Erik Berge, Charlotte Bay Hasager, Rolv Erlend Bredesen, Andrea N. Hahmann, Oyvind Byrkjedal, Alfredo Pena Diaz, Reiar Kravik, Knut Harstveit, Paolo Costa, Andy Oldroyd

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Abstract

As a part of the EU Framework 7 R&D Program NORSEWInD, Wind Atlases for the Irish Sea, the North Sea and the Baltic Sea have been developed and made public available. In the present study the development of the offshore Wind Atlases is focused on the use of mesoscale model data since the access to measurements and satellite data have been limited. Mesoscale model runs were carried out for focus areas with high spatial model resolution (2 km) and the entire Wind Atlas domain with coarser resolution (6 km). The annual average wind speed data have been long-term adjusted. Through the NORSEWInD project we have experienced that mesoscale models are efficient and accurate tools for generating offshore Wind Atlases. Long-term annual average wind speeds are estimated to have a random uncertainty of ±4.2 % and a bias of -1.3 % which is lower than what is experienced onshore. For the Weibull k-parameter we estimate a random uncertainty of ±4.0 % and a bias of -6.4 % which is higher than for the average annual wind speed. It is emphasized that the amount of validation data is small and considerable spatial variability of the uncertainty may be expected. For example, near coastal zones model errors could be expected to be larger than far offshore.
Original languageEnglish
Title of host publicationProceedings of EWEA 2013
Number of pages6
Volume1
PublisherEuropean Wind Energy Association (EWEA)
Publication date2013
Pages507-512
ISBN (Print)978-163266314-6
Publication statusPublished - 2013
EventEuropean Wind Energy Conference & Exhibition 2013 - Vienna, Austria
Duration: 4 Feb 20137 Feb 2013
http://www.ewea.org/annual2013/

Conference

ConferenceEuropean Wind Energy Conference & Exhibition 2013
CountryAustria
CityVienna
Period04/02/201307/02/2013
Internet address

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