Publications

Featured in O. B. Lien, Vil sette opp 1 mål med solcellepanel ved Jordalsvatnet, Setesdölen, 20th january 2022

 

Featured in J. Seehusen, Matematikk forutser iskast fra vindturbiner – modellen gir økt sikkerhet, 3rd january 2022

 

Featured in L. S. Dalen, Sterkere skog mot snølast og stormkast, Nationen, 22nd june 2021

 

E. C. Iversen, G. Thompson, B. E. Nygaard, Improvements to melting snow behavior in a bulk microphysics scheme, Published in Atmospheric Research 253 105471, 2021

 

Featured in T. Haugstad, Skal bli kvitt tonnevis med is på kraftlinjene, Teknisk ukeblad 0920, 2020

 

D. Swart, A. Kristiansen, R. E. Bredesen, Application of risk management and barrier management for structures in cold climate, IWAIS XVIII, Reykjavik, Iceland, 2019

 

K. Christakos, B. R. Furevik, O. J. Aarnes, Ø. Breivik, L. Tuomi, Ø. Byrkjedal, The importance of wind forcing in fjord wave modelling, Published in Ocean Dynamics 70:57-75, 2019

 

B. R. Broe, M. S. Grønsleth, Ø. Byrkjedal, O. Undheim, Theoretical wake influenced power production for individual turbines using Wind Farm Simulator, WindEurope, Hamburg, Germany, 2018

 

R. E. Bredesen, J. Lindvall, Ø. Byrkjedal, M. S. Grønsleth, Forecasting of atmospheric icing – validation and wind energy applications, WindEurope, Hamburg, Germany, 2018

 

A. S. Haslerud, H. Ágústsson, K. Harstveit, Ø. Byrkjedal, H. Bjørnseth, Simulations of wind and wind forces associated with a train incident in northern Norway during an extreme windstorm, 13th UK conference on wind engineering, Leeds, UK, 2018

 

H. Ágústsson, M. S. Grønsleth, O. K. Eriksen, O. Undheim, K. Harstveit, The E39 bridge project in western Norway – Describing the wind using synchronized Doppler LIDARs and meteorological masts, 13th UK conference on wind engineering, Leeds, UK, 2018

 

H. Ágústsson, B. E. Nygaard, K. Á. Halsan, Frequency of weak winds on a long transmission line fjord crossing, Cigré, Paris, France, 2018

 

Ø. Byrkjedal, T. P. Miinalainen, K. Ringstad, L. Tallhaug, Reduction of the uncertainty in long term correction using higher resolution reference data, WindEurope conference & exhibition, Amsterdam, Netherlands, 2017

 

R.E. Bredesen, M. Drapalik, B. Butt, Understanding and acknowledging the ice throw harard – consequences for regulatory frameworks, risk perception and risk communication, Journal of physics – conference series. 926 012001, 2017

 

B. E. Nygaard, Ø. Byrkjedal, E. Iversen, M. Fredbo, H. Ágústsson, Ø. Welgaard, I. Gutmann, T. Karlsson, M. Virk, H. McInnes, Development of a reliable modeling system for the calculation of rime ice loads on overhead transmission lines, IWAIS XVII, Chongqing, China, 2017

 

Contribution to: N.-E. Clausen, G. Giebel, IceWind: Improved forecast of wind, waves and icing, 2010-2015, Report DTU Wind Energy E-0153, Danish department of wind energy, 2017

 

K. Harstveit, H. Ágústsson, R.E. Bredesen, Ø. Byrkjedal, Measuring and modelling wind conditions in Nowegian fjords, 12th UK conference on wind engineering, Nottingham, UK, 2016

 

R. E. Bredesen, E. Nygaard, K. Harstveit, J. Lindvall, F. Nyhammer, O. Undheim, Ø. Byrkjedal, Extreme-wind atlas for the North Sea Basin, 12th UK conference on wind engineering, Nottingham, UK, 2016

 

B. E. Nygaard, H. Ágústsson, L. A. Moen, Ø. Welgaard, Á. J. Elíasson, Monitoring and forecasting ice loads on a 420 kV transmission line in extreme climatic conditions, Cigré, Paris, France, 2016

 

Lindvall, J., Hansson, J., & Undheim, O., Assessment and optimization of the energy production of operational wind farms, Part 1: Post-construction production assessment, Energiforsk, 2016

https://energiforskmedia.blob.core.windows.net/media/21255/post-construction-production-assessment-of-wind-farms-energiforskrapport-2016-297.pdf

 

Turkyilmaz, U., Hansson, J., & Undheim, O., Assessment and optimization of the energy production of operational wind farms, Part 2: Use of remote sensing for performance optimization, Energiforsk, 2016

https://energiforskmedia.blob.core.windows.net/media/21304/use-of-remote-sensing-for-performance-optimization-of-wind-farms-energiforskrapport-2016-298.pdf

 

Hansson, J., Lindvall, J., & Byrkjedal, Ø., Assessment and optimization of the energy production of operational wind farms, Part 3: Quantification of icing losses, Energiforsk, 2016

https://energiforskmedia.blob.core.windows.net/media/21259/quantification-of-icing-losses-in-wind-farms-energiforskrapport-2016-299.pdf

 

L. Lindvall, Ø. Byrkjedal, Ø. Eriksson, O. Ivanell, Simulating wind farms in the weather research and forecast model, resolution sensitivities, Proceedings of EWEA Offshore, Copenhagen, Denmark, 2015

 

N. Davis, Ø. Byrkjedal, A. Hahmann, N.-E. Clausen, M. Žagar, Ice detection on wind turbines using the observed power curve, Published in Wind Energy; 19:999-1010, 2015

 

Ø. Byrkjedal, J.Hansson, H. Velde, Development of operational forecasting for icing and wind power at cold climate sites, IWAIS XVI, Uppsala, Sweden, 2015

 

E. Bredesen, Refsum, H, IceRisk – Methods for evaluating risk caused by ice throw and ice fall from wind turbines and other tall structures, IWAIS XVI, Uppsala, Sweden, 2015

 

Ø. Byrkjedal, E. C. Iversen, O. Undheim, High resolution meso-scale calculations at two moderately complex sites, Proceedings of EWEA, Paris, France, 2015

 

Løvholm A.L., Berge E., and Byrkjedal Ø (2015).: Spatial and temporal variation of wind power for Norwegian price areas, in proceedings of the 14th Wind Integration Workshop, Brussels, Belgium, 20-22 October 2015

 

Ø. Byrkjedal, R. E. Bredesen. R-E. Keck, N. Sondell, E. Berge, Properties of a wind farm wake as simulated by a numerical weather prediction model for the Smøla wind farm, Proceedings of EWEA, Barcelona, Spain, 2014

 

Ø. Byrkjedal, R-E. Keck, E. Berge, L. Rognlien, M. Håkansson, Time-dependent wind energy calculations, Proceedings of EWEA, Barcelona, Spain, 2014

 

Løvholm A.L. and Berge E. (2014): Spatial and temporal variation of wind power for Norwegian price areas. Oral presentation at Hardanger Workshop (NHH), Bergen, Norway, 25-27 August 2014

 

Løvholm A.L., Berge E., and Bredesen R.E. (2014).: Rapid fluctuations in wind power production during severe storms – a case study, in proceedings of the 13th Wind Integration Workshop, Berlin, Germany, 11-12 November 2014

 

Liléo, E. Berge, O. Undheim, R. Klinkert, R. E. Bredesen, Long-term correction of wind measurements. State-of-the-art, guidelines and future work, Elforsk report, 2013

 

Zhang, B.‐M. Hodge, J. Miettinen, H. Holttinen), E. Gómez‐Lázaro, N. Cutululis, M. Litong‐Palima, P. Sørensen, A. L. Lovholm, E. Berge, J. Dobschinski (2013): Analysis of Variability and Uncertainty in Wind Power Forecasting: An International Comparison, in proceedings of the 12th Wind Integration Workshop, London, United Kingdom, 22-24 October 2013

 

Løvholm A.L. and Berge E. (2012): Validation of energy yield forecasts, Oral presentation at International workshop in forecasting and predictive modeling for renewable energy. Bergen, 1-2 October 2012

 

Holttinen H., Rissanen S., Giebel G., Larsén X.G., Løvholm A.L. and Berge E.(2012): Variability and smoothing effect of wind power production compared to load variability in the Nordic countries, in proceedings of the 11th Wind Integration Workshop, Lisbon, Portugal, 13-15 November 2012

 

Laakso, H. Holttinen, G. Ronsten, L.Tallhaug, R.Horbaty, I. Baring-Gould, A. Lacroix, E. Peltola, B. Tammelin, State-of-the-art of wind energy in cold climate, IEA Wind Annex XIX, 53 p, 2010.

 

Ø. Byrkjedal, Estimating wind power production loss due to icing, Proceedings of IWAIS XIII, Andermatt, Switzerland, 2009

 

Ø. Byrkjedal, E. Berge, Meso-scale models shows promising results in predicting icing,  Proceedings of EWEC, Marseille, France, 2009

 

Harstveit, J., Using Metar-Data to Calculate In-Cloud Icing on a Mountain Site near by the Airport. Proceedings of IWAIS XIII, Andermatt, Switzerland, 2009

 

Harstveit, Hirvonen, Measurements of Cloud Water Content and Droplet Density; and Calculation of Cloud Water Gradients at Kuopio, Finland, Proceedings of IWAIS XIII, Andermatt, Switzerland, 2009

 

Harstveit, Ø. Byrkjedal, E. Berge, Validation of Regional In-Cloud Icing Maps in Norway, Proceedings of IWAS XIII, Andermatt, Switzerland, 2009

 

E. Berge, Ø. Byrkjedal, Y. Ydersbond, D. Kindler, Modelling of offshore wind resources. Comparison of a mesoscale model and measurements from FINO 1 and North Sea oil rigs, Proceedings of EWEC, Marseille, France, 2009.

 

Ø. Byrkjedel, I. Esau, N. G. Kvamstø, Sensitivity of simulated wintertime Arctic atmosphere to vertical resolution in the ARPEGE/IFS model, Climate Dynamics, 2008

 

O.Undheim, H.I.Andersson, E.Berge, Non-linear, microscale modelling of the flow over Askervein hill, 2006

 

Berge, F. Nyhammer, L. Tallhaug, Ø. Jacobsen, An Evaluation of the Wasp Model at a Coastal Mounainous Site in Norway, 2006

 

Peltola, T. Laakso, G. Ronsten, L. Tallhaug, R. Horbaty, I. Baring-Gould, A. Lacroix,
Specific Recommendations for the Development of Wind Energy Projects in Cold Climates. Proceedings of Boreas VII, Saariselkä, Finland, 2005.

 

T. Laakso, E. Peltola, G. Ronsten, L. Tallhaug, R. Horbaty, I. Baring-Gould, A. Lacroix.
Specific recommendations for the developement of wind energy projects in cold climate,  Proceedings of EWEC, London, UK, 2004

 

K. Nyhammer, R. Gløcker, P. O. Eide, E. Berg, E. Førde, Design and optimisation of a wind / hydrogen autonomous power systems on a Norwegian island, Proceedings of EWEC 2004

 

E. Peltola, T. Laakso, G. Ronsten, L. Tallhaug, R. Horbaty, I. Baring-Gould, A. Lacroix,
IEA co-operation on wind turbines in icing and cold climates, Proceedings of Boreas VI, Pyhätunturi, Finland, 2003

 

Berge, et al, Forecasting wind and wind energy production in Norwegian wind farms, KVT/EB/2003/005

 

Holttinen, G. Ronsten, L. Tallhaug, P. Lundsager, R. Horbaty, I. Baring-Gould, A. Lacroix, E. Peltola, T. Laakso, The state-of-the-art of wind energy in cold climates, Proceedings of GWPC, Paris, France 2002

 

Knauer, F. K. Nyhammer, Numerical and Experimental Methods for Wind Farm Site Evaluation in Complex Terrain, Proceedings of EWEC 2002

 

Wolff, P. Lundsager, L. Tallhaug, G. Ronsten, I. Baring-Gould, Cold climate wind energy co-operation under the IEA, Proceedings of Boreas V, Levi, Finland, 2000