Browsing Bergen Open Research Archive by Author "Aarnes, Ole Johan"
Now showing items 1-20 of 20
-
Characterization of Wind-Sea- and Swell-Induced Wave Energy along the Norwegian Coast
Christakos, Konstantinos; Varlas, George; Cheliotis, Ioannis; Spyrou, Christos; Aarnes, Ole Johan; Furevik, Birgitte Rugaard (Journal article; Peer reviewed, 2020)The necessity to reduce CO2 emissions in combination with the rising energy demand worldwide makes the extensive use of renewable energy sources increasingly important. To that end, countries with long coastlines, such as ... -
Climate change and safe design of ship structures
Bitner-Gregersen, Elzbieta M.; Vanem, Erik; Gramstad, Odin; Hørte, Torfinn; Aarnes, Ole Johan; Reistad, Magnar; Breivik, Øyvind; Magnusson, Anne Karin; Natvig, Bent (Peer reviewed; Journal article, 2018-02)The paper addresses projected changes of wave climate in the North Atlantic and their impact on the safe design of ships, with a particular focus given on associated uncertainties. The Fifth Assessment Report of the ... -
Comparison of wind speed and wave height trends from twentieth-century models and satellite altimeters
Meucci, Alberto; Young, Ian R.; Aarnes, Ole Johan; Breivik, Øyvind (Journal article; Peer reviewed, 2020)The trends in marine 10-m wind speed U10 and significant wave height Hs found in two century-long reanalyses are compared against a model-only integration. Reanalyses show spurious trends due to the assimilation of an ... -
Directional wave measurements from navigational buoys
Sætre, Camilla; Tholo, Harald; Hovdenes, Jostein; Kocbach, Jan; Hageberg, Anne Ansnes; Klepsvik, Inge; Aarnes, Ole Johan; Furevik, Birgitte Rugaard; Magnusson, Anne Karin (Journal article; Peer reviewed, 2022)In-situ wave measurements are often required by marine industry standards and for verification of coastal wave forecasts. Obtaining wave measurements is costly and it would be advantageous to utilize existing platforms ... -
Extremes and Trends in Wave Climate. A regional and global study
Aarnes, Ole Johan (Doctoral thesis, 2015-01-16)Wind generated surface waves represent a critical factor for offshore constructions and coastal development, and are highly relevant in scientific questions related to climate and weather. The sea state can be described ... -
A general framework to obtain seamless seasonal–directional extreme individual wave heights—Showcase Ekofisk
Bohlinger, Patrik; Economou, Theodoros; Aarnes, Ole Johan; Malila, Mika Petteri; Breivik, Øyvind (Journal article; Peer reviewed, 2023)Extreme wave climate provides the basis for safe design of offshore structures and is crucial for planning and executing offshore operations. Covariate modeling of extremes significantly enriches and improves estimates of ... -
Global ocean wave fields show consistent regional trends between 1980 and 2014 in a multi-product ensemble
Erikson, L.; Morim, J.; Hemer, M.; Young, I.; Wang, X.L.; Mentaschi, L.; Mori, N.; Semedo, A.; Stopa, J.; Grigorieva, V.; Gulev, S.; Aarnes, Ole Johan; Bidlot, J.-R.; Breivik, Øyvind; Bricheno, L.; Shimura, T.; Menendez, M.; Markina, M.; Sharmar, V.; Trenham, C.; Wolf, J.; Appendini, C.; Caires, S.; Groll, N.; Webb, A. (Journal article; Peer reviewed, 2022)Historical trends in the direction and magnitude of ocean surface wave height, period, or direction are debated due to diverse data, time-periods, or methodologies. Using a consistent community-driven ensemble of global ... -
Global Stokes drift climate under the RCP8.5 scenario
Breivik, Øyvind; Carrasco, Ana; Staneva, Joanna; Behrens, Arno; Semedo, Alvaro; Bidlot, Jean-Raymond; Aarnes, Ole Johan (Peer reviewed; Journal article, 2019)The future Stokes drift climate is investigated using a global wave climate projection (2071–2100) forced with EC-EARTH winds under the RCP8.5 scenario. The future climate run is compared against a historical run (1976–2005). ... -
A high‐resolution hindcast of wind and waves for the North Sea, the Norwegian Sea, and the Barents Sea
Reistad, Magnar; Breivik, Øyvind; Haakenstad, Hilde; Aarnes, Ole Johan; Furevik, Birgitte Rugaard; Bidlot, Jean-Raymond (Peer reviewed; Journal article, 2011-05)A combined high-resolution atmospheric downscaling and wave hindcast based on the ERA-40 reanalysis covering the Norwegian Sea, the North Sea, and the Barents Sea is presented. The period covered is from September 1957 to ... -
The Impact of a Reduced High-Wind Charnock Parameter on Wave Growth With Application to the North Sea, the Norwegian Sea, and the Arctic Ocean
Breivik, Øyvind; Carrasco, Ana; Haakenstad, Hilde; Aarnes, Ole Johan; Behrens, Arno; Bidlot, Jean-Raymond; Björkqvist, Jan-Victor; Bohlinger, Patrik; Furevik, Birgitte Rugaard; Staneva, Joanna; Reistad, Magnar (Journal article; Peer reviewed, 2022)As atmospheric models move to higher resolution and resolve smaller scales, the maximum modeled wind speed also tends to increase. Wave models tuned to coarser wind fields tend to overestimate the wave growth under strong ... -
The importance of wind forcing in fjord wave modelling
Christakos, Konstantinos; Furevik, Birgitte Rugaard; Aarnes, Ole Johan; Breivik, Øyvind; Tuomi, Laura; Byrkjedal, Øyvind (Peer reviewed; Journal article, 2019-12-03)Accurate predictions of surface ocean waves in coastal areas are important for a number of marine activities. In complex coastlines with islands and fjords, the quality of wind forcing significantly affects the results. ... -
In situ coastal observations of wave homogeneity and coherence
Christakos, Konstantinos; Gao, Zhen; Furevik, Birgitte Rugaard; Björkqvist, Jan-Victor; Aarnes, Ole Johan (Journal article; Peer reviewed, 2022)A better understanding of wave homogeneity, i.e. the spatial variations of the wave characteristics, and wave coherence in coastal areas and fjords is essential for the design and analysis of sea-crossing infrastructures, ... -
Marine Wind and Wave Height Trends at Different ERA-Interim Forecast Ranges
Aarnes, Ole Johan; Abdalla, Saleh; Bidlot, Jean-Raymond; Breivik, Øyvind (Peer reviewed; Journal article, 2015-01-15)Trends in marine wind speed and significant wave height are investigated using the global reanalysis ERA-Interim over the period 1979–2012, based on monthly-mean and monthly-maximum data. Besides the traditional reanalysis, ... -
NORA10EI: A revised regional atmosphere-wave hindcast for the North Sea, the Norwegian Sea and the Barents Sea
Haakenstad, Hilde; Breivik, Øyvind; Reistad, Magnar; Aarnes, Ole Johan (Peer reviewed; Journal article, 2020)NORA10EI, a new atmosphere and wave hindcast for the Norwegian Sea, the North Sea and the Barents Sea is presented. The hindcast uses ERA‐Interim as initial and boundary conditions and covers the period 1979–2017. The ... -
Nora3: A nonhydrostatic high-resolution hindcast of the North sea, the Norwegian sea, and the Barents sea
Haakenstad, Hilde; Breivik, Øyvind; Furevik, Birgitte Rugaard; Reistad, Magnar; Bohlinger, Patrik; Aarnes, Ole Johan (Journal article; Peer reviewed, 2021)The 3-km Norwegian Reanalysis (NORA3) is a 15-yr mesoscale-permitting atmospheric hindcast of the North Sea, the Norwegian Sea, and the Barents Sea. With a horizontal resolution of 3 km, the nonhydrostatic numerical weather ... -
On Mixed Wind-Sea/Swell Conditions in the Open Ocean : Model and Radar-Observations
Aarnes, Ole Johan (Master thesis, 2005) -
Projected changes in significant wave height toward the end of the 21st century: Northeast Atlantic
Aarnes, Ole Johan; Reistad, Magnar; Breivik, Øyvind; Bitner-Gregersen, Elzbieta M.; Eide, Lars Ingolf; Gramstad, Odin; Magnusson, Anne Karin; Natvig, Bent; Vanem, Erik (Peer reviewed; Journal article, 2017-04)Wind field ensembles from six CMIP5 models force wave model time slices of the northeast Atlantic over the last three decades of the 20th and the 21st centuries. The future wave climate is investigated by considering the ... -
Rogue waves: Results of the ExWaMar project
Bitner-Gregersen, E. M.; Gramstad, Odin; Trulsen, Karsten; Magnusson, Anne Karin; Støle-Hentschel, Susanne; Aarnes, Ole Johan; Breivik, Øyvind (Journal article; Peer reviewed, 2024)Rogue waves, also known as freak waves, have received much attention in the scientific community as well as in media and the marine industry in the past two decades. Forecasts of extreme weather events have always been ... -
Wave Extremes in the Northeast Atlantic
Aarnes, Ole Johan; Breivik, Øyvind; Reistad, Magnar (Peer reviewed; Journal article, 2012-03)The objective of this study is to compute 100-yr return value estimates of significant wave height using a new hindcast developed by the Norwegian Meteorological Institute. This regional hindcast covers the northeast ... -
Wind and wave extremes over the world oceans from very large ensembles
Breivik, Øyvind; Aarnes, Ole Johan; Abdalla, Saleh; Bidlot, Jean-Raymond; Janssen, Peter A. E. M. (Peer reviewed; Journal article, 2014-07)Global return values of marine wind speed and significant wave height are estimated from very large aggregates of archived ensemble forecasts at +240 h lead time. Long lead time ensures that the forecasts represent independent ...