• Offshore wind turbine wake characteristics using scanning doppler lidar 

      Krishnamurthy, Raghavendra; Reuder, Joachim; Svardal, Benny; Fernando, Harindra Joseph S.; Jakobsen, Jasna Bogunovic (Peer reviewed; Journal article, 2017-10)
      Within an offshore wind park, wind flow characteristics are quite complex and govern both the energy production and the structural wind turbine response. An experimental study focussed on assessing the spatial variability ...
    • Oil Spill Modeling in Sea Ice Covered Ocean 

      Martins de Aguiar, Victor Cesar (Master thesis, 2021-06-01)
      The ongoing reduction in extent and thickness of sea ice in the Arctic allows the expansion of shipping activity and oil exploration in the high north, and with that a potential increased risk of oil spill in ice covered ...
    • Ombygging av en én-sylindret dieselmotor til dual fuel-drift og testing av alternative gassformede drivstoff 

      Samnøy, Thomas (Master thesis, 2020-06-26)
      Denne rapporten beskriver ombygging av en én-sylindret dieselmotor til dual fuel-drift, og videre testing av alternative gassformede drivstoff. I tillegg omhandler rapporten simuleringer gjort på samme motor ved hjelp av ...
    • On a nonlinear rod exhibiting only axial and bending deformations: mathematical modeling and numerical implementation 

      Gebhardt, Cristian Guillermo; Romero, Ignacio (Journal article; Peer reviewed, 2021)
      In this work, we present the mathematical formulation and the numerical implementation of a new model for initially straight, transversely isotropic rods. By adopting a configuration space that intrinsically avoids shear ...
    • On dynamical downscaling of ENSO-induced oceanic anomalies off Baja California Peninsula, Mexico: role of the air-sea heat flux 

      Rivas Camargo, David Alberto; Counillon, Francois Stephane; Keenlyside, Noel Sebastian (Journal article; Peer reviewed, 2023)
      The El Niño Southern Oscillation (ENSO) phenomenon is responsible for important physical and biogeochemical anomalies in the Northeastern Pacific Ocean. The event of 1997-98 has been one of the most intense in the last ...
    • On effect of wave breaking on short wind waves 

      Kudryavtsev, Vladimir; Johannessen, Johnny A. (Peer reviewed; Journal article, 2004-10)
      The paper presents an attempt to estimate short wave generation by wave breaking. A breaking wave crest disturbs the surface and generates sub-surface turbulence. The locally disturbed area further disperses and feeds short ...
    • On freshwater and the density-driven circulation in the northern seas 

      Lambert, Erwin (Doctoral thesis, 2017-11-29)
      The Arctic Ocean and the Nordic Seas are freshening, in part due to anthropogenic climate change. Within the northern seas, seawater density is in part dominated by temperature, and in part by salinity. This reflects on ...
    • On radar imaging of current features: 1. Model and comparison with observations 

      Kudryavtsev, Vladimir; Akimov, D.; Johannessen, Johnny A.; Chapron, B. (Journal article, 2005-07-22)
      A new radar imaging model of ocean current features is proposed. The simulated normalized radar cross section (NRCS) takes into account scattering from ‘‘regular’’ surfaces (by means of resonant Bragg scattering and specular ...
    • On radar imaging of current features: 2. Mesoscale eddy and current front detection 

      Johannessen, Johnny A.; Kudryavtsev, Vladimir; Akimov, D.; Eldevik, Tor; Winther, Nina Gjerde; Chapron, B. (Peer reviewed; Journal article, 2005-07-22)
      The surface signatures of meandering fronts and eddies have been regularly observed and documented in synthetic aperture radar (SAR) images. Wave-current interactions, the suppression of short wind waves by natural film, ...
    • On Stochastic Reduced-Order and LES-based Models of Offshore Wind Turbine Wakes 

      Bakhoday Paskyabi, Mostafa; Krutova, Maria; Nielsen, Finn Gunnar; Reuder, Joachim; Guernaoui, O. EL. (Journal article; Peer reviewed, 2020)
      In this paper, the primary objective is to investigate flow structures in the wake of wind turbines based on applying a truncated Proper Orthogonal Decomposition (POD) approach. This scheme decomposes the three-dimensional ...
    • On the Dynamics and Water Mass Transformation of a Boundary Current Connecting Alpha and Beta Oceans 

      Lambert, Erwin; Eldevik, Tor; Spall, Michael A. (Peer reviewed; Journal article, 2018-10-19)
      A subpolar marginal sea, like the Nordic seas, is a transition zone between the temperature-stratified subtropics (the alpha ocean) and the salinity-stratified polar regions (the beta ocean). An inflow of Atlantic Water ...
    • On the effect of climate trends in coastal density on deep water renewal frequency in sill fjords—A statistical approach 

      Darelius, Elin Maria K. (Journal article; Peer reviewed, 2020)
      The basin water of a sill fjord is renewed intermittently, when the density of the water at sill level in the ocean outside the fjord is high enough for it to sink down to the bottom of the fjord. How often the basin water ...
    • On the effect of nocturnal radiation fog on the development of the daytime convective boundary layer: A large-eddy simulation study 

      Schwenkel, Johannes; Maronga, Bjørn (Journal article; Peer reviewed, 2022)
      The potential effect of failing to predict nocturnal deep radiation fog on the development of the daytime convective boundary layer (CBL) is studied using large-eddy simulations. Typical spring and autumn conditions for ...
    • On the effect of topography and wind on warm water inflow— An idealized study of the southern Weddell Sea continental shelf system 

      Daae, Kjersti; Hattermann, Tore; Darelius, Elin Maria K.; Fer, Ilker (Peer reviewed; Journal article, 2017-03)
      An idealized eddy-resolving numerical model, with topographic features common to the southern Weddell Sea, is constructed to study mechanisms through which warm deep water enters a wide continental shelf with a trough. The ...
    • On the Freshwater Transport in the Fram Strait 

      Karpouzoglou, Theodoros (Doctoral thesis, 2023-11-03)
      Ferskvann fra Arktisk er en nøkkelparameter i det globale klimasystemet. Arktisk ferskvann har sin opprinnelse fra nedbør eller havis-smelting, og konsentrasjonen av det i havet varierer på flere tidsskalaer. Økningen i ...
    • On the future of Argo: A global, full-depth, multi-disciplinary array 

      Roemmich, Dean; Alford, Matthew H.; Claustre, Herve; Johnson, Kenneth S.; King, Brian; Moum, James; Oke, Peter R.; Owens, W. Brechner; Pouliquen, Sylvie; Purkey, Sarah; Scanderbeg, Megan; Suga, Toshio; Wijffels, Susan E.; Zilberman, Nathalie; Bakker, Dorothee; Baringer, Molly O.; Belbeoch, Mathieu; Bittig, Henry C.; Boss, Emmanuel; Calil, Paulo; Carse, Fiona; Carval, Thierry; Chai, Fei; Conchubhair, Diarmuid Ó.; D'Ortenzio, Fabrizio; Dall'Olmo, Giorgio; Desbruyeres, Damien; Fennel, Katja; Fer, Ilker; Ferrari, Raffaele; Forget, Gael; Freeland, Howard; Fujiki, Tetsuichi; Gehlen, Marion; Greenan, Blair; Hallberg, Robert; Hibiya, Toshiyuki; Hosoda, Shigeki; Jayne, Steven; Jochum, Markus; Johnson, Gregory C.; Kang, KiRyong; Kolodziejczyk, Nicolas; Körtzinger, Arne; Le Traon, Pierre-Yves; Lenn, Yueng-Djern; Maze, Guillaume; Mork, Kjell Arne; Morris, Tamaryn; Nagai, Takeyoshi; Nash, Jonathan; Garabato, Alberto N.; Olsen, Are; Pattabhi, Rama R.; Prakash, Satya; Riser, Stephen; Schmechtig, Catherin; Shroyer, Emily; Sterl, Andreas; Sutton, Philip; Talley, Lynne; Tanhua, Toste; Thierry, Virginie; Thomalla, Sandy; Toole, John; Troisi, Ariel; Trull, Thomas W.; Turton, Jonathan D.; Vélez-Belchi, Pedro Joaquin; Walczowski, Waldemar; Wang, Haili; Wanninkhof, Rik; Waterhouse, Amy F.; Watson, Andrew; Wilson, Cara; Wong, Annie P.S.; Xu, Jianping; Yasuda, Ichiro (Peer reviewed; Journal article, 2019-08-02)
      The Argo Program has been implemented and sustained for almost two decades, as a global array of about 4000 profiling floats. Argo provides continuous observations of ocean temperature and salinity versus pressure, from ...
    • On the future of Argo: A global, full-depth, multi-disciplinary array 

      Roemmich, Dean; Alford, Matthew H.; Claustre, Herve; Johnson, Kenneth S.; King, Brian; Moum, James; Oke, Peter R.; Owens, W. Brechner; Pouliquen, Sylvie; Purkey, Sarah; Scanderbeg, Megan; Suga, Toshio; Wijffels, Susan E.; Zilberman, Nathalie; Bakker, Dorothee; Baringer, Molly O.; Belbeoch, Mathieu; Bittig, Henry C.; Boss, Emmanuel; Calil, Paulo; Carse, Fiona; Carval, Thierry; Chai, Fei; Conchubhair, Diarmuid Ó.; D'Ortenzio, Fabrizio; Dall'Olmo, Giorgio; Desbruyeres, Damien; Fennel, Katja; Fer, Ilker; Ferrari, Raffaele; Forget, Gael; Freeland, Howard; Fujiki, Tetsuichi; Gehlen, Marion; Greenan, Blair; Hallberg, Robert; Hibiya, Toshiyuki; Hosoda, Shigeki; Jayne, Steven; Jochum, Markus; Johnson, Gregory C.; Kang, KiRyong; Kolodziejczyk, Nicolas; Körtzinger, Arne; Le Traon, Pierre-Yves; Lenn, Yueng-Djern; Maze, Guillaume; Mork, Kjell Arne; Morris, Tamaryn; Nagai, Takeyoshi; Nash, Jonathan; Garabato, Alberto N.; Olsen, Are; Pattabhi, Rama R.; Prakash, Satya; Riser, Stephen; Schmechtig, Catherin; Shroyer, Emily; Sterl, Andreas; Sutton, Philip; Talley, Lynne; Tanhua, Toste; Thierry, Virginie; Thomalla, Sandy; Toole, John; Troisi, Ariel; Trull, Thomas W.; Turton, Jonathan D.; Vélez-Belchi, Pedro Joaquin; Walczowski, Waldemar; Wang, Haili; Wanninkhof, Rik; Waterhouse, Amy F.; Watson, Andrew; Wilson, Cara; Wong, Annie P.S.; Xu, Jianping; Yasuda, Ichiro (Peer reviewed; Journal article, 2019-08-02)
      The Argo Program has been implemented and sustained for almost two decades, as a global array of about 4000 profiling floats. Argo provides continuous observations of ocean temperature and salinity versus pressure, from ...
    • On the Groupiness and Intermittency of Oceanic Whitecaps 

      Malila, Mika Petteri; Thomson, J.; Breivik, Øyvind; Benetazzo, A.; Scanlon, B.; Ward, B. (Journal article; Peer reviewed, 2022)
      The enhancement of wave breaking activity during wave group passage is investigated using coherent field observations of the instantaneous sea surface elevation and whitecap coverage from platform-based stereo video ...
    • On the Influence of Latent and Sensible Heating for Maintaining Baroclinicity in the Gulf Stream Region 

      Dahl-Eriksen, Ståle (Master thesis, 2016-06-01)
      For the North Atlantic storm track to collocate with the ocean front, there has to be efficient restoring mechanisms for baroclinicity. The total diabatic heating is agreed to play the most dominant role, but whether the ...