Now showing items 811-830 of 1296

    • Ocean surface currents derived from Sentinel-1 SAR Doppler shift measurements 

      Moiseev, Artem (Doctoral thesis, 2021-05-20)
      Reliable information about ocean surface currents is crucial for operational oceanography, regulating weather development, and climate research (e.g., UN SDG 13). Upper-ocean currents are also key for monitoring life below ...
    • Ocean Thermal Energy Conversion 

      Olsen, Leif Mathias Aas (Master thesis, 2016-05-31)
      På grunn av verdens stadig økende behov for energi, samtidig som klimaproblemene har økt er det tydelig at flere tiltak må iverksettes. Ocean Thermal Energy Conversion er lovende fornybar energiteknologi som kan være med ...
    • Ocean-atmosphere interactions in the tropical Atlantic seasonal cycle and multidecadal variability of ENSO 

      Crespo, Lander R. (Doctoral thesis, 2019-06-27)
      The interaction between the ocean and atmosphere drives changes in the climate system in a wide variety of timescales. The strong annual cycle in the equatorial Atlantic, especially over the east, has been object of extensive ...
    • Ocean-wave-atmosphere interaction processes in a fully coupled modelling system 

      Wu, Lichuan; Breivik, Øyvind; Rutgersson, Anna (Peer reviewed; Journal article, 2019-11-27)
      A high‐resolution coupled ocean‐wave‐atmosphere model (Uppsala University Coupled model, UU‐CM) of the Baltic Sea and the North Sea with improved representation of ocean‐wave‐atmosphere interaction processes is presented. ...
    • OceanGliders: A component of the integrated GOOS 

      Testor, Pierre; DeYoung, Brad; Rudnick, Daniel L.; Glenn, Scott; Hayes, Daniel; Lee, Craig; Pattiaratchi, Charitha B.; Hill, Katherine L.; Heslop, Emma; Turpin, Victor; Alenius, Pekka; Barrera, Carlos; Barth, John; Beaird, Nicholas; Becu, Guislain; Bosse, Anthony; Bourrin, François; Brearley, Alex; Chao, Yi; Chen, Sue; Chiggiato, Jacopo; Coppola, Laurent; Crout, Richard; Cummings, James; Curry, Beth; Curry, Ruth; Davis, Richard; Desai, Kruti; DiMarco, Steven; Edwards, Catherine; Fielding, Sophie; Fer, Ilker; Frajka-Williams, Eleanor; Gildor, Hezi; Goni, Gustavo; Gutierrez, Dimitri; Hanson, Stephanie; Haugan, Peter M.; Hebert, David; Heiderich, Joleen; Heywood, Karen J.; Hogan, Patrick; Houpert, Loïc; Huh, Sik; Inall, Mark E.; Ishii, Masso; Ito, Schin-ichi; Itoh, Sachihiko; Jan, Sen; Kaiser, Jan; Karstensen, Johannes; Kirkpatrick, Barbara; Klymak, Jody; Kohut, Josh; Krahmann, Gerd; Krug, Marjolaine; McClatchie, Sam; Marin, Frederic; Mauri, Elena; Mehra, Avichal; Meredith, Michael P.; Miles, Travis; Morell, Julio; Mortier, Laurent; Nicholson, Sarah; O'Callaghan, Joanne; O'Conchubhair, Diarmuid; Oke, Peter R.; Sanz, Enric P.; Palmer, Matthew; Park, JongJin; Perivoliotis, Leonidas; Poulain, Pierre-Marie; Perry, Ruth; Queste, Bastien; Rainville, Luc; Rehm, Eric; Roughan, Moninya; Rome, Nicholas; Ross, Tetjana; Ruiz, Simon; Saba, Grace; Schaeffer, Amandine; Schonau, Martha; Schroeder, Katrin; Shimizu, Yugo; Sloyan, Bernadette M.; Smeed, David; Snowden, Derrick P.; Song, Yumi; Swart, Sebastiaan; Tenreiro, Miguel; Thompson, Andrew F.; Tintore, Joaquin; Todd, Robert E.; Toro, Cesar; Venables, Hugh; Waterman, Stephanie; Watlington, Roy; Wilson, Doug (Peer reviewed; Journal article, 2019-10-02)
      The OceanGliders program started in 2016 to support active coordination and enhancement of global glider activity. OceanGliders contributes to the international efforts of the Global Ocean Observation System (GOOS) for ...
    • Oceanic forcing of the global warming slowdown in multi-model simulations 

      Xu, Xinping; He, Shengping; Furevik, Tore; Gao, Yongqi; Wang, Huijun; Li, Fei; Ogawa, Fumiaki (Journal article; Peer reviewed, 2020)
      Abstract Concurrent with the slowdown of global warming during 2002–2013, the wintertime land surface air temperatures over Eurasia, North America, Africa, Australia, South America, and Greenland experienced notable ...
    • Oceanic heat transport towards Getz Ice Shelf, Amundsen Sea 

      Dundas, Vår Iren Hjorth (Master thesis, 2019-12-11)
      Two years of mooring data from a trough leading up to one of the central ice shelf fronts of the Getz Ice Shelf, Western Amundsen Sea, are used to describe the local hydrography and currents, their variability and possible ...
    • Ocean–atmosphere coupled Pacific Decadal variability simulated by a climate model 

      Luo, Hao; Zheng, Fei; Keenlyside, Noel; Zhu, Jiang (Journal article; Peer reviewed, 2020)
      Currently, the mechanisms for Pacific Decadal Oscillation (PDO) are still disputed, and in particular the atmosphere response to the ocean in the mid-latitude remains a key uncertainty. In this study, we investigate two ...
    • Offshore Wind Farm Wake Effect on Stratification and Coastal Upwelling 

      Bakhoday Paskyabi, Mostafa (Peer reviewed; Journal article, 2015-12-02)
      In this study, the interactions between an offshore wind farm, upper-ocean currents, and stratification are examined under shallow water conditions from a two-dimensional modeling standpoint. The modeling results from two ...
    • Offshore wind power and hydrogen for oil and gas platform electrification 

      Hjellestad, Adrian (Master thesis, 2022-06-01)
    • 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, ...