Now showing items 104-123 of 880

    • The circulation of the Norwegian Sea- An investigation from space and ocean 

      Raj, Roshin Pappukutty (Doctoral thesis, 2014-01-10)
      The Norwegian Sea circulation plays a key role in maintaining the mild climate of the northwestern Europe via the transport of warm Atlantic Water pole-ward. The first paper addresses the advective currents connecting the ...
    • Climate based multi-year predictions of the Barents Sea cod stock. 

      Årthun, Marius; Bogstad, Bjarte; Daewel, Ute; Keenlyside, Noel; Sandø, Anne Britt; Schrum, Corinna; Ottersen, Geir (Peer reviewed; Journal article, 2018-10-24)
      Predicting fish stock variations on interannual to decadal time scales is one of the major issues in fisheries science and management. Although the field of marine ecological predictions is still in its infancy, it is ...
    • 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 ...
    • Climate change in the North – past, present and future 

      Thiede, Jörn; Johannessen, Ola M. (Episodes: Journal of International Geoscience, Journal article, 2008-03)
      The Nordic countries have produced famous polar explorers and researchers who have generated climate research schools at a variety of locations. The dependence of these countries with respect to the lifelihood of their ...
    • Climate controlled mechanisms of subpolar North Atlantic carbon uptake 

      Fröb, Friederike (Doctoral thesis, 2017-06-27)
      The North Atlantic is a key region for global climate variability. Earlier studies have shown changes in the large-scale circulation, air-sea heat and freshwater fluxes and the carbon cycle in the North Atlantic in relation ...
    • Climate forcing of summer carbon drawdown in the subpolar North Atlantic 

      Svanevik, Magni (Master thesis, 2015-08-28)
      This thesis present a 9-year long time series of surface seawater fCO2 data obtained aboard the MV Nuka Arctica. The Nuka Arctica provide full seasonal fCO2 measurements which give a good picture of the fCO2 variability ...
    • Climatic mean and interannual variation of northern Barents Sea water mass distribution and circulation. A combined study of ROMS, current and hydrography observations 

      Lind, Sigrid Gjessing (Master thesis, 2008-06-02)
      Evaluating current measurements, hydrography observations and model (ROMS) results of the northern Barents Sea, water mass distribution and circulation is investigated. Water mass exchange with the Arctic Ocean is linked ...
    • Climatology of polar lows impacting Norway 

      Haukeland, Magnus (Master thesis, 2016-06-01)
      Polar lows (PLs), mesoscale cyclones in high latitudes, impacting Norway are studied in this thesis. A climatology of PLs in the Nordic seas for the period 1979-2015 is made, by applying a cyclone detection and tracking ...
    • Coastal ocean fronts and eddies imaged with ERS 1 synthetic aperture radar 

      Johannessen, Johnny A.; Shuchman, Robert A.; Digranes, G.; Lyzenga, D. R.; Wackerman, C.; Johannessen, Ola M.; Vachon, P. W. (Peer reviewed; Journal article, 1996-03-15)
      ERS 1 C band synthetic aperture radar (SAR) data were collected during the Norwegian Continental Shelf Experiment (NORCSEX) both in November 1991 during the ERS 1 commissioning phase and at different seasons in 1992 and ...
    • Coastal submesoscale processes and their effect on phytoplankton distribution in the southeastern Bay of Biscay 

      Rodriguez, Xabier Davila; Rubio, Anna; Artigas, Luis Felipe; Puillat, Ingrid; Manso-Narvarte, Ivan; Lazure, Pascal; Caballero, Ainhoa (Journal article; Peer reviewed, 2021)
      Submesoscale processes have a determinant role in the dynamics of oceans by transporting momentum, heat, mass, and particles. Furthermore, they can define niches where different phytoplankton species flourish and accumulate ...
    • COASTWATCH´95: ERS 1/2 SAR detection of natural film on the ocean surface 

      Espedal, Heidi A.; Johannessen, Ola M.; Johannessen, Johnny A.; Dano, E.; Lyzenga, D. R.; Knulst, Johan (Peer reviewed; Journal article, 1998-10-15)
      Ocean mesoscale phenomena such as eddies and current convergence zones can often be seen in synthetic aperture radar (SAR) images due to characteristic patterns caused by natural film induced damping of the waves. Such ...
    • Cold Air Mass Analysis of the Record-Breaking Cold Surge Event over East Asia in January 2016 

      Yamaguchi, Junpei; Kanno, Yuki; Chen, Guixing; Iwasaki, Toshiki (Peer reviewed; Journal article, 2019)
      An extreme cold surge event caused record-breaking low temperatures in East Asia during 20-25 January 2016. The planetary- and synoptic-scale feature of the event is investigated quantitatively using the isentropic cold ...
    • Cold nuclear fusion theories. Exploration of exotic hydrogen states 

      Armelius, Joel Simion (Master thesis, 2018-05-10)
      Nuclear fusion technologies hold the potential to revolutionize the way we produce energy on earth. It is an opportunity to lift our current dependency on external factors such as weather and fossil reserves while producing ...
    • Combined influence of oceanic and atmospheric circulations on Greenland sea ice concentration 

      Chatterjee, Sourav; Raj, Roshin Pappukutty; Bertino, Laurent; Mernild, Jacob Sebastian Haugaard; Subeesh, Meethale P.; Murukesh, Nuncio; Ravichandran, Muthalagu (Journal article; Peer reviewed, 2021)
      The amount and spatial extent of Greenland Sea (GS) ice are primarily controlled by the sea ice export across the Fram Strait (FS) and by local seasonal sea ice formation, melting, and sea ice dynamics. In this study, using ...
    • A combined stokes drift profile under swell and wind sea 

      Breivik, Øyvind; Christensen, Kai Håkon (Journal article; Peer reviewed, 2020)
      A combined directional Stokes drift profile for swell and wind sea is presented. The profile can be used to calculate the shear under crossing seas and as such is relevant for Langmuir turbulence and Stokes–Coriolis forcing, ...
    • Comparison between precipitation estimates of ground-based weather radar composites and GPM’s DPR rainfall product over Germany 

      Pejcic, Velibor; Saavedra Garfias, Pablo; Mühlbauer, Kai; Trömel, Silke; Simmer, Clemens (Journal article; Peer reviewed, 2020)
      We compare more than three years (between 2014 and 2018) of precipitation estimates over Germany from the Dual-frequency Precipitation Radar (DPR) operating on the core satellite of the Global Precipitation Mission (GPM) ...
    • Comparison of direct covariance flux measurements from an offshore tower and a buoy 

      Flügge, Martin; Bakhoday Paskyabi, Mostafa; Reuder, Joachim; Edson, James B.; Plueddemann, Albert J. (Peer reviewed; Journal article, 2016-05)
      Direct covariance flux (DCF) measurements taken from floating platforms are contaminated by wave-induced platform motions that need to be removed before computation of the turbulent fluxes. Several correction algorithms ...
    • A comparison of Langmuir turbulence parameterizations and key wave effects in a numerical model of the North Atlantic and Arctic Oceans 

      Ali, Alfatih; Christensen, Kai Håkon; Breivik, Øyvind; Bertino, Laurent; Malila, Mika Petteri; Raj, Roshin Pappukutty; Chassignet, Eric P.; Bakhoday Paskyabi, Mostafa (Peer reviewed; Journal article, 2019)
      Five different parameterizations of Langmuir turbulence (LT) effect are investigated in a realistic model of the North Atlantic and Arctic using realistic wave forcing from a global wave hindcast. The parameterizations ...
    • A Comparison of LiDAR and Radiosonde Wind Measurements 

      Kumer, Valerie-Marie; Reuder, Joachim; Furevik, Birgitte Rugaard (Peer reviewed; Journal article, 2014)
      Doppler LiDAR measurements are already well established in the wind energy research and their accuracy has been tested against met mast data up to 100 m above ground. However, the new generation of scanning LiDAR have a ...
    • 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 ...