Now showing items 1-20 of 712

    • An Investigation of the Optical Properties of Metal Nanoparticles for the Application in a Diffuse Light Solar Cell 

      Dyrhovden, Mirjam Sigmundsdotter (The University of Bergen, 2020-06-25)
      The need of renewable energy is increasing as the global energy demand increases concurrently with greenhouse gas emissions from energy use. According to the International Energy Agency, the energy demand will rise by 1.3 ...
      Master thesis
    • Atlantic thermohaline changes and its implications on the carbon cycle during the Last Interglacial 

      Kessler, Augustin (The University of Bergen, 2020-06-16)
      Large and abrupt changes in the Earth’s climate have been recorded in marine records and Greenland ice cores and mostly characterize the last glacial period. These sudden transitions of climate, occurring within a few ...
      Doctoral thesis
    • Warmer and Wetter Winters over the high-latitude North Atlantic : an atmospheric circulation perspective 

      Wickström, Siiri (The University of Bergen, 2020-05-19)
      The high-latitude North Atlantic -especially the Svalbard archipelago and its surrounding seas - has undergone remarkable changes in the last half-century. These regions are recognized as a hotspot of the Arctic ...
      Doctoral thesis
    • Modelling Energy Systems with Variable Renewable Energy 

      Ringkjøb, Hans-Kristian (The University of Bergen, 2020-05-15)
      Today, the majority of anthropogenic greenhouse gas emissions stem from the burning of fossil fuels for energy purposes. In order to avoid devastating consequences of climate change, the world needs to reduce its emissions ...
      Doctoral thesis
    • The role of the Southern Ocean in past global biogeochemical cycling 

      Morée, Anne (The University of Bergen, 2020-04-27)
      This thesis describes several recent advances on the role of the Southern Ocean in past global biogeochemical cycling. We focus on the ocean of the Last Glacial Maximum (LGM) and the Pleistocene epoch and apply proxies of ...
      Doctoral thesis
    • Understanding of European Cold Extremes, Sudden Stratospheric Warming, and Siberian Snow Accumulation in the Winter of 2017/18 

      Lü, Zhuozhuo; Li, Fei; Orsolini, Yvan; Gao, Yongqi; He, Shengping (American Meteorological Society, 2020)
      It is unclear whether the Eurasian snow plays a role in the tropospheric driving of sudden stratospheric warming (SSW). The major SSW event of February 2018 is analyzed using reanalysis datasets. Characterized by predominant ...
      Journal article
    • Atlantic Meridional Overturning Circulation and δ13C Variability During the Last Interglacial 

      Kessler, Augustin; Bouttes, Nathaelle; Roche, Didier M.; Ninnemann, Ulysses Silas; Galaasen, Eirik Vinje; Tjiputra, Jerry (American Geophysical Union, 2020)
      The Atlantic Meridional Overturning Circulation (AMOC) is thought to be relatively vigorous and stable during Interglacial periods on multimillennial (equilibrium) timescales. However, recent proxy (δ13C benthic) reconstructions ...
      Journal article
    • Potential and limitations in estimating sensible-heat-flux profiles from consecutive temperature profiles using remotely-piloted aircraft systems 

      Båserud, Line; Reuder, Joachim; Jonassen, Marius Opsanger; Bonin, Timothy; Chilson, Phillip B.; Jiménez, Maria A.; Durand, Pierre (Springer, 2020)
      Profiles of the sensible heat flux are key to understanding atmospheric-boundary-layer (ABL) structure and development. Based on temperature profiling by a remotely-piloted aircraft system (RPAS), the Small Unmanned ...
      Journal article
    • Development of community, capabilities and understanding through unmanned aircraft-based atmospheric research: The LAPSE-RATE campaign 

      De Boer, Gijs; Diehl, Constantin; Jacob, Jamey; Houston, Adam; Smith, Suzanne; Chilson, Phillip B.; Schmale, David; Intrieri, Janet; Pinto, James; Elston, Jack; Brus, David; Kemppinen, Osku; Clark, Alex; Lawrence, Dale; Bailey, Sean; Sama, Michael; Frazier, Amy; Crick, Christopher; Natalie, Victoria; Pillar-Little, Elizabeth; Klein, Petra; Waugh, Sean; Lundquist, Julie K.; Barbieri, Lindsay; Kral, Stephan; Jensen, Anders; Dixon, Cory; Borenstein, Steven; Hesselius, Daniel; Human, Kathleen; Hall, Philip; Argrow, Brian; Thronberry, Troy; Wright, Randy; Kelly, Jason (American Meteorological Society, 2020)
      Because unmanned aircraft systems (UAS) offer new perspectives on the atmosphere, their use in atmospheric science is expanding rapidly. In support of this growth, the International Society for Atmospheric Research Using ...
      Journal article
    • 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 (Wiley, 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 ...
      Journal article
    • An Improved Surface Boundary Condition for Large-Eddy Simulations Based on Monin–Obukhov Similarity Theory: Evaluation and Consequences for Grid Convergence in Neutral and Stable Conditions 

      Maronga, Bjørn; Knigge, Christoph; Raasch, Siegfried (Springer, 2020)
      Monin–Obukhov similarity theory is used in large-eddy simulation (LES) models as a surface boundary condition to predict the surface shear stress and scalar fluxes based on the gradients between the surface and the first ...
      Journal article
    • A wavelet-entropy based segmentation of turbulence measurements from a moored shear probe near the wavy sea surface 

      Bakhoday Paskyabi, Mostafa (Springer Nature, 2019-12-17)
      In this study, we explore the applicability of a wavelet-entropy based segmentation technique in reduction of motion-induced contaminations in time-domain from subsurface turbulence measurements made by a moving shear ...
      Journal article
    • Surface ocean pH and buffer capacity: past, present and future 

      Jiang, Li-qing; Carter, Brendan R; Feely, Richard A; Lauvset, Siv Kari; Olsen, Are (Springer, 2019-12-09)
      The ocean’s chemistry is changing due to the uptake of anthropogenic carbon dioxide (CO2). This phenomenon, commonly referred to as “Ocean Acidification”, is endangering coral reefs and the broader marine ecosystems. In ...
      Journal article
    • Global carbon budget 2019 

      Friedlingstein, Pierre; Jones, Matthew W.; O'Sullivan, Michael; Andrew, Robbie; Hauck, Judith; Peters, Glen Philip; Peters, Wouter; Pongratz, Julia; Sitch, Stephen; Le Quéré, Corinne; Bakker, Dorothée C.E.; Canadell, Josep G.; Ciais, Philippe; Jackson, Robert B.; Anthoni, Peter; Barbero, Leticia; Bastos, Ana; Bastrikov, Vladislav; Becker, Meike; Bopp, Laurent; Buitenhuis, Erik; Chandra, Naveen; Chevallier, Frédéric; Chini, Louise P.; Currie, Kim I.; Feely, Richard A.; Gehlen, Marion; Gilfillan, Dennis; Gkritzalis, Thanos; Goll, Daniel S.; Gruber, Nicolas; Gutekunst, Sören; Harris, Ian; Haverd, Vanessa; Houghton, Richard A.; Hurtt, George; Ilyina, Tatiana; Jain, Atul K.; Joetzjer, Emilie; Kaplan, Jed O.; Kato, Etsushi; Goldewijk, Kees Klein; Korsbakken, Jan Ivar; Landschutzer, Peter; Lauvset, Siv Kari; Lefevre, Nathalie; Lenton, Andrew; Lienert, Sebastian; Lombardozzi, Danica; Marland, Gregg; McGuire, Patrick C.; Melton, Joe R.; Metzl, Nicolas; Munro, David R.; Nabel, Julia E.M.S.; Nakaoka, Shin-Ichiro; Neill, Craig; Omar, Abdirahman; Ono, Tsuneo; Peregon, Anna; Pierrot, Denis; Poulter, Benjamin; Rehder, Gregor; Resplandy, Laure; Robertson, Eddy; Rödenbeck, Christian; Séférian, Roland; Schwinger, Jörg; Smith, Naomi; Tans, Pieter P.; Tian, Hanqin; Tilbrook, Bronte; Tubiello, Francesco N.; van der Werf, Guido R.; Wiltshire, Andrew J.; Zaehle, Sönke (Copernicus, 2019-12-04)
      Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere – the “global carbon budget” – is important to better understand the global ...
      Journal article
    • The importance of wind forcing in fjord wave modelling 

      Christakos, Konstantinos; Furevik, Birgitte Rugaard; Aarnes, Ole Johan; Breivik, Øyvind; Tuomi, Laura; Byrkjedal, Øyvind (Springer, 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. ...
      Journal article
    • Low Level Jets over the Southern North Sea 

      Wagner, David; Steinfeld, Gerald; Witha, Björn; Wurps, Hauke; Reuder, Joachim (Science Publishers, 2019-12-02)
      An extensive analysis of Low Level Jets (LLJs) over the Southern North Sea is presented. The study is based on observational data from a wind LiDAR and a passive microwave radiometer, operated from May 2015 to October 2016 ...
      Journal article
    • The Lagrangian particle dispersion model FLEXPART version 10.4 

      Pisso, Ignacio; Sollum, Espen; Grythe, Henrik; Kristiansen, Nina Iren; Cassiani, Massimo; Eckhardt, Sabine; Arnold, Delia; Morton, Don; Thompson, Rona Louise; Zwaaftink, Christine Groot; Evangeliou, Nikolaos; Sodemann, Harald; Haimberger, Leopold; Henne, Stephan; Brunner, Dominik; Burkhart, John; Fouilloux, Anne Claire; Brioude, Jerome; Philipp, Anne; Seibert, Petra; Stohl, Andreas (Copernicus Publications, 2019-12-02)
      The Lagrangian particle dispersion model FLEXPART in its original version in the mid-1990s was designed for calculating the long-range and mesoscale dispersion of hazardous substances from point sources, such as those ...
      Journal article
    • Improving weather and climate predictions by training of supermodels 

      Schevenhoven, Francine Janneke; Selten, Frank; Carrassi, Alberto; Keenlyside, Noel (Copernicus, 2019-11-28)
      Recent studies demonstrate that weather and climate predictions potentially improve by dynamically combining different models into a so-called “supermodel”. Here, we focus on the weighted supermodel – the supermodel's time ...
      Journal article
    • Ocean-wave-atmosphere interaction processes in a fully coupled modelling system 

      Wu, Lichuan; Breivik, Øyvind; Rutgersson, Anna (American Geophysical Union, 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. ...
      Journal article
    • Vertical structure and seasonal variability of the inflow to the Lofoten Basin inferred from high resolution Lagrangian simulations 

      Dugstad, Johannes Sandanger; Kozalka, Inga Monika; Isachsen, Pål Erik; Dagestad, Knut-Frode; Fer, Ilker (American Geophysical Union, 2019-11-13)
      The Lofoten Basin in the eastern Nordic Seas plays a central role in modifying the warm Atlantic Water inflow toward the Arctic Ocean. Here, the Atlantic Water experiences increased residence times, cooling, and substantial ...
      Journal article