Now showing items 137-156 of 865

    • The COTUR project: remote sensing of offshore turbulence for wind energy application 

      Cheynet, Etienne; Flügge, Martin; Reuder, Joachim; Jakobsen, Jasna Bogunovic; Heggelund, Yngve; Svardal, Benny; Saavedra Garfias, Pablo Andres; Obhrai, Charlotte; Daniotti, Nicolo; Berge, Jarle; Duscha, Christiane Anabell; Wildmann, Norman; Onarheim, Ingrid Husøy; Godvik, Marte (Journal article; Peer reviewed, 2021)
      The paper presents the measurement strategy and data set collected during the COTUR (COherence of TURbulence with lidars) campaign. This field experiment took place from February 2019 to April 2020 on the southwestern coast ...
    • Coupled Al-Si geochemistry in an ocean general circulation model: A tool for the validation of oceanic dust deposition fields? 

      Gehlen, M.; Heinze, Christoph; Maier-Reimer, E.; Measures, C. I. (Peer reviewed; Journal article, 2003-03-19)
      We introduced the marine cycle of Al into a geochemical ocean general circulation model in order to assess the potential of modeled surface ocean dissolved Al as a tracer for dust input to the world ocean. The geochemical ...
    • Coupled atmosphere-ice-ocean dynamics in Dansgaard-Oeschger events 

      Li, Camille; Born, Andreas (Peer reviewed; Journal article, 2018-11-10)
      The Dansgaard-Oeschger events of the last ice age are among the best studied abrupt climate changes, yet a comprehensive explanation is still lacking. They are most pronounced in the North Atlantic, where they manifest as ...
    • Critical vulnerabilities of marine and sea ice–based ecosystems in the high Arctic 

      Johannessen, Ola M.; Miles, Martin W. (Peer reviewed; Journal article, 2010-12-01)
      The objectives of this paper are to summarise: (1) observed 20th-century and projected 21st-century changes in key components of the Arctic climate system and (2) probable impacts on the Arctic marine environment, with ...
    • Current systematic carbon-cycle observations and the need for implementing a policy-relevant carbon observing system 

      Ciais, Philippe; Dolman, AJ; Bombelli, A; Duren, R; Peregon, A; Rayner, PJ; Miller, C; Gobron, N; Kinderman, G; Marland, G; Gruber, N; Chevallier, F; Andres, RJ; Balsamo, G; Bopp, L; Breon, F-M; Broquet, G; Dargaville, R; Battin, TJ; Borges, A; Bovensmann, H; Buchwitz, M; Butler, J; Canadell, JG; Cook, RB; Defries, R; Engelen, R; Gurney, KR; Heinze, Christoph; Heimann, M; Held, A; Henry, M; Law, B; Luyssaert, S; Miller, J; Moriyama, T; Moulin, C; Myneni, RB; Nussli, C; Obersteiner, M; Ojima, D; Pan, Y; Paris, J-D; Piao, SL; Poulter, B; Plummer, S; Quegan, S; Raymond, P; Reichstein, M; Rivier, L; Sabine, C; Schimel, D; Tarasova, O; Valentini, R; Wang, R; Van, Der,Werf,G; Wickland, D; Williams, M; Zehner, C (Peer reviewed; Journal article, 2014-07-03)
      A globally integrated carbon observation and analysis system is needed to improve the fundamental understanding of the global carbon cycle, to improve our ability to project future changes, and to verify the effectiveness ...
    • Currents on the northern shelf of the Yellow Sea 

      Lin, Fan; Asplin, Lars; Budgell, William Paul; Wei, Hao; Fang, Jianguang (Peer reviewed; Journal article, 2019)
      The currents of the northern shelf of the Yellow Sea are investigated using observations of current and hydrography and numerical current model results. The Regional Ocean Model System (ROMS) with a horizontal resolution ...
    • Cyclone Intensification in the Kuroshio Region and its relation to the Sea Surface Temperature Front and Upper‐Level Forcing 

      Tsopouridis, Leonidas; Spensberger, Clemens; Spengler, Thomas (Journal article; Peer reviewed, 2021)
      The Northwest Pacific features strong sea surface temperature (SST) gradients providing favourable conditions for wintertime cyclone intensification in the midlatitudes. To estimate the relative contribution of the SST ...
    • Data assimilation as a learning tool to infer ordinary differential equation representations of dynamical models 

      Bocquet, Marc; Brajard, Julien; Carrassi, Alberto; Bertino, Laurent (Peer reviewed; Journal article, 2019)
      Recent progress in machine learning has shown how to forecast and, to some extent, learn the dynamics of a model from its output, resorting in particular to neural networks and deep learning techniques. We will show how ...
    • Data assimilation using adaptive, non-conservative, moving mesh models 

      Aydogdu, Ali; Carrassi, Alberto; Guider, Colin T.; Jones, Chris K.R.T.; Rampal, Pierre (Peer reviewed; Journal article, 2019)
      Numerical models solved on adaptive moving meshes have become increasingly prevalent in recent years. Motivating problems include the study of fluids in a Lagrangian frame and the presence of highly localized structures ...
    • Data availability principles and practice 

      Smith, J. A.; Cessi, P.; Fer, Ilker; Foltz, G.; Fox-Kemper, Baylor; Heywood, Karen; Jones, N.; Klymak, Jody; Lacasce, Joseph Henry (Journal article, 2020)
    • Decadal prediction of Sahel rainfall: where does the skill (or lack thereof) come from? 

      Mohino, Elsa; Keenlyside, Noel; Pohlmann, Holger (Peer reviewed; Journal article, 2016-12)
      Previous works suggest decadal predictions of Sahel rainfall could be skillful. However, the sources of such skill are still under debate. In addition, previous results are based on short validation periods (i.e. less than ...
    • Decadal solar irradiance variability in northern Europe 

      Parding, Kajsa (Doctoral thesis, 2014-11-28)
      Shortwave (SW) radiation from the Sun is the external energy source on Earth and the fundamental input of energy into the climate system. Variations of the SW radiation and its transfer through the atmosphere can have ...
    • Decreasing Arctic Sea Ice Mirrors Increasing CO2 on Decadal Time Scale 

      Johannessen, Ola M. (Atmospheric and Oceanic Science Letters, Journal article, 2008-11-16)
      Arctic sea ice is a keystone indicator of greenhouse-gas induced global climate change, which is expected to be amplified in the Arctic. Here we directly compare observed variations in arctic sea-ice extent and CO2 since ...
    • Decreasing intensity of open-ocean convection in the Greenland and Iceland seas 

      Moore, George William Kent; Våge, Kjetil; Pickart, Robert S.; Renfrew, Ian A. (Peer reviewed; Journal article, 2015)
      The air–sea transfer of heat and fresh water plays a critical role in the global climate system1. This is particularly true for the Greenland and Iceland seas, where these fluxes drive ocean convection that contributes to ...
    • Deep ocean experiments with fossil fuel carbon dioxide: creation and sensing of a controlled plume at 4 km depth 

      Brewer, Peter G.; Peltzer, Edward T.; Walz, Peter; Aya, Izuo; Yamane, Kenji; Kojima, Ryuji; Nakajima, Yasuharu; Nakayama, Noriko; Haugan, Peter Mosby; Johannessen, Truls (Peer reviewed; Journal article, 2005-01)
      The rapidly rising levels of atmospheric and oceanic CO2 from the burning of fossil fuels has lead to well-established international concerns over dangerous anthropogenic interference with climate. Disposal of captured ...
    • The deepening of the Atlantic water in the Lofoten Basin of the Norwegian Sea, demonstrated by using an active reduced gravity model 

      Orvik, Kjell Arild (Peer reviewed; Journal article, 2004-06-29)
      The Norwegian Atlantic Current (NwAC) as a poleward eastern boundary current is to be considered as the northern limb of the Meridional Overturning Circulation in the North Atlantic (MOC). It transports warm and saline ...
    • Dense water formation and circulation in the Barents Sea 

      Årthun, Marius; Ingvaldsen, Randi; Smedsrud, Lars Henrik; Schrum, Corinna (Peer reviewed; Journal article, 2011)
      Dense water masses from Arctic shelf seas are an important part of the Arctic thermohaline system. We present previously unpublished observations from shallow banks in the Barents Sea, which reveal large interannual ...
    • Dense water formation in the Greenland Sea between 1999 and 2009 

      Svingen, Kristin (Master thesis, 2019-08-22)
      A 10-year continuous hydrographic data record from moored profilers located in the central Greenland Sea between 1999 and 2009 were used to examine the mixed-layer depth evolution through winter as well as interannual ...
    • Description and evaluation of the Bergen climate model: ARPEGE coupled with MICOM 

      Furevik, Tore; Bentsen, Mats; Drange, Helge; Kindem, I. K. T.; Kvamstø, Nils Gunnar; Sorteberg, Asgeir (Peer reviewed; Journal article, 2003-07)
      A new coupled atmosphere–ocean–sea ice model has been developed, named the Bergen Climate Model (BCM). It consists of the atmospheric model ARPEGE/IFS, together with a global version of the ocean model MICOM including a ...
    • Design of rectifier system for electric ferries 

      Sagedal, Andreas (Master thesis, 2018-06-16)
      This study investigates the requirements and technologies to provide power from shore to ship when the electric ferry is at quay. Different rectifier systems will be evaluated in terms of requirements given by the utility ...