Now showing items 1189-1208 of 1296

    • Turbulence-particle interactions under surface gravity waves 

      Bakhoday Paskyabi, Mostafa (Peer reviewed; Journal article, 2016)
      The dispersion and transport of single inertial particles through an oscillatory turbulent aquatic environment are examined numerically by a Lagrangian particle tracking model using a series of idealised test cases. The ...
    • Turbulent diffusion and transport from a CO2 lake in the deep ocean 

      Haugan, Peter Mosby; Alendal, Guttorm (Journal article, 2005-09-21)
      If liquid CO2 is stored as a dense ‘‘lake’’ on the deep ocean floor, it is expected to dissolve in seawater. Ocean currents and turbulence can increase the net rate of CO2 release by several orders of magnitude compared ...
    • Turbulent heat and momentum fluxes in the upper ocean under Arctic sea ice 

      Peterson, Algot Kristoffer; Fer, Ilker; McPhee, Miles G.; Randelhoff, Achim (Peer reviewed; Journal article, 2017-02)
      We report observations of heat and momentum fluxes measured in the ice-ocean boundary layer from four drift stations between January and June 2015, covering from the typical Arctic basin conditions in the Nansen Basin to ...
    • Turbulent kinetic energy estimates from profiling wind LiDAR measurements and their potential for wind energy applications 

      Kumer, Valerie-Marie; Reuder, Joachim; Dorninger, Manfred; Zauner, Rudolf; Grubišić, Vanda (Peer reviewed; Journal article, 2016-07-10)
      This study shows that turbulent kinetic energy (TKE) estimates, derived from static LiDARs in Doppler Beam Swing (DBS) mode, permit a qualitative and quantitative characterization and analysis of turbulent structures as ...
    • Turbulent upper-ocean mixing affected by meltwater layers during Arctic summer 

      Randelhoff, Achim; Fer, Ilker; Sundfjord, Arild (Peer reviewed; Journal article, 2017-04)
      Every summer, intense sea ice melt around the margins of the Arctic pack ice leads to a stratified surface layer, potentially without a traditional surface mixed layer. The associated strengthening of near-surface ...
    • Twenty-One Years of Phytoplankton Bloom Phenology in the Barents, Norwegian, and North Seas 

      Silva, Edson; Counillon, François; Brajard, Julien; Korosov, Anton; Pettersson, Lasse H; Samuelsen, Annette; Keenlyside, Noel (Journal article; Peer reviewed, 2021)
      Phytoplankton blooms provide biomass to the marine trophic web, contribute to the carbon removal from the atmosphere and can be deadly when associated with harmful species. This points to the need to understand the phenology ...
    • Two decades of match-mismatch in Northeast Arctic cod – Feeding conditions and survival 

      Kajiya Endo, Clarissa Akemi; Stige, Leif Christian; Skogen, Morten D.; Ciannelli, Lorenzo; Vikebø, Frode Bendiksen (Journal article; Peer reviewed, 2022)
      The successful recruitment of Northeast Arctic (NEA) cod is thought to depend on sufficient and suitable prey for the newly hatched larvae, in particular the nauplii stages of the lipid-rich calanoid copepod species Calanus ...
    • A two-layer model for linear stability analysis of shelf-slope currents. 

      Teigen, Sigurd Henrik (Research report, 2011)
      A method for obtaining the normal mode solution of a linear two-layer system over sloping topography has been derived and implemented, providing a basic tool for analysing the disper- sion relation and modal structure of ...
    • The UN decade of ocean science for sustainable development 

      Ryabinin, Vladimir; Barbière, Julian; Haugan, Peter M.; Kullenberg, Gunnar; Smith, Neville; McLean, Craig; Troisi, Ariel; Fischer, Albert S.; Aricò, Salvatore; Aarup, Thorkild; Pissierssens, Peter; Visbeck, Martin; Enevoldsen, Henrik; Rigaud, Julie (Peer reviewed; Journal article, 2019-07-31)
      Our civilization needs a clean, resilient, productive, safe, well-observed, documented and predicted ocean. “The ocean we need for the future we want” was the motto of the Intergovernmental Oceanographic Commission proposal ...
    • Uncertainties in Arctic sea ice thickness and volume: new estimates and implications for trends 

      Zygmuntowska, Marta; Rampal, Pierre; Ivanova, Natalia; Smedsrud, Lars Henrik (Peer reviewed; Journal article, 2014-04-22)
      Sea ice volume has decreased in the last decades, evoked by changes in sea ice area and thickness. Estimates of sea ice area and thickness rely on a number of geophysical parameters which introduce large uncertainties. To ...
    • Uncertainty in twenty-first century projections of the Atlantic Meridional Overturning Circulation in CMIP3 and CMIP5 models 

      Reintges, Annika; Martin, Thomas; Latif, Mojib; Keenlyside, Noel (Peer reviewed; Journal article, 2016-05-26)
      Uncertainty in the strength of the Atlantic Meridional Overturning Circulation (AMOC) is analyzed in the Coupled Model Intercomparison Project Phase 3 (CMIP3) and Phase 5 (CMIP5) projections for the twenty-first century; ...
    • Under-Ice Phytoplankton Blooms in the Central Arctic Ocean: Insights From the First Biogeochemical IAOOS Platform Drift in 2017 

      Boles, Elisabeth; Provost, Christine; Garçon, Veronique; Bertosio, Cécilia; Athanase, Marylou; Koenig, Zoé Charlotte; Sennéchael, Nathalie (Journal article; Peer reviewed, 2020)
      In April 2017, the first Ice Atmosphere Arctic Ocean Observing System (IAOOS) platform equipped with biogeochemical sensors was deployed near the North Pole. Over the next 8 months it meandered southward with the ice, ...
    • Understanding differences in North Atlantic poleward ocean heat transport and its variability in global climate models 

      Madonna, Erica; Sandø, Anne Britt (Journal article; Peer reviewed, 2021)
      The ocean heat transport from the North Atlantic to the Barents Sea impacts the sea ice extent and the energy budget of the Arctic. The analyzed climate models from the fifth (CMIP5) and sixth Coupled Model Intercomparison ...
    • 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 (Peer reviewed; Journal article, 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 ...
    • Understanding the dynamics of recent Norwegian extreme weather events and their influence on energy production 

      Pecnjak, Martin (Master thesis, 2021-08-05)
      The growing frequency and severity of extreme weather events in the Northern Hemisphere has prompted a lot of research being done on their origin and physical mechanisms. Both simplified and complex approaches have been ...
    • Understanding the role of organic matter cycling for the spatio-temporal structure of PCBs in the North Sea 

      Daewel, Ute; Yakushev, Evgeniy; Schrum, Corinna; Nizzetto, Luca; Mikheeva, Elena (Journal article; Peer reviewed, 2020)
      Using the North Sea as a case scenario, a combined three-dimensional hydrodynamic-biogeochemical-pollutant model was applied for simulating the seasonal variability of the distribution of hydrophobic chemical pollutants ...
    • Undersøkelse av reaksjonsmekanismer for OMEbrennstoff for bruk til implementering i 3D-CFD simulering av forbrenning 

      Hovden, Sindre Løver (Master thesis, 2019-06-28)
      Oxymetylene etere (OME) er brennstoff som brenner så og si uten utslipp av sot. Disse syntetisk skapte brennstoffene kan spille en viktig rolle i diesel miksen en dag, og kanskje til og med et surrogat for diesel. Brennstoffet ...
    • Unfrozen Skewed Turbulence for Wind Loading on Structures 

      Cheynet, Etienne; Daniotti, Nicolo; Jakobsen, Jasna Bogunovic; Snæbjørnsson, Jonas Thor; Wang, Jungao (Journal article; Peer reviewed, 2022)
      The paper introduces an algorithm to generate a three-variate four-dimensional wind turbulence field suited for yawed wind dynamic load simulation. At large yaw angles, a relaxation of Taylor’s hypothesis of frozen turbulence ...
    • A uniform, quality controlled Surface Ocean CO2 Atlas (SOCAT) 

      Pfeil, Benjamin; Olsen, Are; Bakker, D. C. E.; Hankin, S.; Koyuk, H.; Kozyr, A.; Malczyk, J.; Manke, A.; Metzl, N.; Sabine, C. L.; Akl, J.; Alin, S. R.; Bates, N.; Bellerby, Richard; Borges, A.; Boutin, J.; Brown, P. J.; Cai, W.-J.; Chavez, F. P.; Chen, A.; Cosca, C.; Fassbender, A.; Feely, R. A.; González-Dávila, M.; Goyet, C.; Hales, B.; Hardman-Mountford, N.; Heinze, Christoph; Hood, M.; Hoppema, M.; Hunt, C. W.; Hydes, D.; Ishii, M.; Johannessen, Truls; Jones, S. D.; Key, R. M.; Körtzinger, A.; Landschützer, P.; Lauvset, Siv Kari; Lefèvre, N.; Lenton, A.; Lourantou, A.; Merlivat, L.; Midorikawa, T.; Mintrop, L.; Miyazaki, C.; Murata, A.; Nakadate, A.; Nakano, Y.; Nakaoka, S.; Nojiri, Y.; Omar, Abdirahman; Padin, X. A.; Park, H.; Paterson, K.; Perez, F. F.; Pierrot, D.; Poisson, A.; Rios, A.F.; Santana-Casiano, J. M.; Salisbury, J.; Sarma, V. V. S. S.; Schlitzer, R.; Schneider, B.; Schuster, U.; Sieger, R.; Skjelvan, Ingunn; Steinhoff, T.; Suzuki, T.; Takahashi, T.; Tedesco, K.; Telszewski, M.; Thomas, H.; Tilbrook, B.; Tjiputra, Jerry; Vandemark, D.; Veness, T.; Wanninkhof, R.; Watson, A. J.; Weiss, R.; Wong, C.S.; Yoshikawa-Inoue, H. (Peer reviewed; Journal article, 2013)
      A well-documented, publicly available, global data set of surface ocean carbon dioxide (CO2) parameters has been called for by international groups for nearly two decades. The Surface Ocean CO2 Atlas (SOCAT) project was ...