Now showing items 781-800 of 870

    • Towards quantifying the increasing role of oceanic heat in sea ice loss in the new Arctic 

      Carmack, Eddy; Polyakov, Igor V.; Padman, Laurie; Fer, Ilker; Hunke, Elizabeth Clare; Hutchings, Jennifer J.; Jackson, Jennifer M.; Kelley, Daǹ E.; Kwok, Ronald; Layton, Chantelle; Melling, Humfrey; Perovich, Donald K.; Persson, Ola G.; Ruddick, Barry; Timmermans, Mary Louise E.; Toole, John M.; Ross, Tetjana; Vavrus, Steve J.; Winsor, Peter R. (Peer reviewed; Journal article, 2015)
      The loss of Arctic sea ice has emerged as a leading signal of global warming. This, together with acknowledged impacts on other components of the Earth system, has led to the term “the new Arctic.” Global coupled climate ...
    • Tracer-derived transit time of the waters in the eastern Nordic Seas 

      Gao, Yongqi; Drange, Helge; Bentsen, Mats; Johannessen, Ola M. (Peer reviewed; Journal article, 2005-08-25)
      The spatial-temporal distribution of the anthropogenic radionuclide 137Cs originating from nuclear bomb testing and the Sellafield reprocessing plant in the Irish Sea is simulated using a global version of the Miami Isopycnic ...
    • Tracing the Imprint of River Runoff Variability on Arctic Water Mass Transformation 

      Lambert, Erwin; Nummelin, Aleksi; Pemberton, Per; Ilicak, Mehmet (Peer reviewed; Journal article, 2019-01-14)
      The Arctic Ocean receives a net freshwater input from land and from the atmosphere. This flux of freshwater, along with net surface heat loss, acts to transform the water mass properties of inflowing Atlantic and Pacific ...
    • Training of supermodels - in the context of weather and climate forecasting 

      Schevenhoven, Francine (Doctoral thesis, 2021-02-08)
      Given a set of imperfect weather or climate models, predictions can be improved by combining the models dynamically into a so called `supermodel'. The models are optimally combined to compensate their individual errors. ...
    • Transient response of the Atlantic Meridional Overturning Circulation to enhanced freshwater input to the Nordic Seas–Arctic Ocean in the Bergen Climate Model 

      Otterå, Odd Helge; Drange, Helge; Bentsen, Mats; Kvamstø, Nils Gunnar; Jiang, Dabang (Tellus A;56(4), Journal article, 2004-07-09)
      The transient response of the climate system to anomalously large freshwater input to the high latitude seas is examined using the newly developed Bergen Climate Model. A 150-yr twin-experiment has been carried out, ...
    • Transitioning remote Arctic settlements to renewable energy systems – A modelling study of Longyearbyen, Svalbard 

      Ringkjøb, Hans-Kristian; Haugan, Peter M.; Nybø, Astrid (Journal article; Peer reviewed, 2020)
      As transitioning away from fossil fuels to renewable energy sources comes on the agenda for a range of energy systems, energy modelling tools can provide useful insights. If large parts of the energy system turns out to ...
    • Transport of inorganic carbon through, within, and below the ocean surface 

      Lauvset, Siv Kari (Doctoral thesis, 2011-03-11)
      Human emissions of CO2 through the burning of fossil fuel, cement production, and land use change have increased the atmospheric CO2 concentration by 39 % since 1750. Without the large uptake of anthropogenic CO2 by the ...
    • Transport Upscaling in Porous Media 

      Nedreli, Anette Cathrine (Master thesis, 2014-06-02)
      Numerical models are important for modeling what happens in porous media. In this thesis we will simulate the heat transport in geothermal reservoirs. Because these reservoirs are usually quite large, we will make a model ...
    • Trends and drivers in global surface ocean pH over the past 3 decades 

      Lauvset, Siv Kari; Gruber, Nicolas; Landschützer, Peter; Olsen, Are; Tjiputra, Jerry (Peer reviewed; Journal article, 2015-03-02)
      We report global long-term trends in surface ocean pH using a new pH data set computed by combining fCO2 observations from the Surface Ocean CO2 Atlas (SOCAT) version 2 with surface alkalinity estimates based on temperature ...
    • Trends in extreme precipitation and the influence by meteorological parameters following the RCP8.5 scenario over 2 catchments in India 

      Soldal, Ingri Halland (Master thesis, 2015-06-02)
      The Historical1 simulation (1960-2000) and the RCP8.5 scenario (2060-2100) from the NorESM are used to investigate trends in extreme precipitation, as well as the impact from vertical velocity, specific humidity, divergence ...
    • Trends of Ocean Acidification and pCO2 in the Northern North Sea, 2003-2015 

      Omar, Abdirahman; Thomas, Helmuth; Olsen, Are; Becker, Meike; Skjelvan, Ingunn; Reverdin, Gilles (Peer reviewed; Journal article, 2019-10-29)
      For continental shelf regions, the long‐term trend in sea surface carbon dioxide (CO2) partial pressure (pCO2) and rates of ocean acidification are not accurately known. Here, we investigate the decadal trend of observed ...
    • The tropical Atlantic observing system 

      Foltź, Gregory R.; Brandt, Peter; Richter, Ingo; Rodriguez-fonseca, Belen; Hernandez, Fabrice; Dengler, Marcus; Rodrigues, Regina R.; Schmidt, Jörn O.; Yu, Lisan; Lefevre, Nathalie; Da Cunha, Leticia Cotrim; McPhaden, Michael J.; Araujo Filho, Moacyr C.; Karstensen, Johannes; Hahn, Johannes; Martín-Rey, Marta; Patricola, Christina M.; Poli, Paul; Zuidema, Paquita; Hummels, Rebecca; Perez, Renellys C.; Hatje, Vanessa; Lübbecke, Joke; Polo, Irene; Lumpkin, Rick; Bourles, Bernard; Asuquo, Francis E.; Lehodey, Patrick; Conchon, Anna; Chang, Ping; Dandin, Philippe; Schmid, Claudia; Sutton, Adrienne J.; Giordani, Herve; Xue, Yan; Illig, Serena; Losada, Teresa; Grodsky, Semyon; Gasparin, Florent; Lee, Tong; Mohino, Elsa; Nobre, Paulo; Wanninkhof, Rik; Keenlyside, Noel; Garcon, Veronique; Sánchez-Gómez, Emilia; Nnamchi, Hyacinth C.; Drévillon, Marie; Storto, Andrea; Remy, Elisabeth; Lazar, Alban; Speich, Sabrina; Goes, Marlos P.; Dorrington, Tarquin; Johns, William E.; Moum, James N.; Robinson, Carol; Perruche, Coralie; Souza, Ronald B.; Gaye, Amadou; López-Parages, Jorge; Monerie, Paul-Arthur; Castellanos, Paola; Benson, Nsikak U.; Hounkonnou, Mahouton N.; Duhá, Janice T.; Laxenaire, Rémi; Reul, Nicolas (Peer reviewed; Journal article, 2019-05-10)
      The tropical Atlantic is home to multiple coupled climate variations covering a wide range of timescales and impacting societally relevant phenomena such as continental rainfall, Atlantic hurricane activity, oceanic ...
    • Tropical Atlantic variability: Observations and modeling 

      Cabos, William; de la Vara, Alba; Koseki, Shunya (Peer reviewed; Journal article, 2019-08-27)
      We review the state-of-the-art knowledge of Tropical Atlantic Variability (TAV). A well-developed observing system and sustained effort of the climate modeling community have improved our understanding of TAV. It is dominated ...
    • Tuning the Diet of North-East Arctic Cod in the Barents Sea - An Exploration with the end-to-end Model ATLANTIS 

      Jähkel, Anne (Master thesis, 2013-06-03)
      This thesis explores the feeding relationships of Atlantic cod (Gadus morhua) on its major prey species within the Barents Sea using the newly developed Atlantis model for the region. Atlantis is an end-to-end model designed ...
    • Turbulence and heat exchange under ice 

      Sirevaag, Anders (Master thesis, 2003)
      Turbulent fluxes of heat and salt were measured under sea ice at four different locations around Spitsbergen. In Kongsfjorden on West Spitsbergen additional measurements of heat fluxes in the ice and in the atmosphere were ...
    • Turbulence Measurements in Shallow Water from a Subsurface Moored Moving Platform 

      Paskyabi, Mostafa Bakhoday; Fer, Ilker (Peer reviewed; Journal article, 2013)
      Preliminary results are presented from a moored, autonomous instrument measuring the upper ocean turbulent dissipation rate together with the surface gravity wave field. Observations are made in the area approximately 30 ...
    • Turbulence structure in the upper ocean: a comparative study of observations and modeling 

      Paskyabi, Mostafa Bakhoday; Fer, Ilker (Peer reviewed; Journal article, 2014-04)
      Observations of turbulent dissipation rates measured by two independent instruments are compared with numerical model runs to investigate the injection of turbulence generated by sea surface gravity waves. The nearsurface ...
    • 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 ...