Now showing items 266-285 of 491

    • Near-inertial mixing in the central Arctic Ocean 

      Fer, Ilker (American Meteorological Society, 2014-08)
      Observations were made in April 2007 of horizontal currents, hydrography, and shear microstructure in the upper 500 m from a drifting ice camp in the central Arctic Ocean. An approximately 4-day-long time series, collected ...
      Journal article
    • New approaches to investigate the influence of orographic and dynamic blocking on large-scale atmospheric flow 

      Spensberger, Clemens (The University of Bergen, 2015-01-15)
      Orographic and dynamic blocks have a profound influence on both weather and climate. The persistence of dynamic blocks can, for example, lead to the build-up of extreme temperature anomalies or droughts. In addition, ...
      Doctoral thesis
    • A new global interior ocean mapped climatology: the 1° ×  1° GLODAP version 2 

      Lauvset, Siv Kari; Key, Robert M.; Olsen, Are; van Heuven, Steven; Velo, Antón; Lin, Xiaohua; Schirnick, Carsten; Kozyr, Alex; Tanhua, Toste; Hoppema, Mario; Jutterström, Sara; Steinfeldt, Reiner; Jeansson, Emil; Ishii, Masao; Pérez, Fiz F.; Suzuki, Toru; Watelet, Sylvain (Copernicus Publications, 2016-08-15)
      We present a mapped climatology (GLODAPv2.2016b) of ocean biogeochemical variables based on the new GLODAP version 2 data product (Olsen et al., 2016; Key et al., 2015), which covers all ocean basins over the years 1972 ...
      Journal article
    • New layer thickness parameterization of diffusive convection in the ocean 

      Zhou, Sheng-Qi; Lu, Yuan-Zheng; Song, Xue-Long; Fer, Ilker (Elsevier, 2016-03)
      In the present study, a new parameterization is proposed to describe the convecting layer thickness in diffusive convection. By using in situ observational data of diffusive convection in the lakes and oceans, a wide range ...
      Journal article
    • A New Look at Deformation as a Diagnostic for Large-Scale Flow 

      Spensberger, Clemens; Spengler, Thomas (American Meteorological Society, 2014-11)
      Deformation plays a key role in atmospheric dynamics because it provides a dynamical measure of the interaction between different scales, such as in frontogenesis. A climatology of deformation constructed from Interim ECMWF ...
      Journal article
    • North Atlantic 20th century multidecadal variability in coupled climate models: sea surface temperature and ocean overturning circulation 

      Medhaug, Iselin; Furevik, Tore (The University of Bergen, 2011-06-06)
      Output from a total of 24 state-of-the-art Atmosphere-Ocean General Circulation Models is analyzed. The models were integrated with observed forcing for the period 1850–2000 as part of the Intergovernmental Panel on ...
      Peer reviewedJournal article
    • North Atlantic multi-decadal variability - mechanisms and predictability 

      Keenlyside, Noel; Ba, Jin; Mecking, Jennifer V.; Omrani, Nour-Eddine; Latif, Mojib; Zhang, Rong; Msadek, Rym (World Scientific Publishing, 2015-10)
      The North Atlantic Ocean undergoes pronounced basin-wide, multi-decadal variations. The corresponding fluctuations in sea surface temperature (SST) have become known as the Atlantic Multi-decadal Oscillation (AMO) or ...
      Chapter
    • North Atlantic multidecadal variability in coupled climate models - Mechanisms and responses 

      Medhaug, Iselin (The University of Bergen, 2011-05-06)
      Global atmosphere-ocean general circulation models have been used to investigate mechanisms controlling the North Atlantic low-frequency variability, with the focus on the Atlantic Meridional Overturning Circulation, the ...
      Doctoral thesis
    • The North Atlantic Oscillation and greenhouse-gas forcing 

      Kuzmina, Svetlana I.; Bengtsson, Lennart; Johannessen, Ola M.; Drange, Helge; Bobylev, Leonid P.; Miles, Martin W. (American Geophysical Union, 2005-02-17)
      The results of 12 coupled climate models participating in the Coupled Model Intercomparison Project (CMIP2) are compared together with observational data in order to investigate: 1) How the current generation of climate ...
      Journal articlePeer reviewed
    • North Atlantic storm track changes during the Last Glacial Maximum recorded by Alpine speleothems 

      Luetscher, Marc; Boch, Ronny; Sodemann, Harald; Spötl, Christoph; Cheng, Hai; Edwards, Roger Lawrence; Frisia, Silvia; Hof, Florian; Müller, Wolfgang A. (Nature Publishing Group, 2015-02-27)
      The European Alps are an effective barrier for meridional moisture transport and are thus uniquely placed to record shifts in the North Atlantic storm track pattern associated with the waxing and waning of Late-Pleistocene ...
      Journal article
    • The Northeast Greenland shelf as a potential habitat for the Northeast Arctic cod 

      Strand, Kjersti Opstad; Sundby, Svein; Albretsen, Jon; Vikebø, Frode Bendiksen (Frontiers, 2017-09-26)
      Observations (1978–1991) of distributions of pelagic juvenile Northeast Arctic cod (Gadus morhua L.) show that up to 1/3 of the year class are dispersed off the continental shelf and into the deep Norwegian Sea while on ...
      Journal article
    • The northern Barents Sea during 1970–2016: From seabed to surface in the Arctic warming hotspot 

      Lind, Sigrid (The University of Bergen, 2018-05-09)
      Global warming is amplified in the cold and white Arctic, where strong positive feedback mechanisms associated with, e.g., changes in surface conditions and the vertical structure of the Arctic atmosphere enhance the ...
      Doctoral thesis
    • Northern Hemisphere storminess in the Norwegian Earth System Model (NorESM1-M) 

      Knudsen, Erlend Moster; Walsh, J. E. (Copernicus Publications, 2014-12-16)
      Metrics of storm activity in Northern Hemisphere high- and midlatitudes are evaluated from historical output and future projections by the Norwegian Earth System Model (NorESM1-M) coupled global climate model. The European ...
      Journal article
    • Novel Tools for Research and Education in Seismology 

      Boulaenko, Mikhail E. (The University of Bergen, 2002)
      It’s first part describes the noise performances of an inexpensive instrument for seismic data collection; the geophone-based seismograph used in the SEIS-SCHOOL network and now called Cossac Ranger. The analysis of its ...
      Master thesis
    • A Numerical approach for Ship Energy Analysis 

      Kopperstad, Jørgen (The University of Bergen, 2018-06-20)
      This master´s thesis has focused on energy analysis of ships and ship designs by developing a tool and a method for numerical analysis for evaluation of emissions, efficiency and costs. The overall focus has been on ...
      Master thesis
    • A numerical estimate of the tidal energy in the Lofoten area 

      Dugstad, Johannes Sandanger (The University of Bergen, 2014-05-28)
      In the following study the energy potential associated with tidal energy will be investigated. A depth integrated model based on the Navier Stokes equations and the continuity equation will be applied to simulate the ...
      Master thesis
    • Numerical modelling of the sub-surface melting of marine-terminating glaciers in Arctic fjords 

      Kalhagen, Kjersti (The University of Bergen, 2015-06-01)
      Submarine melting of glaciers terminating in fjords is likely to be of high importance regarding the total ice loss from ice sheets and ice caps and the resulting addition of freshwater to the ocean. Submarine melting ...
      Master thesis
    • Numerical sensitivity studies on the variability of climate-relevant processes in the Barents Sea 

      Harms, I. H.; Schrum, Corinna; Hatten, K. (American Geophysical Union, 2005-06-03)
      The Barents Sea is a key region in the North Atlantic/Arctic Ocean climate system because of the intense ocean-atmosphere heat exchange and the formation of sea ice. The latter process is connected with salt input, so-called ...
      Journal articlePeer reviewed
    • Numerical simulations of surface winds and precipitation in Iceland – Die zweite Aufgabe der theoretischen Meteorologie 

      Rögnvaldsson, Ólafur (The University of Bergen, 2013-02-08)
      Doctoral thesis
    • Numerical Study of a Microturbine Combustor 

      Møller-Pedersen, Lars (The University of Bergen, 2018-06-21)
      Microturbines are small-scale gas turbine engines with a power range of 20 to 500 kW, typically used for off-grid power generation or mechanical drive scenarios. The technology also shows potential in combination with ...
      Master thesis