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Bergen Open Research Archive

Browsing Nansen Environmental and Remote Sensing Center (NERSC) by Issue Date

Bergen Open Research Archive

Browsing Nansen Environmental and Remote Sensing Center (NERSC) by Issue Date

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  • Langehaug, Helene Reinertsen; Rhines, Peter B.; Eldevik, Tor; Mignot, Juliette; Lohmann, Katja (Journal article, American Geophysical Union, 2012-11)
    The warm and saline Subtropical Water carried by the North Atlantic Current undergoes substantial transformation on its way to higher latitudes as heat is released from ocean to atmosphere. The geographical distribution ...
  • Langehaug, Helene Reinertsen; Falck, Eva (Journal article, Elsevier, 2012-04)
    The Fram Strait is the only deep connection between the Arctic Ocean and the Nordic Seas (Greenland, Iceland, and Norwegian Seas), with a sill depth of approximately 2600 m. Consequently, observations from this area ...
  • Godø, Olav Rune; Samuelsen, Annette; Macaulay, Gavin J.; Patel, Ruben; Hjøllo, Solfrid Sætre; Horne, John; Kaartvedt, Stein; Johannessen, Johnny A. (Peer reviewed; Journal article, Public Library of Science, 2012-01-17)
    Mesoscale eddies stimulate biological production in the ocean, but knowledge of energy transfers to higher trophic levels within eddies remains fragmented and not quantified. Increasing the knowledge base is constrained ...
  • Langehaug, Helene Reinertsen; Medhaug, Iselin; Eldevik, Tor; Otterå, Odd Helge (Journal article, American Meteorological Society, 2012)
    In the present study we investigate the decadal variability in the strength and shape of the Subpolar Gyre (SPG) in a 600-year pre-industrial simulation using the Bergen Climate Model. The atmospheric influence on the ...
  • Langehaug, Helene Reinertsen (Doctoral thesis, The University of Bergen, 2011-12-09)
    Ocean heat transport and associated heat loss to the atmosphere contributes significantly to the anomalously mild climate of northwestern Europe and its variability. In this thesis, the circulation and transformation of ...
  • Johannessen, Ola M.; Miles, Martin W. (Peer reviewed; Journal article, Springer, 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 ...
  • Kouznetsov, Rostislav D.; Zilitinkevich, Sergej S. (Peer reviewed; Journal article, Springer, 2010-05-12)
    Observations of the dependence of the dimensionless wind speed gradient φm as a function of the Monin–Obukhov stability parameter z/Lo under strong stability diverge from results of large-eddy simulation (LES) modelling. ...
  • Smedsrud, Lars Henrik; Ingvaldsen, Randi; Nilsen, Jan Even Øie; Skagseth, Øystein (Journal article, Copernicus Publications, 2010-01-11)
    A column model is set up for the Barents Sea to explore sensitivity of surface fluxes and heat storage from varying ocean heat transport. Mean monthly ocean transport and atmospheric forcing are synthesised and force the ...
  • Chen, Lin-Ling; Johannessen, Ola M.; Khvorostovsky, Kirill; Wang, Huijun (Journal article, Institute of atmospheric physics, Chinese academy of sciences, Science press, 2009-11-16)
  • Counillon, François; Sakov, Pavel; Bertino, Laurent (Journal article, Copernicus Publications on behalf of the European Geosciences Union, 2009-10-01)
    Data assimilation methods often use an ensemble to represent the background error covariance. Two approaches are commonly used; a simple one with a static ensemble, or a more advanced one with a dynamic ensemble. The latter ...
  • Milutinović, Svetlana; Behrenfeld, Michael J.; Johannessen, Johnny A.; Johannessen, Truls (Peer reviewed; Journal article, American Geophysical Union, 2009-10-01)
    Mixed layer depth (MLD) has long been recognized as having an important influence on underwater light budget and, thus, net primary productivity (NPP) of phytoplankton. The depth- and wavelength-integrated carbon-based ...
  • Breivik, Lars-Anders; Carrieres, Tom; Eastwood, Steinar; Fleming, Andrew; Girard-Ardhuin, Fanny; Karvonen, Juha; Kwok, Ron; Meier, Walter N.; Mäkynen, Marko; Pedersen, Leif Toudal; Sandven, Stein; Similä, Markku; Tonboe, Rasmus (Conference object, 2009-09)
  • Hernandez, F.; Bertino, Laurent; Brassington, Gary; Chassignet, E.; Cummings, James; Davidson, Fraser; Drévillon, M.; Garric, Gilles; Kamachi, Masafumi; Lellouche, J.-M.; Mahdon, R.; Martin, Matthew J.; Ratsimandresy, A.; Regnier, C. (Journal article, The Oceanography Society, 2009-09)
    During the Global Ocean Data Assimilation Experiment (GODAE), seven international operational centers participated in a dedicated modeling system intercomparison exercise from February to April 2008. The objectives were: ...
  • Cummings, James; Bertino, Laurent; Brasseur, Pierre; Fukumori, Ichiro; Kamachi, Masafumi; Martin, Matthew J.; Mogensen, Kristian; Oke, Peter; Testut, Charles Emmanuel; Verron, Jaques; Weaver, Anthony (Journal article, The Oceanography Society, 2009-09)
    Ocean data assimilation has matured to the point that observations are now routinely combined with model forecasts to produce a variety of ocean products. Approaches to ocean data assimilation vary widely both in terms ...
  • Backeberg, Bjørn C.; Bertino, Laurent; Johannessen, Johnny A. (Journal article, Copernicus Publications on behalf of the European Geosciences Union, 2009-06-02)
    A 4th order advection scheme is applied in a nested eddy-resolving Hybrid Coordinate Ocean Model (HYCOM) of the greater Agulhas Current system for the purpose of testing advanced numerics as a means for improving the model ...
  • Gierach, Michelle M.; Subrahmanyam, Bulusu; Samuelsen, Annette; Ueyoshi, Kyozo (Journal article, American Geophysical Union, 2009-04-03)
    This was the first study to analyze phytoplankton and zooplankton community size structure during hurricane passage. A three-dimensional biophysical model was used to assess ecosystem dynamics, plankton biomass, and ...
  • Korosov, A. A.; Pozdnyakov, D. V.; Folkestad, Are; Pettersson, Lasse H.; Sørensen, Kai; Shuchman, Robert A. (Journal article, Molecular Diversity Preservation International (MDPI), 2009-03-10)
    An advanced operational semi-empirical algorithm for processing satellite remote sensing data in the visible region is described. Based on the Levenberg-Marquardt multivariate optimization procedure, the algorithm is ...
  • Hansen, Cecilie; Samuelsen, Annette (Journal article, Elsevier, 2009)
    The purpose of this paper is to investigate the influence of horizontal grid resolution in a physical model on an embedded primary production model. The area for the experiment was along the west coast of Norway, from 60◦N ...
  • Johannessen, Johnny A.; Chapron, B.; Collard, F.; Kudryavtsev, Vladimir; Mouchet, A.; Akimov, D.; Dagestad, Knut-Frode (Peer reviewed; Journal article, American Geophysical Union, 2008-11-29)
    Previous analysis of Advanced Synthetic Aperture Radar (ASAR) signals collected by ESA’s Envisat has demonstrated a very valuable source of high-resolution information, namely, the line-of-sight velocity of the moving ...
  • Gao, Yongqi; Yu, Lei (Journal article, Institute of Atmospheric Physics, Chinese Academy of Sciences, 2008-11-16)
    The subpolar gyre index (SPG), derived from the analysis of sea surface height (SSH), is proposed to be a potential indicator for the North Atlantic Meridional Overturning Circulation (AMOC) based on observation as well ...

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