BORA - UiB

Bergen Open Research Archive

Browsing by Author "Johannessen, Truls"

Bergen Open Research Archive

Browsing by Author "Johannessen, Truls"

Sort by: Order: Results:

  • Anderson, Leif G.; Drange, Helge; Chierici, M.; Fransson, A.; Johannessen, Truls; Skjelvan, Ingunn; Rey, Francisco (Journal article; Peer reviewed, Blackwell, 2000-07)
    Measurements of nitrate and the carbonate system parameters performed mainly from 1993 to 1997 have been used to estimate the evolution of the concentration fields over the year in the surface and underlying waters of ...
  • Omar, Abdirahman M.; Johannessen, Truls; Kaltin, Staffan; Olsen, Are (Peer reviewed; Journal article, American Geophysical Union., 2003-12-26)
    We evaluate the change of surface water CO2 partial pressure ( pCO2 sw) in the Barents Sea (BS) between 1967 and 2000–2001. We use temperature (T) data collected during a survey in the BS in 1967 and a relationship between ...
  • Hvidevold, Hilde Kristine; Alendal, Guttorm; Johannessen, Truls; Mannseth, Trond (Journal article, Elsevier, 2013)
    This paper assesses how parameter uncertainties in the model for rise velocity of CO2 droplets in the ocean cause uncertainties in their rise and dissolution in marine waters. The parameter uncertainties in the rise velocity ...
  • Brewer, Peter G.; Peltzer, Edward T.; Walz, Peter; Aya, Izuo; Yamane, Kenji; Kojima, Ryuji; Nakajima, Yasuharu; Nakayama, Noriko; Haugan, Peter Mosby; Johannessen, Truls (Journal article; Peer reviewed, Sears Foundation for Marine Research, 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 ...
  • Olsen, Are; Wanninkhof, Rik; Triñanes, Joaquin; Johannessen, Truls (Journal article; Peer reviewed, Blackwell, 2005)
    The lack of a firm relationship between wind speed (U10) and gas transfer velocity (k) is considered to be one of the factors that hinders accurate quantification of interannual variations of ocean–atmosphere CO2 fluxes. ...
  • Olsen, Are; Bellerby, Richard G. J.; Johannessen, Truls; Omar, Abdirahman M.; Skjelvan, Ingunn (Journal article; Peer reviewed, Elsevier, 2003)
    Gridded fields of sea surface temperature (SST), sea level pressure (SLP), and wind speed were used in combination with data for the atmospheric mole fraction of CO2 and an empirical relationship between measured values ...
  • Olsson, K. Anders; Jeansson, Emil; Anderson, Leif G.; Hansen, Bogi; Eldevik, Tor; Kristiansen, Regin; Messias, Marie-José; Johannessen, Truls; Watson, Andrew J. (Journal article; Peer reviewed, Elsevier, 2005-02)
    The Faroe Bank Channel is the deepest passage for dense water leaving the Nordic Seas into the North Atlantic. The contribution to this part of the Greenland-Scotland Overflow by intermediate water from the Greenland ...
  • Olsen, Are; Abdirahman, Omar M.; Bellerby, Richard G. J.; Johannessen, Truls; Ninnemann, Ulysses Silas; Brown, Kelly R.; Olsson, K. Anders; Olafsson, Jon; Nondal, Gisle; Kivimäe, Caroline; Kringstad, Solveig; Neill, Craig; Olafsdottir, Solveig (Journal article; Peer reviewed, AGU, 2006-09-29)
    This study evaluates the anthropogenic changes of CO2 (∆Cant) and δ13C (∆δ13Cant) in the Nordic seas, the northern limb of the Atlantic Meridional Overturning Circulation, that took place between 1981 and 2002/03. The ...
  • Haugan, Peter Mosby; Brewer, Peter G.; Peltzer, Edward T.; Walz, Peter; Aya, Izuo; Yamane, Kenji; Kojima, Ryuji; Nakajima, Yasuharu; Nakayama, Noriko; Hove, Joakim; Johannessen, Truls; Bellerby, Richard G. J.; Alendal, Guttorm (Journal article, Elsevier, 2005)
    Observations from small-scale (20 to 90 litres) CO2 experiments conducted off the coast of California at 684 m depth and at 3942 m depth are discussed. In both experiments, when the seawater velocity was sufficiently strong, ...
  • Olsen, Are; Johannessen, Truls; Rey, Francisco (Journal article, Taylor & Francis, 2003-12)
    Analysis of data obtained by the Institute of Marine Research, Norway, at their regular surveys of the Fugløya-Bjørnøya section, between the northern tip of Norway and Bear Island, has allowed for an identification of the ...
  • Botnen, Helle Augdal; Omar, Abdirahman; Aavatsmark, Ivar; Alendal, Guttorm; Johannessen, Truls (Journal article, Elsevier, 2013)
    Span and Wagner equation of state (SW EOS) have been used to investigate changes in the thermodynamic properties of CO2 during a depressurization process from a pipeline into marine environment. The process is assumed to ...
  • 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 ...
  • Aker, Eyvind; Bjørnarå, Tore Ingvald; Braathen, Alvar; Brandvoll, Øyvind; Dahle, Helge K.; Nordbotten, Jan Martin; Aagaard, Per; Hellevang, Helge; Alemu, Binyam Lema; Pham, Van Thi Hai; Johansen, Harald; Wangen, Magnus; Nøttvedt, Arvid; Aavatsmark, Ivar; Johannessen, Truls; Durand, Dominique (Journal article, Elsevier, 2011)
    SUCCESS is a Center for Environmental Energy Research in Norway and performs research related to geological storage of CO2 in the subsurface. The SUCCESS centre is established by the Research Council of Norway together ...

Search BORA

Browse

My Account