Now showing items 1-5 of 5

  • Coupled Al-Si geochemistry in an ocean general circulation model: A tool for the validation of oceanic dust deposition fields? 

    Gehlen, M.; Heinze, Christoph; Maier-Reimer, E.; Measures, C. I. (American Geophysical Union, 2003-03-19)
    We introduced the marine cycle of Al into a geochemical ocean general circulation model in order to assess the potential of modeled surface ocean dissolved Al as a tracer for dust input to the world ocean. The geochemical ...
    Journal article
  • Current systematic carbon-cycle observations and the need for implementing a policy-relevant carbon observing system 

    Ciais, Philippe; Dolman, AJ; Bombelli, A; Duren, R; Peregon, A; Rayner, PJ; Miller, C; Gobron, N; Kinderman, G; Marland, G; Gruber, N; Chevallier, F; Andres, RJ; Balsamo, G; Bopp, L; Breon, F-M; Broquet, G; Dargaville, R; Battin, TJ; Borges, A; Bovensmann, H; Buchwitz, M; Butler, J; Canadell, JG; Cook, RB; Defries, R; Engelen, R; Gurney, KR; Heinze, Christoph; Heimann, M; Held, A; Henry, M; Law, B; Luyssaert, S; Miller, J; Moriyama, T; Moulin, C; Myneni, RB; Nussli, C; Obersteiner, M; Ojima, D; Pan, Y; Paris, J-D; Piao, SL; Poulter, B; Plummer, S; Quegan, S; Raymond, P; Reichstein, M; Rivier, L; Sabine, C; Schimel, D; Tarasova, O; Valentini, R; Wang, R; Van, Der,Werf,G; Wickland, D; Williams, M; Zehner, C (Copernicus Publications, 2014-07-03)
    A globally integrated carbon observation and analysis system is needed to improve the fundamental understanding of the global carbon cycle, to improve our ability to project future changes, and to verify the effectiveness ...
    Journal article
  • Long-term surface pCO2 trends from observations and models 

    Tjiputra, Jerry; Olsen, Are; Bopp, Laurent; Lenton, Andrew; Pfeil, Benjamin; Roy, Tilla; Segschneider, Joachim; Totterdell, Ian; Heinze, Christoph (Co-Action PublishingThe International Meteorological Institute in Stockholm, 2014-05-19)
    We estimate regional long-term surface ocean pCO2 growth rates using all available underway and bottled biogeochemistry data collected over the past four decades. These observed regional trends are compared with those ...
    Journal article
  • On the potential of 230Th, 231Pa, and 10Be for marine rain ratio determinations: A modeling study 

    Heinze, Christoph; Gehlen, M.; Land, C. (American Geophysical Union, 2006-06-16)
    The global distributions of the radionuclides 230Th, 231Pa, and 10Be are simulated with a biogeochemical ocean general circulation model. Sensitivity experiments for changes in the composition of the particle composition ...
    Journal articlePeer reviewed
  • Sensitivity of the marine biospheric Si cycle for biogeochemical parameter variations 

    Heinze, Christoph; Hupe, A.; Maier-Reimer, E.; Dittert, N.; Ragueneau, O. (American Geophysical Union, 2003-09-06)
    A systematic quantitative assessment of the marine silicon cycle is presented, based on a prognostic coupled water column-sediment global biogeochemical ocean general circulation model (HAMOCC). The resulting tracer ...
    Peer reviewedJournal article