Contact information



Email: joachim.segschneider(at)

Phone: +49-40-41173-196

Fax: +49-40-41173-298

Room no. N229


Mailing Address

Max Planck Institute for Meteorology

Bundesstr. 53

D-20146 Hamburg




Ocean in the Earth System


Research Group

Marine biogeochemistry

Research interests

  • Estimating future oceanic uptake of anthropogenic CO2
  • Earth System feedbacks between climate and the carbon cycle
  • Remote input of nutrients to the ocean (e.g., iron and anthropogenic nitrogen)
  • Impact of volcanic eruptions on the marine carbon cycle
  • Past variations of climate and the carbon cycle

Current projects

  • EU FP7 IP COMBINE: Comprehensive modelling of the Earth System for better climate predictions and projections
  • EU FP7 CARBOCHANGE: Changes in carbon uptake and emissions by oceans in a changing climate
  • BMBF WTZ Projekt CARIMA : Natürliche versus anthropogene Steuerungsfaktoren spätquartärer Monsunvariabilität in Zentralasien aufgezeichnet in marinen Sedimenten


C. Le Quéré, G.P. Peters, R. J. Andres, T. Boden, P. Ciais, P. Friedlingstein, R. A. Houghton, G. Marland, R. Moriarty, S. Sitch, P. Tans, A. Arneth, A. Arvanitis, D. C. E. Bakker, L. Bopp, J. G. Canadell, L. P. Chini, S. C. Doney, A. Harper, I. Harris, J. I. House, A. K. Jain, S. D. Jones, E. Kato, R. F. Keeling, K. Klein Goldewijk, A. Körtzinger, C. Koven, N. Lefèvre, A. Omar, T. Ono, G.-H. Park, B. Pfeil, B. Poulter, M. R. Raupach, P. Regnier, C. Rödenbeck, S. Saito, J. Schwinger, J. Segschneider, B. D. Stocker, B. Tilbrook, S. van Heuven, N. Viovy, R. Wanninkhof, A. Wiltshire, S. Zaehle, C. Yue, 2013 Global Carbon Budget 2013. Earth System Science Data Discuss 11/2013; 6:689-760. DOI:doi:10.5194/essdd-6-689-2013


W. Koeve, O. Duteil, A. Oschlies, P. Kähler, J. Segschneider, 2013. Evaluating CaCO3-cycle modules in coupled global biogeochemical ocean models. Geoscientific Model Development Discussions 11/2013; 6:6117-6155. DOI:10.5194/gmdd-6-6117-2013


Segschneider, J., and J. Bendtsen, 2013. Temperature-dependent remineralization in a warming ocean increases surface pCO2 through changes in marine ecosystem composition, Glob. Biogeochem. Cycles, in press. DOI:10.1002/2013GB004684


Giorgetta, M. A., Jungclaus, J. H., Reick, C. H., Legutke, S., Brovkin, V., Crueger, T., Esch, M., Fieg, K., Glushak, K., Gayler, V., Haak, H., Hollweg, H.-D., Ilyina, T., Kinne, S., Kornblueh, L., Matei, D., Mauritsen, T., Mikolajewicz, U., Mueller, W. A., Notz, D., Raddatz, T., Rast, S., Redler, R., Roeckner, E., Schmidt, H., Schnur, R., Segschneider, J., Six, K., Stockhause, M., Wegner, J., Widmann, H., Wieners, K.-H., Claussen, M., Marotzke, J., & Stevens, B. , 2013. Climate and carbon cycle changes from 1850 to 2100 in MPI-ESM simulations for the coupled model, Journal of Advances in Modeling Earth Systems, 5, 572-597. doi:10.1002/jame.20038.


Ilyina T., Six K., Segschneider J., Maier-Reimer E., Li H., Núñez-Riboni I.: The global ocean biogeochemistry model HAMOCC: Model architecture and performance as component of the MPI-Earth System Model in different CMIP5 experimental realizations. Journal of Advances in Modeling Earth Systems, 5, 287-315, doi: 10.1002/jame.20017, 2013.


F. Joos, R. Roth, J. S. Fuglestvedt, G. P. Peters, I. G. Enting, W. von Bloh, V. Brovkin, E. J. Burke, M. Eby, N. R. Edwards, T. Friedrich, T. L. Frölicher, P. R. Halloran, P. B. Holden, C. Jones, T. Kleinen, F. Mackenzie, K. Matsumoto, M. Meinshausen, G.-K. Plattner, A. Reisinger, J. Segschneider, G. Shaffer, M. Steinacher, K. Strassmann, K. Tanaka, A. Timmermann, and A. J. Weaver, 2013. Carbon dioxide and climate impulse response functions for the computation of greenhouse gas metrics: a multi-model analysis. Atmos. Chem. Phys., 13, 2793-2825, doi:10.5194/acp-13-2793-2013 


V. Cocco, F. Joos, M. Steinacher, T. L. Frölicher, L. Bopp, J. Dunne, M. Gehlen, C. Heinze, J. Orr, A. Oschlies, B. Schneider, J. Segschneider, and J. Tjiputra, 2013. Oxygen and indicators of stress for marine life in multi-model global warming projections. Biogeosciences., 10, 1849-1868.


Segschneider, J.,  A. Beitsch, C. Timmreck, V. Brovkin, T. Ilyina, J. Jungclaus, S.J. Lorenz, K.D. Six, D. Zanchettin, 2013. Impact of an extremely large magnitude volcanic eruption on the global climate and carbon cycle estimated from ensemble Earth System Model simulations. Biogeosciences, 10(2), 669-687


Jones, C., E. Robertson, V. Arora, P. Friedlingstein, E. Shevliakova, L. Bopp, V.Brovkin, T. Hajima, E. Kato, M. Kawamiya, S. Liddicoat, K. Lindsay, C. Reick, C.Roelandt, J. Segschneider, and J. Tjiputra, 2013: 21st Century compatible CO2 emissions and airborne fraction simulated by CMIP5 Earth System models under 4 Representative Concentration Pathways. J. Climate, 26, 4398-4413. doi:10.1175/JCLI-D-12-00554.1


Kathrin M. Keller, Fortunat Joos, Christoph C. Raible, Valentina Cocco, Thomas L. Frölicher, John P. Dunne, Marion Gehlen, Laurent Bopp, James C. Orr, Jerry Tjiputra, Christoph Heinze, Joachim Segschneider, Tilla Roy, Nicolas Metzl, 2012. Variability of the ocean carbon cycle in response to the North Atlantic Oscillation. Tellus B, 64, 18738,


Duteil, O., W. Koeve, A. Oschlies, O. Aumont, D. Bianchi, L. Bopp, E. Galbraith, R. Matear, J.K. Moore, J. Sarmiento, and J. Segschneider, 2012. Preformed and regenerated phophate in ocean general circulation models: can right concentrations be wrong? Biogeosciences, 9, 1-12.


Bernard, C., H. Dürr, C. Heinze, J. Segschneider, E. Maier-Reimer, 2011. Contribution of riverine nutriens to the silicon biogeochemistry of the global ocean - a model study. Biogeosciences, 8, 552-564.


Roy, T., L. Bopp, M. Gehlen, B. Schneider, P. Cadule, T.L. Frölicher, J. Segschneider, J. Tjiputra, C. Heinze, and F. Joos, 2011. Regional impacts of climate change and atmospheric CO2 on future ocean carbon uptake: A multi-model linear feedback analysis. J. Climate, 24, 2300-2318.


J.H. Jungclaus et al. (24, incl. J. Segschneider), 2010. Climate and carbon-cycle variability over the last millennium. Climate of the Past, 6, 723-737.


Brovkin, V., S. Lorenz, J. Jungclaus, T. Raddatz, C. Reick, C. Timmreck, J. Segschneider, K. Six, 2010. Sensitivity of a coupled climate-carbon cycle model to large volcanic eruptions during the last millennium. Tellus B, 62 (5), 674 - 681.


Steinacher, M., F,. Joos, T.L. Frölicher, L. Bopp, C. Cadule, S.C. Doney, M. Gehlen, B. Schneider, and J. Segschneider, 2010. Projected 21st Century decrease in marine productivity: a multi model analysis. Biogeosciences, 7, 979-1005.


Assmann, K., M. Bentsen, J. Segschneider, and C. Heinze, 2010. An isopycnic ocean carbon cycle model. Geoscientific Model Development, 3, 143-167.


Schneider, B., L. Bopp, M. Gehlen, J. Segschneider, T. Frölicher,  F. Joos, P. Cadule, P. Friedlingstein, S.C. Doney, and M.J. Behrenfeld, 2008. Spatio temporal variability of marine primary and export production in three coupled climate carbon cycle models. Biogeosciences, 5 , 597 - 614.


Segschneider, J., B. Grieger, H.U. Keller, F. Lunkeit, E. Kirk, K. Fraedrich, A.V. Rodin, and R. Greve, 2005. Response of the intermediate complexity Mars Climate Simulator to different obliquity angles. Planetary Space Sci., 53 (6), 659-670.


Grieger, B., J. Segschneider, H.U. Keller, A. Rodin, F. Lunkeit, E. Kirk, and K. Fraedrich, 2005. Modeling Titan's Tropospheric Circulation with the Portable University Model of the Atmosphere. Adv. Space Sci., 34(8), 1650-1654.


R. Greve, R. Mahajan, J. Segschneider, and B. Grieger, 2004. Evolution of the north-polar cap of Mars. Planetary Space Sci., 52, 775-787.


Troccoli, A., M. Balmaseda, J. Segschneider, J. Vialard, D.L.T. Anderson, K. Haines, T.N. Stockdale, and F. Vitart, 2002. Salinity adjustments in the presence of temperature data assimilation. Mon. Wea. Rev., 130, 89-102.


Segschneider, J., D.L.T. Anderson, J. Vialard, M. Balmaseda, T.N. Stockdale, A. Troccoli, and K. Haines, 2001. Initialization of seasonal forecasts assimilating sea level and temperature observations. J. Climate,14, 4292-4307.


Rolinski, S., J. Segschneider, and J. Sündermann, 2001. Long-term propagation of tailings from deep-sea mining under variable conditions -Numerical simulations-. Deep-Sea Res. II, 48, 3469-3485.


Segschneider, J., D.L.T. Anderson, and T.N. Stockdale, 2000. Towards the use of altimetry for operational seasonal forecasting. J. Climate, 13, 3115-3138.


Segschneider, J., M. Balmaseda, and D.L.T. Anderson, 2000. Anomalous hydrographic variations in the tropical Atlantic: possible causes and implications for the use of altimeter data. Geophys. Res. Let., 27, 2281-2284.


Segschneider, J., J.O.S. Alves, D.L.T. Anderson, M. Balmaseda, and T.N. Stockdale, 1999. Assimilation of TOPEX/Poseidon data into a seasonal forecast system, Phys. Chem. Earth (A), 24, 369-374.


Mittelstaedt, E., and J. Segschneider, 1999. Simulation der Radioaktivitätsausbreitung im Meer aufgrund der französischen Kernwaffenversuche im Südpazifik. Deutsche Hydrographische Zeitung, Supplement 10, p33-38.


Segschneider, J. and J. Sündermann, 1998. Simulating large scale transport of suspended matter, J. Mar. Sys., 14, 81-97.


Segschneider, J. and J. Sündermann, 1997. Response of a global ocean model to real time forcing and implications for earth's rotation, J. Phys. Oceanogr., 27, 2370-2380.


Segschneider, J. and J. Sündermann, 1997. Large scale transport of particle reactive tracers - numerical simulations. Proceedings of the Seventh (1997) International Offshore and Polar Engineers Conference, Honolulu, USA, May 25-30, 1997, Vol. I, pp. 461-467.


Brosche P., E. Maier-Reimer, J. Sündermann, J. Segschneider, and J. Wünsch, 1997. The axial angular momentum of a general circulation model of the oceans. Astronomische Nachrichten, 318, 193 - 199.


Zielke, W., J. Jankowski, J. Segschneider, and J. Sündermann, 1995. Numerical modeling of sediment transport caused by deep sea mining. Proceedings of the ISOPE-Ocean Mining Symposium 1995, Tsukuba, Japan, Nov. 21-22, 157-162.


Winguth, A.M.E., M. Heimann, K.D. Kurz, E. Maier-Reimer, U. Mikolajewicz, and J. Segschneider, 1994. El Niño-Southern Oscillation related fluctuations of the marine carbon cycle, Global Biogeochemical Cycles, 8, 39-63.



Curriculum vitae

Diploma in physical oceanography at the University of Hamburg (Germany) 1992


PhD in physical oceanography at the University of Hamburg (Germany) 1996


04/1992 - 12/1994 Research Scientist at the Institute of Oceanography, University of Hamburg


01/1995 - 07/1997 Research Scientist at the Max-Planck-Institute for Meteorology, Hamburg


07/1997 - 09/2000 Consultant at the European Centre for Medium Range Weather Forecasts, Reading, UK


10/2000 - 01/2002 Ricercatore at the Istituto Nazionale di Geofisica e Vulcanologia, Bologna, Italy


02/2002 - 07/2003 Research Scientist at the Max-Planck-Institute of Aeronomy, Katlenburg-Lindau


since 08/2003 Research Scientist at the Max-Planck-Institute for Meteorology, Hamburg


07/2011 - 03/2012 part time scientist at the Centre for Ice and Climate, Nils Bohr Institute, University of Copenhagen, Denmark


since 10/2012 part time scientist at O.A.Sys Research GmbH, Hamburg

Links of interest