Thomas Raddatz

Employed at:

Max Planck Institute for Meteorology, Hamburg

 

Office

Email: thomas.raddatz@mpimet.mpg.de

Phone: +49-40-41173-264

Fax: +49-40-41173-298

Room no. G1721

 

Mailing Address

Max Planck Institute for Meteorology

Bundesstr. 53

D-20146 Hamburg

Germany

 

Department

Land in the Earth System

 

Research Group

Vegetation modelling

Research Interests
  • large scale land cover dynamics
  • atmosphere/vegetation interactions
  • surface albedo and emissivity
  • global carbon cycle
  • teleconnections
Projects
  • C4MIP (as part of CMIP5 and CMIP6)
  • GINKGO network
  • CYCLOPES (finished)
  • DEKLIM (finished)
  • STOEC (finished)
Peer reviewed publications
  • Pongratz J., Reick C., Raddatz T., Claussen M. (2010) Biogeophysical versus biogeochemical climate response to historical anthropogenic land cover change. Geophys. Res. Lett., 37, doi 10.1029/2010GL043010
  • Bathiany S., Claussen M., Brovkin V., Raddatz T., Gayler V. (2010) Combined biogeophysical and biogeochemical effects of large-scale forest cover changes in the MPI earth system model. Biogeosciences, 7, 1383-1399, doi 10.5194/bg-7-1383-2010
  • Jungclaus J., Lorenz S., Timmreck C., Reick C., Brovkin V., Six K., Segschneider J., Giorgetta M., Crowley T., Pongratz J., Krivova N., Vieira L., Solanki S., Klocke D., Botzet M., Esch M., Gayler V., Haak H., Raddatz T., Roeckner E., Schnur R., Widmann H., Claussen M., Stephens B., Marotzke J. (2010) Climate and carbon-cycle variability over the last millennium. Climate of the Past, 6, 723-737, doi 10.5194/cp-6-723-2010
  • Otto J., Raddatz T., Claussen M. (2009) Climate variability-induced uncertainty in mid-Holocene atmosphere-ocean-vegetation feedbacks. Geophys. Res. Lett., 36, doi 10.1029/2009GL041457
  • Timmreck C., Lorenz S., Crowley T., Kinne S., Raddatz T., Thomas M., Jungclaus J. (2009) Limited temperature response to the very large AD 1258 volcanic eruption. Geophys. Res. Lett., 36, doi 10.1029/2009GL040083
  • Pongratz J., Reick C.H., Raddatz T., Claussen M. (2009) Effects of anthropogenic land cover change on the carbon cycle of the last millennium. Global Biogeochem. Cycles, 23, doi 10.1029/2009GB003488
  • Tanaka K., Raddatz T., O'NReick C. H. (2009) Insufficient forcing uncertainty underestimates the risk of high climate sensitivity. Geophys. Res. Lett., 36, doi:10.1029/2009GL039642
  • Otto J., Raddatz T., Claussen M., Brovkin V., Gayler V. (2009) Separation of atmosphere-ocean-vegetation feedbacks and synergies for mid-Holocene climate. Geophys. Res. Lett., 36, doi 10.1029/2009GL037482
  • Brovkin V., Raddatz T., Reick C.H., Claussen M., Gayler V. (2009) Global biogeophysical interactions between forest and climate. Geophys. Res. Lett., 36, doi 10.1029/2009GL037543
  • Pongratz J., Raddatz T., Reick C., Esch M., Claussen M. (2009) Radiative forcing from anthropogenic land cover change since A.D. 800, Geophys. Res. Lett., 36, doi 10.1029/2008GL036394
  • Rechid D., Raddatz T., Jacob D. (2009) Parameterization of snow-free land surface albedo as a function of vegetation phenology based on MODIS data and applied in climate modelling. Theor. Appl. Climatol., 95, 245-255, doi 10.1007/s00704-008-0003-y
  • Kattge J., Knorr W., Raddatz T., Wirth C. (2009) Quantifying photosynthetic capacity and its relationship to leaf nitrogen content for global-scale terrestrial biosphere models. Global Change Biology, 15, 976-991, doi 10.1111/j.1365-2486.2008.01744.x
  • Pongratz J., Reick C., Raddatz T., Claussen M. (2008) A reconstruction of global agricultural areas and land cover for the last millennium. Global Biogeochem. Cycles, 22, doi 10.1029/2007GB003153
  • Crueger T., Roeckner E., Raddatz T., Schnur R., Wetzel P. (2008) Ocean dynamics determine the response of oceanic CO2 uptake to climate change. Clim. Dyn., 31, 151-168, doi 10.1007/s00382-007-0342-x
  • Raddatz T.J., Reick C.H., Knorr W., Kattge J., Roeckner E., Schnur R., Schnitzler K.-G., Wetzel P., Jungclaus J. (2007) Will the tropical land biosphere dominate the climate-carbon cycle feedback during the twenty first century? Clim. Dyn., 29, 565-574, doi 10.1007/s00382-007-0247-8
  • Friedlingstein P., Cox P., Betts R., Bopp L., von Bloh W., Brovkin V., Cadule P., Doney S., Eby S., Fung I., Bala G., John J., Jones C., Joos F., Kato T., Kawamiya M., Knorr W., Lindsay K., Matthews H., Raddatz T., Rayner P., Reick C., Roeckner E., Schnitzler K., Schnur R., Strassmann K., Weaver A., Yoshikawa C., Zeng N. (2006) Climate-carbon cycle feedback analysis: results from the C4MIP model intercomparison. J. Climate, 19, 3337-3353.
Other publications
  • Pongratz J., Reick C.H., Raddatz T., Claussen M. (2008) A global land cover reconstruction AD 800 to 1992 - Technical Description. Reports on Earth System Science, No 51, MPI for Meteorology, Hamburg, Germany.
  • Tanaka K., Raddatz T., O'Neill B., Reick C.H. (2008) Is the climate sensitivity even more uncertain? Interim Report IR-08-012, International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria.
  • Tanaka K., Kriegler E., Bruckner T., Hooss G., Knorr W., Raddatz T. (2007) Aggregated Carbon Cycle, Atmospheric Chemistry, Climate Model (ACC2). Reports on Earth System Science, No 40, MPI for Meteorology, Hamburg, Germany.
  • Raddatz T. (2002) Hoch- und Ultrahochfrequente Variabilität im nordhemisphärischen Winter. Mitteilungen aus dem Institut für Geophysik und Meteorologie der Universität zu Köln, Heft 148.
  • Raddatz T. (1997) Die numerische Behandlung von Koaleszenzprozessen in einem Stratusmodell mit Zweikomponenten-Mikrophysik. Diploma thesis, Johannes Gutenberg Universität Mainz.
Publications in preparation
  • Crueger T., Roeckner E., Schnur R., Raddatz T., Wetzel P. (2009) Slow-down of oceanic CO2 uptake in response to global warming. In: Marine Phytoplankton, Ed. Kersey W.T. and Munger S.P., Nova Science Publishers, Hauppage, USA.
  • Raddatz T., Tanaka K. (2009) Interdependency in estimates of climate sensitivity and aerosol forcing: implications for future warming. submitted to Geophys. Res. Lett.
  • Reick C.H., Raddatz T., Pongratz J., Claussen M. (2009) The pre-industrial carbon cycle and CO2 emissions from anthropogenic landcover change. in preparation
  • Raddatz T., Gayler V. (2009) Forests are warming the Earth: transpiration vs. albedo. in preparation
Contributions to international conferences
  • Raddatz T., Brovkin V., Reick C.H., Claussen M., Gayler V. (2009) Global scale interactions between forest and climate. Geophysical Research Abstracts, Vol. 11, SRef-ID: 1607-7962/gra/EGU2009-9647.
  • Raddatz T., Timmreck C., Lorenz S. (2009) Volcanic aerosol size distribution, diffuse radiation and vegetation productivity. Geophysical Research Abstracts, Vol. 11, SRef-ID: 1607-7962/gra/EGU2009-9720.
  • Otto J., Raddatz T., Claussen M. (2009) Climate variability induced uncertainties in simulated mid-Holocene feedbacks. Geophysical Research Abstracts, Vol. 11, SRef-ID: 1607-7962/gra/EGU2009-4564.
  • Pongratz J., Reick C.H., Raddatz T., M. Claussen (2009) Preindustrial agriculture and the carbon cycle - a GCM study on the beginning of the Anthropocene. Geophysical Research Abstracts, Vol. 11, SRef-ID: 1607-7962/gra/EGU2009-5697.
  • Vamborg F.S.E., Claussen M., Brovkin V., Raddatz T. (2009) Sensitivity of North African climate to orbital forcing and soil albedo in an Earth System model. Geophysical Research Abstracts, Vol. 11, SRef-ID: 1607-7962/gra/EGU2009-9545.
  • Crueger T., Roeckner E., Schnur R., Raddatz T., Wetzel P. (2009) Slow-down of oceanic CO2 uptake in response to climate change. Geophysical Research Abstracts, Vol. 11, SRef-ID: 1607-7962/gra/EGU2009-4578.
  • Getzieh R.J., Brovkin V., Reick C.H., Kleinen T., Raddatz T., Raivonen M., Sevanto S. (2009) Introducing a boreal wetland model within the Earth System model framework. Geophysical Research Abstracts, Vol. 11, SRef-ID: 1607-7962/gra/EGU2009-9516.
  • Lorenz S.J., Timmreck C., Crowley T.J., Kinne S., Raddatz T., Thomas M.A., Jungclaus J.H. (2009) Uncertainties in the climate forcing of a large volcanic eruption: An Earth System model study of the unknown 1258 AD eruption. Geophysical Research Abstracts, Vol. 11, SRef-ID: 1607-7962/gra/EGU2009-12592.
  • Pongratz J., Raddatz T., Reick C.H., Claussen M. (2008) Effects of Pre-industrial Agricultural Expansion and Epidemics on the Climate and the Carbon Cycle. Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract U31A-0007.
  • Raddatz T., Tanaka K. (2008) On the risk of abrupt warming after a shutdown of all emissions. Geophysical Research Abstracts, Vol. 10, SRef-ID: 1607-7962/gra/EGU2008-A-02716.
  • Raddatz T., Brovkin V., Gayler V., Reick C. H., Claussen M. (2008) A dynamic land cover model for COSMOS. Geophysical Research Abstracts, Vol. 10, SRef-ID: 1607-7962/gra/EGU2008-A-04335.
  • Tanaka K., Raddatz T., O'Neill B., Reick C. (2008) Is the climate sensitivity even more uncertain? Geophysical Research Abstracts, Vol. 10, SRef-ID: 1607-7962/gra/EGU2008-A-02716.
  • Reick C.H., Raddatz T., Pongratz J., Claussen M. (2008) Reconstructed preindustrial landuse change emissions and atmospheric CO2 from icecores are inconsistent. Geophysical Research Abstracts, Vol. 10, SRef-ID: 1607-7962/gra/EGU2008-A-04146.
  • Otto J., Raddatz T., Claussen M., Brovkin V., Gayler V., Reick C.H. (2008) Feedback analysis of mid-Holocene winter warming. Geophysical Research Abstracts, Vol. 10, SRef-ID: 1607-7962/gra/EGU2008-A-03097.
  • Fischer N., Jungclaus J., Raddatz T., Brovkin V. (2008) Eemian and Holocene climate variability in a coupled atmosphere-ocean-biosphere model. Geophysical Research Abstracts, Vol. 10, SRef-ID: 1607-7962/gra/EGU2008-A-03488.
  • Pongratz J., Reick C.H., Raddatz T., Claussen M. (2008) Biogeophysical effects of anthropogenic land cover change during the last millennium. Geophysical Research Abstracts, Vol. 10, SRef-ID: 1607-7962/gra/EGU2008-A-03996.
  • Pongratz J., Reick c.H., Raddatz T., Claussen M. (2007) A Millennium of Anthropogenic Land Cover Change and its Effects on Climate. Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract GC54C-01.
  • Raddatz T., Reick C.H., Pongratz J., Claussen M. (2007) The Influence of Changes in Land-use and Climate on atmospheric CO2 during the pre-industrial Millennium (800-1860). ICESM Abstracts, Vol. 1, ICESM2007-A-00262.
  • Crueger T., Segschneider J., Roeckner E., Raddatz T., Schnur R. (2007) Reduced efficiency of oceanic CO2-uptake due to climate change. ICESM Abstracts, Vol. 1, ICESM2007-A-00118.
  • Pongratz J., Reick C., Raddatz T., Claussen M. (2007) Anthropogenic land cover change in the last millennium - assessing its extent and consequences for climate. Geophysical Research Abstracts, Vol. 9, SRef-ID: 1607-7962/gra/EGU2007-A-01878.
  • Crueger T., Roeckner E., Raddatz T., Schnur R. (2007) Ocean dynamics determine the response of oceanic CO2-uptake to climate change. Geophysical Research Abstracts, Vol. 9, SRef-ID: 1607-7962/gra/EGU2007-A-06755.
  • Tanaka K., Tol R., Knorr W., Bruckner T., Kriegler E., Raddatz T. (2006) Uncertainty analysis using aggregated carbon cycle, atmospheric chemistry, and climate model (ACC2). Geophysical Research Abstracts, Vol. 8, SRef-ID: 1607-7962/gra/EGU06-A-10526.
  • Raddatz T., Roeckner E., Knorr W., Schnitzler K.-G., Reick C., Schnur R., Wetzel P. (2005) Modelling the carbon cycle responds to anthropogenic CO2 emissions: Uncertainties and constraints. Beijing, IAMAS 2005.
  • Raddatz T., Knorr W., Schnitzler K.-G. (2005) The influence of elevated atmospheric CO2 on the hydrological cycle via stomatal closure. Geophysical Research Abstracts, Vol. 7, SRef-ID: 1607-7962/gra/EGU05-A-04601.
  • Raddatz T. Schnitzler K.-G., Roeckner E., Knorr W., Reick C., Schnur R., Wetzel P. (2005) Modelling the carbon cycle response to anthropogenic CO2 emissions: uncertainties and constraints. Geophysical Research Abstracts, Vol. 7, SRef-ID: 1607-7962/gra/EGU05-A-04642.
  • Rechid D., Jacob D., Hagemann S., Raddatz T. (2005) Vegetation effect on land surface albedo: method to separate vegetation albedo from the underlying surface using satellite data. Geophysical Research Abstracts, Vol. 7, SRef-ID: 1607-7962/gra/EGU05-A-07153.
  • Raddatz T., Knorr W. (2004) The influence of surface emissivity on North African Climate. Geophysical Research Abstracts, Vol. 6, SRef-ID: 1607-7962/gra/EGU04-A-02880.
  • Stephenson D.B., Raddatz T., Ulbrich U (2001) Long-range persistence in the North Atlantic Oscillation. Geophysical Research Abstracts,Vol. 3
  • Raddatz T., Ulbrich U., Hoffmann G. (2000) The relation of the North Atlantic stormtrack and low level wind speed. Geophysical Research Abstracts, Vol. 2
Curriculum vitae

Born

26.09.1971 in Wesel, Germany

 

School

Konrad Duden Gymnasium, Wesel, Germany

 

College/University

Gutenberg University, Mainz, Meteorology, Diploma,

Diploma thesis 

Die numerische Behandlung von Koaleszenzprozessen in einem Stratusmodell mit Zweikomponenten-Mikrophysik

Ph.D.

Universität zu Köln, Institute for Meteorology and Geophysic

Ph.D. thesis

Hoch- und Ultrahochfrequente Variabilität im nordhemisphärischen Winter

 

Post-doc

Max Planck Institute for Biogeochemistry, Jena, Germany

Max Planck Institute for Meteorology, Hamburg, Germany

 

 

Recent research question
  • Saving water vs increasing productivity. How do plants take advantage of higher atmospheric CO2?
  • How strong is the coupling of vegetation productivity and climate in the tropics?
  • How strong is the feedback between arctic sea-ice and the boreal forest?