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Dr.  Christian Grams

Dr. Christian Grams


Großräumige Dynamik und Vorhersagbarkeit

Tel.: +49 721 608-26544
gramsZfr5∂kit edu

Karlsruher Institut für Technologie (KIT) 
Institut für Meteorologie und Klimaforschung

Hermann-von-Helmholtz-Platz 1
D-76344 Eggenstein-Leopoldshafen


Please visit my private webpage (external) for more information, e.g.

—  List of Publications

—  Curriculum Vitae

—  Research

See the "Large-scale Dynamics and Predictability" group pages for research activities in the group.

Begutachtete Zeitschriftenbeiträge

Influence of blocking on Northern European and Western Russian heatwaves in large climate model ensembles.
Schaller, N.; Sillmann, J.; Anstey, J.; Fischer, E. M.; Grams, C. M.; Russo, S.
2018. Environmental research letters, 13 (5), Art.Nr. 054015. doi:10.1088/1748-9326/aaba55
Rossby wave initiation by recurving tropical cyclones in the western North Pacific.
Riboldi, J.; Röthlisberger, M.; Grams, C. M.
2018. Monthly weather review, 146 (5), 1283-1301. doi:10.1175/MWR-D-17-0219.1
Publications before group start


Schäfler, A., and Coauthors, 2018: The North Atlantic Waveguide and Downstream Impact Experiment. Bull. Amer. Meteor. Soc., doi:10.1175/BAMS-D-17-0003.1.


Binder, H., M. Böttcher, C. M. Grams, H. Joos, S. Pfahl, and H. Wernli, 2017: Exceptional airmass transport and dynamical drivers of an extreme Arctic winter warm event. Geophys. Res. Lett., 44, 2017GL075841, doi:10.1002/2017GL075841.

Grams, C. M., R. Beerli, S. Pfenninger, I. Staffell, and H. Wernli, 2017: Balancing Europe’s wind power output through spatial deployment informed by weather regimes, Nature Climate Change, 7, 557–562,  doi:10.1038/nclimate3338.

Beerli, R., H. Wernli, and C. M. Grams, 2017: Does the lower stratosphere provide predictability for month-ahead wind electricity generation in Europe? Quart. J. Roy. Meteor. Soc.,143, 3025–3036, doi:10.1002/qj.3158.

Evans, C., and Coauthors, 2017: The Extratropical Transition of Tropical Cyclones. Part I: Cyclone Evolution and Direct Impacts. Mon. Wea. Rev., 145, 4317–4344, doi:10.1175/MWR-D-17-0027.1.

Madonna, E., C. Li, C. M. Grams, and T. Woollings, 2017: The link between eddy-driven jet variability and weather regimes in the North Atlantic-European sector. Quart. J. Roy. Meteor. Soc., 143, 2960–2972, doi:10.1002/qj.3155.

Schneidereit, A., D. Peters, C.M. Grams, G. Wolf, M. Riemer, F. Gierth, J. Quinting, J.H. Keller, and O. Martius, 2017: Enhanced tropospheric wave forcing of two anticyclones in the pre-phase of  the January 2009 major sudden stratospheric warming event. Mon. Wea. Rev., 145, 1797-1815, doi:10.1175%2FMWR-D-16-0242.1.

Sprenger M., G. Fragkoulidis, H. Binder, M. Croci-Maspoli, P. Graf, C. M. Grams, P. Knippertz, E. Madonna, S. Schemm, B. Skerlak, and H. Wernli, 2017: Global climatologies of Eulerian and Lagrangian flow features based on ERA-Interim reanalyses. Bull. Amer. Meteor. Soc., 98, 1739–1748, doi:10.1175/BAMS-D-15-00299.1.


Grams, C. M. and H. M. Archambault, 2016: The key role of diabatic outflow in amplifying the midlatitude flow: a representative case study of weather systems surrounding western North Pacific extratropical transition. Mon. Wea. Rev., 144, 3847–3869, doi:10.1175/MWR-D-15-0419.1.


Grams, C. M., S.T.K. Lang, and J.H. Keller, 2015: A quantitative assessment of the sensitivity of the downstream midlatitude flow response to extratropical transition of tropical cyclones. Geophys. Res. Lett., 42, 2015GL065764, doi:10.1002/2015GL065764.

Grams, C. M. and S.R. Blumer, 2015: European high-impact weather caused by the downstream response to the extratropical transition of North Atlantic Hurricane Katia (2011). Geophys. Res. Lett., 42, 2015GL066253, doi:10.1002/2015GL066253.

Pfahl, S., C. Schwierz, M. Croci-Maspoli, C. M. Grams, and H. Wernli, 2015: Importance of latent heat release in ascending air streams for atmospheric blocking. Nature Geosci., 8, 610–614, doi:10.1038/ngeo2487.

Piaget, N., P. Froidevaux, P. Giannakaki, F. Gierth, O. Martius, M. Riemer, G. Wolf, and C. M. Grams, 2015: Dynamics of a local Alpine flooding event in October 2011: moisture source and large-scale circulation. Quart. J. Roy. Meteor. Soc., 141, 1922–1937, doi:10.1002/qj.2496.

Rautenhaus, M., C. M. Grams, A. Schäfler, and R. Westermann, 2015. 3-D visualization of ensemble weather forecasts – Part 2: Forecasting warm conveyor belt situations for aircraft-based field campaigns, Geosci. Model Dev., 8, 2355-2377, doi:10.5194/gmd-8-2355-2015.


Madonna, E., M. Boettcher, C. M. Grams, H. Joos, O. Martius and H. Wernli, 2014: Verification of North Atlantic warm conveyor belt outflows in ECMWF forecasts. Quart. J. Roy. Meteor. Soc., 141: 1333–1344, doi:10.1002/qj.2442.

Grams, C. M., H. Binder, S. Pfahl, N. Piaget, and H. Wernli, 2014: Atmospheric processes triggering the Central European floods in June 2013, Nat. Hazards Earth Syst. Sci., 14, 1691–1702, doi:10.5194/nhess-14-1691-2014.

Schäfler, A., M. Boettcher, C. M. Grams, M. Rautenhaus, H. Sodemann, and H. Wernli, 2014: Planning of aircraft measurements within a warm conveyor belt. Weather, 69 (6), June 2014, doi:10.1002/wea.2245.


Grams, C. M., S.C. Jones, C.A. Davis, P.A. Harr, and M. Weissmann, 2013: The impact of Typhoon Jangmi (2008) on the midlatitude flow. Part I: upper-level ridgebuilding and modification of the jet. Quart. J. Roy. Meteor. Soc., 139, 2148–2164, doi:10.1002/qj.2091.

Grams, C. M., S.C. Jones, and C.A. Davis, 2013: The impact of Typhoon Jangmi (2008) on the midlatitude flow. Part II: downstream evolution. Quart. J. Roy. Meteor. Soc., 139, 2165–2180, doi:10.1002/qj.2119.


Grams, C. M., H. Wernli, M. Böttcher, J. Čampa, U. Corsmeier, S.C. Jones, J.H. Keller, C.-J. Lenz, and L. Wiegand, 2011: The key role of diabatic processes in modifying the upper-tropospheric wave guide: a North Atlantic case-study. Quart. J. Roy. Meteor. Soc., 137: 2174-2193, doi:10.1002/qj.891.

Huang, Q., J. H. Marsham, D.J. Parker, W. Tian and C. M. Grams, 2010: Simulations of the effects of surface heat flux anomalies on stratification, convective growth and vertical transport within the Saharan boundary layer. J. Geophys. Res., 115, D05201, doi:10.1029/2009JD012689.

Grams, C. M., S.C. Jones, J.H. Marsham, D.J. Parker, J.M. Haywood, and V. Heuveline, 2010: The Atlantic Inflow to the Saharan heat low: observations and modelling. Quart. J. Roy. Meteor. Soc., 136, SI1, 125-140, doi:10.1002/qj.429.

Marsham, J.H., D.J. Parker, C. M. Grams, B.T. Johnson, W.M.F. Grey, and A.N. Ross, 2008a: Observations of mesoscale and boundary-layer scale circulations affecting dust transport and uplift over the Sahara. Atmos. Chem. Phys., 8, 6979–6993, doi:10.5194/acp-8-6979-2008.

Marsham, J.H., D.J. Parker, C. M. Grams, C.M. Taylor, and J.M. Haywood, 2008b: Uplift of Saharan dust south of the intertropical discontinuity. J. Geophys. Res., 113, doi:10.1029/2008JD009844.