Research

My general research focus is on synoptic-dynamic meteorology, physical and dynamical processes governing the large-scale atmospheric circulation, high impact weather, and predictability in particular on the medium- and subseasonal time scales.

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

Publications before group start

2018

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.

2017

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.

2016

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.

2015

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.

2014

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.

2013

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.

2008-2011

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.