Institut für Meteorologie und Klimaforschung
Dr.  Christian Grams

Dr. Christian Grams

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

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

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


2020
Stratospheric influence on ECMWF sub‐seasonal forecast skill for energy‐industry‐relevant surface weather in European countries.
Büeler, D.; Beerli, R.; Wernli, H.; Grams, C. M.
2020. Quarterly journal of the Royal Meteorological Society. doi:10.1002/qj.3866
Dynamics of concurrent and sequential Central European and Scandinavian heatwaves.
Spensberger, C.; Madonna, E.; Boettcher, M.; Grams, C. M.; Papritz, L.; Quinting, J. F.; Röthlisberger, M.; Sprenger, M.; Zschenderlein, P.
2020. Quarterly journal of the Royal Meteorological Society. doi:10.1002/qj.3822
A weather system perspective on winter‐spring rainfall variability in southeastern Australia during El Niño.
Hauser, S.; Grams, C. M.; Reeder, M. J.; McGregor, S.; Fink, A. H.; Quinting, J. F.
2020. Quarterly journal of the Royal Meteorological Society. doi:10.1002/qj.3808
Sub-national variability of wind power generation in complex terrain and its correlation with large-scale meteorology.
Pickering, B.; Grams, C. M.; Pfenninger, S.
2020. Environmental research letters, 15 (4), Article: 044025. doi:10.1088/1748-9326/ab70bd
2019
Representation of atmospheric blocking in the new global non-hydrostatic weather prediction model ICON.
Attinger, R.; Keller, J. H.; Köhler, M.; Riboldi, J.; Grams, C. M.
2019. Meteorologische Zeitschrift, 28 (5), 429–446. doi:10.1127/metz/2019/0967
Stratospheric modulation of the large‐scale circulation in the Atlantic‐European region and its implications for surface weather events.
Beerli, R.; Grams, C. M.
2019. Quarterly journal of the Royal Meteorological Society, 145 (725), 3732–3750. doi:10.1002/qj.3653
Winter pressures on the UK health system dominated by the Greenland Blocking weather regime.
Charlton-Perez, A. J.; Aldridge, R. W.; Grams, C. M.; Lee, R.
2019. Weather and climate extremes, 25, 100218. doi:10.1016/j.wace.2019.100218
The climatological impact of recurving North Atlantic tropical cyclones on downstream extreme precipitation events.
Pohorsky, R.; Röthlisberger, M.; Grams, C. M.; Riboldi, J.; Martius, O.
2019. Monthly weather review, 147 (5), 1513–1532. doi:10.1175/MWR-D-18-0195.1
The Extratropical Transition of Tropical Cyclones Part II: Interaction with the midlatitude flow, downstream impacts, and implications for predictability.
Keller, J. H.; Grams, C. M.; Riemer, M.; Archambault, H. M.; Bosart, L.; Doyle, J. D.; Evans, J. L.; Galarneau, T. J., Jr.; Griffin, K.; Harr, P. A.; Kitabatake, N.; McTaggart-Cowan, R.; Pantillon, F.; Quinting, J.; Reynolds, C. A.; Ritchie, E. A.; Torn, R. D.; Zhang, F.
2019. Monthly weather review, 147, 1077–1106. doi:10.1175/MWR-D-17-0329.1
2018
The effects of orography on the extratropical transition of tropical cyclones: a case study of Typhoon Sinlaku (2008).
Lentink, H. S.; Grams, C. M.; Riemer, M.; Jones, S. C.
2018. Monthly weather review, 146, 4231–4246. doi:10.1175/MWR-D-18-0150.1
An atmospheric dynamics‘ perspective on the amplification and propagation of forecast error in numerical weather prediction models: a case study.
Grams, C. M.; Magnusson, L.; Madonna, E.
2018. Quarterly journal of the Royal Meteorological Society, 144 (717), 2577–2591. doi:10.1002/qj.3353
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

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.