Priv.-Doz. Dr. Michael Riemer

Senior scientist and group leader in the Dynamic Meteorology group at the

Research interests

Atmospheric Dynamics and Predictability, Tropical Cyclones, High-Impact Weather

Publications

(first-author papers by supervised students are marked with an asterix)

Submitted --- in revision --- accepted --- in press:

• *Schmidt, S., M. Riemer, J. de Heuvel, R. McTaggart-Cowan, T. Selz, 2024: A feature-based framework to investigate atmospheric predictability, Mon. Wea. Rev., in revision

Published:.

• Doensen, O., Fragkoulidis, G., Magnusson, L., Riemer, M., and Wirth, V., 2024: Medium-range predictability of temperature extremes and biases in Rossby wave amplitude, Quart. J. Roy. Meteor. Soc., 150, 5390-5402
• Prestel-Kupferer, I., M. Riemer, S. Schmidt, and F. Teubler, 2024: Predictability of midlatitude Rossby wave packets, Quart. J. Roy. Meteor. Soc., 1550, 5057-5073
• *Fischer, C., A. H. Fink, E. Schömer, M. Rautenhaus, and M. Riemer, 2024: An objective identification technique for potential vorticity structures associated with African Easterly Waves, Geosci. Model Dev., 17, 4213–4228
• Hauser, S., F. Teubler, M. Riemer, P. Knippertz, and C. M. Grams, 2024: Life cycle dynamics of Greenland blocking from a potential vorticity perspective, Weather Clim. Dynam., 5, 633-658
• Hauser, S., F. Teubler, M. Riemer, P. Knippertz, and C. M. Grams, 2024: Tracks of negative upper-tropospheric PV anomalies (PVAs− ) over the Northern Hemisphere in ERA5 reanalysis (1979-2021), Dataset, KIT, DOI: 10.35097/nncxPGLAaaDgVKIW
• Hauser, S., F. Teubler, M. Riemer, P. Knippertz, and C. M. Grams, 2023: Towards a holistic understanding of blocked regime dynamics through a combination of complementary diagnostic perspectives, Weather Clim. Dynam., 4, 399-425
• Teubler, F., M. Riemer, C. Polster, C. M. Grams, Hauser, S., V. Wirth, 2023: Similarity and variability of blocked weather-regime dynamics in the Atlantic-European region, Weather Clim. Dynam., 4, 265-285
• Keshtgar, B. A. Voigt, C. Hoose, M. Riemer, and B. Mayer, 2023: Cloud radiative impact on the dynamics and predictability of an idealized extratropical cyclone, Weather Clim. Dynam., 4, 115-132
• Golding, B., J. Sun, M. Riemer, N. Yussouf, H. Titley, J. Robbins, B. Ebert T. Pagano, H. Lewis, and C. Dashwood, 2022: Connecting weather and hazard - a partnership of physical scientists in connected discipline. In Towards the "Perfect" Weather Warning, (pp. 149-200). Springer, Cham.
• Joe, P., J. Sun, N. Yussouf, S. Goodman, M. Riemer, K. Gouda, B. Golding, R. Rogers, G. Isaac, J. Wilson, P.W.P. Li, V. Wulfmeyer, K. Elmore, J. Onlvlee, P. Chong, and J. LaDue, 2022: Predicting the weather - a partnership of observation scientists and forecasters. In Towards the "Perfect" Weather Warning, (pp. 201-254). Springer, Cham.
• Selz, T. M. Riemer, and G. Craig, 2022: The transition from practical to intrinsic predictability of midlatitude weather, J. Atmos. Sci., 79, 2013-2030.
• *Fischer, C., A.H. Fink, E. Schömer, R. van der Linden, M. Maier-Gerber, M. Rautenhaus, and M. Riemer, 2022: A novel method for objective identification of 3-D potential vorticity anomalies, Geosci. Model Dev., 1-30
• *Maier-Gerber, M., A.H. Fink, M. Riemer, E. Schömer, C. Fischer, and B. Schulz, 2021: Statistical-Dynamical Forecasting of Sub-Seasonal North Atlantic Tropical Cyclone Occurrence, Wea. Forecasting, 36, 2127-2142
• Teubler, F. and M. Riemer, 2021: Potential-Vorticity Dynamics of Troughs and Ridges within Rossby Wave Packets during a 40-year reanalysis period, Weather Clim. Dynam., 2, 535–559
• Craig, G., A.H. Fink, C. Hoose, T. Janjic, P. Knippertz, A. Laurian, S. Lerch, B. Mayer, A. Miltenberger, R. Redl, M. Riemer, K. Tempest, and V. Wirth, 2021: Waves to Weather: Exploring the limits of predictability of weather, Bull. Amer. Met. Soc., 102, E2151–E2164
• Riemer, M., J. H. Keller, and C.M. Grams, 2020: Die außertropische Umwandlung tropischer Wirbelstürme und ihre Folgen, PROMET, 103, 67-76
• *Kremer, T., E. Schömer, C. Euler, and M. Riemer, 2020: Cluster analysis tailored to structure change of tropical cyclones using a very large number of trajectories, Mon. Wea. Rev., 148, 4209–4229
• Ghinassi, P., M. Baumgart, F. Teubler, M. Riemer, and V. Wirth, 2020: A budget equation for the amplitude of Rossby wave packets based on finite amplitude local wave activity, J. Atmos. Sci., 77, 277-296
• *Baumgart, M. A. and M. Riemer, 2019: Processes governing the amplification of ensemble spread in a medium-range forecast with large forecast uncertainty, Quart. J. Roy. Meteor. Soc., 145, 3252-3270
• *Euler, C., M. Riemer, T. Kremer, and E. Schömer, 2019: Lagrangian Description of Air Masses Associated with Latent Heat Release in Tropical Storm Karl (2016) during Extratropical Transition, Mon. Wea. Rev., 147, 2657-2676
• Zhang, Q., L. Li, B. Ebert, B. Golding, D. Johnston, B. Mills, S. Panchuk, S. Potter, M. Riemer, J. Sun, A. Taylor, S. Jones, P. Ruti, and J. Keller, 2019: Increasing the Value of Weather-Related Warnings, Science Bulletin
• Fu, H., Y. Wang, M. Riemer, and Q. Li, 2019: Effect of Unidirectional Vertical Wind Shear on Tropical Cyclone Intensity Change – Lower-Layer Shear versus Upper-Layer Shear, J. Geophys. Res. Atmos., 124, 6265-6282
• *Di Muzio, E., M. Riemer, A. H. M. Fink, and M. Maier-Gerber, 2019: Assessing the predictability of Medicanes in ECMWF ensemble forecasts using an object-based approach, Quart. J. Roy. Meteor. Soc., 145, 1202-1217
• *Baumgart, M. A., M. Riemer, G. Craig, P. Ghinassi, T. Selz, and V. Wirth, 2019: Quantitative view on processes governing the error growth from the convective to the planetary scale in simulations with a stochastic convection scheme, Mon. Wea. Rev., 147, 1713-1731
• Riboldi, J., C. M. Grams, M. Riemer, and H. M. Archambault, 2019: A phase-locking perspective on Rossby wave amplification and atmospheric blocking downstream of recurving western North Pacific tropical cyclones, Mon. Wea. Rev., 147, 567-589
• Keller, J. H., C. M. Grams, M. Riemer, H. M. Archambault, L. Bosart, J. Doyle, J. L. Evans, T. Galarneau, K. S. Griffin, P. A. Harr, N. Kitabatake, R. McTaggart-Cowan, F. Pantillon, J. F. D. Quinting, C. A. Reynolds, E. A. Ritchie, R. Torn, F. Zhang, 2019: The Extratropical Transition of Tropical Cyclones: Interaction with the midlatitude flow, downstream impacts and implications in predictability, Mon. Wea. Rev., 147, 1077-1106
• *Maier-Gerber, M., M. Riemer, A. H. Fink, P. Knippertz, E. Di Muzio, R. McTaggart-Cowan, 2019: „Tropical Transition of Hurricane Chris (2012) over the North Atlantic Ocean: A Multi-Scale Investigation of Predictability“, Mon. Wea. Rev., 147, 951-970
• Kumpf, A., M. Rautenhaus, M. Riemer, R. Westermann, 2018: Visual Analysis of the Temporal Evolution of Ensemble Forecast Sensitivities, IEEE Transactions on Visualization and Computer Graphics, 25, 98-108
• Lentink, H. S., C. M. Grams, M. Riemer, and S. C. Jones, 2018: The effects of orography on the extratropical transition of tropical cyclones: a case study of Typhoon Sinlaku (2008), Mon. Wea. Rev., 146, 4231-4246
• DeVries, A. J., H. G. Oversloot, S. B. Feldstein, Riemer, M., A. M. El Kenawy, M. F. McCabe, and J. Lelieveld, 2018: Identification of Tropical-Extratropical Interaction and Extreme Precipitation Events in the Middle East based on Potential Vorticity and Moisture Transport, J. Geophys. Res. Atmos., 123, DOI:10.1002/2017JD027587
• *Baumgart, M. A., M. Riemer, V. Wirth, F. Teubler, and S.T. Lang, 2018: Potential-vorticity dynamics of forecast errors: A quantitative case study, Mon. Wea. Rev., 146, 1405-1425
• Wirth, V., M. Riemer, E.K.M. Chang, and O. Martius, 2018: Rossby Wave Packets on the Mid-Latitude Rossby Waveguide --- a Review, Mon. Wea. Rev., 146, 1965-2001
• Kumpf, A., B. Tost, M. Baumgart, M. Riemer, R. Westermann, and M. Rautenhaus, 2017: Visualizing Benefit and Robustness of Cluster-based Displays of Ensemble Weather Forecasts, IEEE Transactions on Visualization and Computer Graphics, 24, 109-119
• Jung, P., P. Hausner, L. Pilz, J. Stern, C. Euler, M. Riemer, and F. Sadlo, 2017: Tumble-Vortex Core Line Extraction, proceedings of SIBGRAPI WVIS
• Evans, C.; K. Wood; S. D. Aberson; H. M. Archambault; S. M. Milrad; L. F. Bosart; K. L. Corbosiero; C. A. Davis; J. R. Dias Pinto; J. Doyle; C. Fogarty; T. J. Galarneau, Jr.; C. M. Grams; K. S. Griffin; J. Gyakum; R. E. Hart; N. Kitabatake; H. S. Lentink; R. McTaggart-Cowan; W. Perrie; J. F. D. Quinting; C. A. Reynolds; M. Riemer; E. Ritchie; Y. Sun; F. Zhang, 2017: The Extratropical Transition of Tropical Cyclones. Part I: Cyclone Evolution and Direct Impacts, Mon. Wea. Rev., 145, 4317-4344
• *Maier-Gerber, M., F. Pantillon, E. Di Muzio, M. Riemer, A. H. Fink, P. Knippertz, 2017: Birth of the Biscane, Weather, 72, 236-241
• Schneidereit, A., D.H.W. Peters, C. Grams, J. Quinting, J. Keller, G. Wolf, F. Teubler, M. Riemer, and O. Martius, 2017: Enhanced tropospheric wave forcing of two anticyclones in the pre-phase of January 2009 major sudden stratospheric warming event (MSSW), Mon. Wea. Rev., 145, 1797-1815
• Riemer, M., 2016: Meso-beta-scale environment for the stationary band complex of vertically-sheared tropical cyclones, Quart. J. Roy. Meteor. Soc., 142, 2442-2451
• DeVries, A. J., S. B. Feldstein, E. Tyrlis, M. Sprenger, M. Riemer, M. Baumgart, M. Fnais, and J. Lelieveld, 2016: Dynamics of tropical-extratropical interactions and extreme precipitation events in Saudi Arabia in autumn, winter, and spring, Quart. J. Roy. Meteor. Soc., 142, 1862-1880
• *Teubler, F. and M. Riemer, 2016: Dynamics of Rossby wave packets in a quantitative potential vorticity--potential temperature framework, J. Atmos. Sci., 73, 1063-1081
• Riemer, M. and F. Laliberté, 2015: Secondary circulation of tropical cyclones in vertical wind shear: Lagrangian diagnostic and pathways of environmental interaction, J. Atmos. Sci., 72, 3517-3536
• 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, large-scale circulation, and forecast uncertainty, Quart. J. Roy. Meteor. Soc., 141, 1922-1937
• Riemer, M., M. Baumgart, and S. Eiermann, 2014: Cyclogenesis downstream of extratropical transition analyzed by Q-vector partitioning based on flow geometry, J. Atmos. Sci., 71, 4204-4220
• Riemer, M. and S. C. Jones, 2014: Interaction of a tropical cyclone with a high-amplitude, midlatitude wave pattern: Waviness analysis, trough deformation and track bifurcation, Quart. J. Roy. Meteor. Soc., 140, 1362-1376, DOI: 10.1002/qj.2221
• Riemer, M., M. T. Montgomery, and M. A. Nicholls, 2013: Further examination of the thermodynamic modification of the inflow layer of tropical cyclones by vertical wind shear, Atmos. Chem. Phys., 13, 327-346, www.atmos-chem-phys.net/13/327/
• Evans, C., H. M. Archambault, J. M. Cordeira, C. Fritz, T. J. Galarneau, S. Gjorgjievska, K. S. Griffin, A. Johnson, W. A. Komaromi, S. Monette, P. Muradyan, B. Murphy, M. Riemer, J. Sears, D. Stern, B. Tang, S. Thompson, 2012: The PRE-Depression Investigation of Cloud-systems in the Tropics (PREDICT) Field Campaign: Perspectives of Early Career Scientists, 2012: Bull. Amer. Meteor. Soc., 93, 173-187
• Riemer, M., 2012: Bedrohliche Wirbel: Physik tropischer Wirbelstürme. Physik in unserer Zeit, 43, 220-228.
• Riemer, M. and M.T. Montgomery, 2011: Simple kinematic models for the environmental interaction of tropical cyclones in vertical wind shear, Atmos. Chem. Phys., 11, 9395-9414, www.atmos-chem-phys.net/11/9395/
• Riemer, M., M. T. Montgomery, and M. A. Nicholls, 2010: A new paradigm for intensity modification of tropical cyclones: Thermodynamic impact of vertical wind shear on the inflow layer, Atmos. Chem. Phys, 10, 3163-3188, www.atmos-chem-phys.net/10/3163/
• Riemer, M. and S. C. Jones, 2010: Downstream impact of tropical cyclones on a developing baroclinic wave in idealized scenarios of extratropical transition, Quart. J. Roy. Meteor. Soc., 136, 617–637
• Davis, C. A., S. C. Jones, and M. Riemer, 2008: Hurricane Vortex Dynamics during Atlantic Extratropical Transition, J. Atmos. Sci., 65, 714-736
• Riemer, M., S. C. Jones, and C. A. Davis, 2008: The impact of extratropical transition on the downstream flow: an idealised modelling study with a straight jet, Quart. J. Roy. Meteor. Soc., 134, 69-91
• Jones, S. C., D. Anwender, und M. Riemer, 2006: Die Umwandlung tropischer Wirbelstürme in außertropische Tiefdruckgebiete und ihr Einfluss auf das Wetter der mittleren Breiten, Promet, 32 (3/4), 130-143
• Wirth, V., H. Borth, J.-F. Lopez, W.-G. Panhans, M. Riemer and T. Szabo, 2005: Dynamics in the extratropical tropopause region: a case of transition between dynamically active and passive tracer advection? Quart. J. Roy. Meteor. Soc., 131, 247-258
• Sarazin, M. S., Graham, E., Beniston, M. and Riemer, M., 2003: New tools for a global survey of potential sites for the future giant telescopes, Future Giant Telescopes, 4840, 291-298