1203: NUKLEUS – Actionable local climate information for Germany

Principal investigator: Hendrik Feldmann

Karlsruher Institut für Technologie (KIT), Institut für Meteorologie und Klimaforschung (Community project)

Project abstract

Report 1/2021 to 12/2021
Report 1/2022 to 12/2022
Report 1/2023 to 12/2023
Report 1/2024 to 12/2024
Report 1/2025 to 12/2025
Report 1/2026 to 12/2026

Publications

• DOI: 10.1002/joc.70304, Pinto, J. G. , M. Hundhausen , A. Weber , et al. 2026. “ User-Relevant Climate Indices and Associated Uncertainties From Transient Convection-Permitting Climate Model Projections.” International Journal of Climatology 46, no. 6: e70304. https://doi.org/10.1002/joc.70304.
• DOI: 10.5194/egusphere-2026-1229, Voit, P., Hundhausen, M., Seregina, L., Feldmann, H., Ahrens, B., and Heistermann, M.: Southern Germany's 100-year flash flood discharge expected to increase by 30 % under an RCP8.5 climate, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2026-1229, 2026.
• DOI: 10.5194/gmd-19-5439-2026, Geyer, B., Campanale, A., Churiulin, E., Feldmann, H., Goergen, K., Hagemann, S., Ho-Hagemann, H. T. M., Karadan, M. M., Keuler, K., Khain, P., Lawand, D., Ludwig, P., Maurer, V., Petrov, S., Poll, S., Purr, C., Russo, E., Schubert-Frisius, M., Schulz, J.-P., Singh, S., Steger, C., Truhetz, H., and Will, A.: Optimisation of ICON-CLM for the EURO-CORDEX domain: developments, sensitivities, tuning, Geosci. Model Dev., 19, 5439–5490, https://doi.org/10.5194/gmd-19-5439-2026, 2026.
• DOI: 10.1088/1748-9326/ae7618, Philipp Heinrich* and Beate Geyer (2026): Changes in simultaneous low-wind and low-solar events (Dunkelflauten) under global warming: a high-resolution simulation study for Germany. Environ. Res. Lett. 21 124022DOI 10.1088/1748-9326/ae7618
• DOI: 10.5194/egusphere-2026-1024, Sieck, K., Pinto, J. G., Geyer, B., Keuler, K., Beier, C., Braun, C., Ehmele, F., Feldmann, H., Frisius, T., Heinrich, P., Hundhausen, M., Petrik, R., and Trachte, K.: NUKLEUS – A First Kilometre Scale Multi-model Climate Ensemble for Germany: Evaluation, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2026-1024, 2026.
• DOI: 10.5194/egusphere-2026-2517, Braun, C., Ehmele, F., Beier, C., Espitia-Sarmiento, E. F., Feldmann, H., Frisius, T., Geyer, B., Hundhausen, M., Keuler, K., Luterbacher, J., Sieck, K., Trachte, K., Xoplaki, E., and Pinto, J. G.: NUKLEUS – A first kilometer-scale convection-permitting multi-model climate ensemble for Germany: Characteristics of the historical simulations 1961–1990, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2026-2517, 2026.
• DOI: 10.1175/JCLI-D-25-0613.1, Beier, C., Ziegler, K., Paeth, H., Pinto, J.G., Sieck, K., Buntemeyer, L., Geyer, B., Xoplaki, E., Espitia, E., Braun, C., Ehmele, F., Feldmann, H., Kadow, C., Trachte, K.,, 2026: NUKLEUS-A First Convection-Permitting Multimodel Ensemble for Germany: Assessment of Future Changes in Temperature and Precipitation Extremes. J. Climate, 39, 6145-6168, https://doi.org/10.1175/JCLI-D-25-0613.1.
• DOI: 10.1016/j.wace.2025.100764, Hundhausen, M., Fowler, H.J., Feldmann, H., Pinto, J.G., 2025: Sub-hourly precipitation and rainstorm event profiles in a convection-permitting multi-GCM ensemble, Weather and Climate Extremes, 48, 100764
• DOI: doi:10.1016/j.jhydrol.2025.133607, Laux, P., Feldmann, D., Marra, F., Feldmann, H., Kunstmann, H., Trachte, K., Peleg, N., 2025: Assessing the Impact of Climate Change on Urban Flooding: Future Precipitation Extremes and Flood Risk Under +2°C and +3°C Scenariosournal of Hydrology, 661, Article no: 133607.
• DOI: 10.1016/j.wace.2024.100661, • Moemken J, Messori G, Pinto JG (2024): Windstorm losses in Europe – What to gain from damage datasets, Weather and Climate Extremes, 44, 100661, https://doi.org/10.1016/j.wace.2024.100661
• DOI: 10.5194/nhess-2024-16, • Moemken J, Alifdini I, Ramos AM, Georgiadis A, Brocklehurst A, Braun L, Pinto JG (2024): Insurance loss model vs meteorological loss index - How comparable are their loss esti-mates for European windstorms? Nat Hazards Earth Syst Sci (accepted),
• DOI: 10.1002/joc.8393, Hundhausen, M., Feldmann, H., Kohlhepp, R., & Pinto, J. G. (2024). Climate change signals of extreme precipitation return levels for Germany in a transient convection-permitting simulation ensemble. International Journal of Climatology, 1–18. https://doi.org/10.1002/joc.8393
• DOI: 10.1007/s00704-024-05179-z, • Stainoh F, Moemken J, Gouveia CM, Pinto JG (2024): A comparison of climate drivers’ im-pacts on silage maize yield shock in Germany, Theoretical and Applied Climatology, https://doi.org/10.1007/s00704-024-05179-z
• DOI: 10.5194/nhess-23-2873-2023, Hundhausen, M.; Feldmann, H.; Laube, N.; Pinto, J. G., 2023a: Future heat extremes and impacts in a convection-permitting climate ensemble over Germany. Natural Hazards and Earth System Sciences, 23 (8), 2873–2893. doi:10.5194/nhess-23-2873-2023
• DOI: 10.3390/w14040600, Ibebuchi, C., Schönbein, D., Adakudlu, M., Xoplaki, E. and Paeth, H. (2022a): Comparison of three techniques to adjust daily precipitation biases from regional climate models over Germany. Water 14, 600,
• DOI: 10.1007/s00382-022-06258-5, Ibebuchi, C., Schönbein, D. and Paeth, H. (2022b): On the added value of statistical post-processing of regional climate models to identify homogeneous patterns of summer rainfall anomalies in Germany. Climate Dynamics, doi:10.1007/s00382-022-06258-5.
• DOI: 10.1175/BAMS-D-22-0111.1, Diez-Sierra, J., Iturbide, M., Gutiérrez, J. M., Fernández, J., Milovac, J., Cofiño, A. S., Cimadevilla, E., Nikulin, G., Levavasseur, G., Kjellström, E., Bülow, K., Horányi, A., Brookshaw, A., García-Díez, M., Pérez, A., Baño-Medina, J., Ahrens, B., Alias, A., Ashfaq, M., Bukovsky, M., Buonomo, E., Caluwaerts, S., Chan Chou, S., Christensen, O. B., Ciarlo´, J. M., Coppola, E., Corre, L., Demory, M., Djurdjevic, V., Evans, J. P., Fealy, R., Feldmann, H., Jacob, D., Jayanarayanan, S., Katzfey, J., Keuler, K., Kittel, C., Levent Kurnaz, M., Laprise, R., Lionello, P., McGinnis, S., Mercogliano, P., Nabat, P., Önol, B., Ozturk, T., Panitz, H., Paquin, D., Pieczka, I., Raffaele, F., Reca Remedio, A., Scinocca, J., Sevault, F., Somot, S., Steger, C., Tangang, F., Teichmann, C., Termonia, P., Thatcher, M., Torma, C., van Meijgaard, E., Vautard, R., Warrach-Sagi, K., Winger, K., & Zittis, G. (2022). The worldwide C3S CORDEX grand ensemble: A major contribution to assess regional climate change in the IPCC AR6 Atlas, Bulletin of the American Meteorological Society (published online ahead of print 2022), https://doi.org/10.1175/BAMS-D-22-0111.1.
• Petrik, R., 2022: Flexible evaluation offline and within runtime environments, Presentation given at the CLM Assembly, Online Meeting, organized by FU Berlin and DWD and HEREON, Germany
• Petrik, R. and Beier, C. and Samtleben, N. and Keuler, K. and Rockel, B., 2022: Transition from COSMO to ICON - the recent state on EUR-CORDEX and convection-permitting scale, Presentation given at the CLM Assembly, Online-Meeting, organized by FU Berlin and DWD and HEREON, Germany
• DOI: 10.3390/w14040600, Ibebuchi, C., Schönbein, D., Adakudlu, M., Xoplaki, E. and Paeth, H. (2022a): Comparison of three techniques to adjust daily precipitation biases from regional climate models over Germany. Water 14, 600,
• Samtleben, N. and Petrik, R. and Keuler, K. and Rockel, B., 2022: On the transition to ICON-CLM: Long-term validation and evaluation of ICON and COSMO; Presentation given at the ICCARUS 2022, Online-Meeting, organized by DWD, Germany
• DOI: 10.5194/nhess-2022-137, Mohr, S., Ehret, U., Kunz, M., Ludwig, P., Caldas-Alvarez, A., Daniell, J. E., Ehmele, F., Feldmann, H., Franca, M. J., Gattke, C., Hundhausen, M., Knippertz, P., Küpfer, K., Mühr, B., Pinto, J. G., Quinting, J., Schäfer, A. M., Scheibel, M., Seidel, F., and Wisotzky, C.: A multi-disciplinary analysis of the exceptional flood event of July 2021 in central Europe. Part 1: Event description and analysis, Nat. Hazards Earth Syst. Sci. Discuss. [preprint], https://doi.org/10.5194/nhess-2022-137, in review, 2022.
• DOI: 10.1080/16000870.2020.1804294, Petrik, R., Geyer, B., & Rockel, B. (2021). On the diurnal cycle and variability of winds in the lower planetary boundary layer: evaluation of regional reanalyses and hindcasts. Tellus A: Dynamic Meteorology and Oceanography, 73(1), 1-28,
• Petrik, R. and Keuler, K. and Rockel, B., 2022: Towards transient aerosols in ICON-CLM - Impact of different aerosol climatologies; Presentation given at the EMS, Bonn, Germany
• DOI: 10.5194/nhess-2022-225, Ludwig, P., Ehmele, F., Franca, M. J., Mohr, S., Caldas-Alvarez, A., Daniell, J. E., Ehret, U., Feldmann, H., Hundhausen, M., Knippertz, P., Küpfer, K., Kunz, M., Mühr, B., Pinto, J. G., Quinting, J., Schäfer, A. M., Seidel, F., and Wisotzky, C.: A multi-disciplinary analysis of the exceptional flood event of July 2021 in central Europe. Part (2022): Historical context and relation to climate change, Nat. Hazards Earth Syst. Sci. Discuss
• DOI: doi:10.1007/s00382-022-06258-5, Ibebuchi, C., Schönbein, D. and Paeth, H. (2022b): On the added value of statistical post-processing of regional climate models to identify homogeneous patterns of summer rainfall anomalies in Germany. Climate Dynamics