I am a postdoctoral researcher focusing on recent (1950-2025) regional climate change in the Alsace-Vosges region. My research aims to characterize the regional manifestations of climate change and their impacts across four coherent sub-regions: the Vosges mountains, the foothills, the plain, and the metropolitan areas.
I am part of the ReClim-SWITCH working group.
Keywords: nonlinear dynamical systems, complex networks, climate data analysis, atmospheric dynamics, climate and weather extremes, numerical modelling, fractional partial differential equations
2019-2024 | Ph.D. in Physics with Distinction (Cum Laude), IFISC (Institute for Cross-Disciplinary Physics and Complex Systems), UIB-CSIC, Palma, Spain. Doctoral fellow of the Marie Skłodowska-Curie ITN CAFE: Climate Advanced Forecasting of Subseasonal Extremes. Thesis: Complex Systems Perspectives on Large-Scale Weather and Climate Variability Patterns Links: Manuscript ; Defence video recording. |
| 2017-2019 | M.Sc. in Computational Science and Engineering, TUM (Technische Universität München), Germany. Thesis (Faculty of Mathematics): Numerical continuation of fractional reaction–diffusion systems in pde2path |
| 2013-2017 | B.Sc. Physics, EPFL (Ecole Polytechnique Fédérale de Lausanne), Switzerland. Third year exchange: Uppsala University, Sweden |
Ehstand, N., Kuehn, C., & Soresina, C. (2021). Numerical continuation for fractional PDEs: sharp teeth and bloated snakes. Communications in Nonlinear Science and Numerical Simulation, 98, 105762. https://doi.org/10.1016/j.cnsns.2021.105762
Ehstand, N., Donner, R. V., López, C., & Hernández-García, E. (2021). Characteristic signatures of Northern Hemisphere blocking events in a Lagrangian flow network representation of the atmospheric circulation. Chaos: An Interdisciplinary Journal of Nonlinear Science, 31(9). https://doi.org/10.1063/5.0057409
Ehstand, N., Donner, R. V., López, C., & Hernández-García, E. (2023). Network percolation provides early warnings of abrupt changes in coupled oscillatory systems: An explanatory analysis. Physical Review E, 108(5). https://doi.org/10.1103/physreve.108.054207
Pérez‐Fernández, I., Barreiro, M., Ehstand, N., Hernández‐García, E., & López, C. (2024). Wave Breaking Events and Their Link to Rossby Wave Packets and Atmospheric Blockings During Southern Hemisphere Summer. Journal of Geophysical Research: Atmospheres, 129(5). https://doi.org/10.1029/2022jd038380
Ehstand, N., Donner, R. V., Lopez, C., Barreiro, M., & Hernandez-Garcia, E. (2025). The stochastic skeleton model for the Madden-Julian Oscillation with time-dependent observation-based forcing. EGUsphere [preprint]. https://doi.org/10.5194/egusphere-2025-343
