Nonlinear Processes in Geophysics
Nonlinear Processes in Geophysics
NPG

Research article

21 Feb 2025
Bridging Data Assimilation and Control: Ensemble Model Predictive Control for High-Dimensional Nonlinear Systems
Kenta Kurosawa, Atsushi Okazaki, Fumitoshi Kawasaki, and Shunji Kotsuki
EGUsphere, https://doi.org/10.5194/egusphere-2025-595,https://doi.org/10.5194/egusphere-2025-595, 2025
Preprint under review for NPG (discussion: open, 0 comments)
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17 Feb 2025
Improving dynamical climate predictions with machine learning: insights from a twin experiment framework
Zikang He, Julien Brajard, Yiguo Wang, Xidong Wang, and Zheqi Shen
EGUsphere, https://doi.org/10.5194/egusphere-2025-212,https://doi.org/10.5194/egusphere-2025-212, 2025
Preprint under review for NPG (discussion: open, 0 comments)
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14 Feb 2025
Exploring Complexity Measures for Analysis of Solar Wind Structures and Streams
Venla Koikkalainen, Emilia Kilpua, Simon Good, and Adnane Osmane
EGUsphere, https://doi.org/10.5194/egusphere-2025-106,https://doi.org/10.5194/egusphere-2025-106, 2025
Preprint under review for NPG (discussion: open, 0 comments)
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06 Feb 2025
The stochastic skeleton model for the Madden-Julian Oscillation with time-dependent observation-based forcing
Noemie Ehstand, Reik V. Donner, Cristobal Lopez, Marcelo Barreiro, and Emilio Hernandez-Garcia
EGUsphere, https://doi.org/10.5194/egusphere-2025-343,https://doi.org/10.5194/egusphere-2025-343, 2025
Preprint under review for NPG (discussion: open, 0 comments)
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22 Jan 2025
Scaling and intermittent properties of oceanic and atmospheric pCO2 time series and their difference in a turbulence framework
Kévin Robache, François G. Schmitt, and Yongxiang Huang
Nonlin. Processes Geophys., 32, 35–49, https://doi.org/10.5194/npg-32-35-2025,https://doi.org/10.5194/npg-32-35-2025, 2025
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22 Jan 2025
Solving a North-type energy balance model using boundary integral methods
Aksel Samuelsberg and Per Kristen Jakobsen
Nonlin. Processes Geophys., 32, 23–33, https://doi.org/10.5194/npg-32-23-2025,https://doi.org/10.5194/npg-32-23-2025, 2025
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07 Jan 2025
Fractal analysis of geomagnetic data to decipher pre-earthquake processes in the Andaman–Nicobar region, India
Rahul Prajapati and Kusumita Arora
Nonlin. Processes Geophys., 32, 1–21, https://doi.org/10.5194/npg-32-1-2025,https://doi.org/10.5194/npg-32-1-2025, 2025
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20 Dec 2024
Quantifying Variability in Lagrangian Particle Dispersal in Ocean Ensemble Simulations: an Information Theory Approach
Claudio M. Pierard, Siren Rühs, Laura Gómez-Navarro, Michael C. Denes, Florian Meirer, Thierry Penduff, and Erik van Sebille
EGUsphere, https://doi.org/10.5194/egusphere-2024-3847,https://doi.org/10.5194/egusphere-2024-3847, 2024
Preprint under review for NPG (discussion: open, 1 comment)
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20 Dec 2024
Finite-size local dimension as a tool for extracting geometrical properties of attractors of dynamical systems
Martin Bonte and Stéphane Vannitsem
EGUsphere, https://doi.org/10.5194/egusphere-2024-3915,https://doi.org/10.5194/egusphere-2024-3915, 2024
Revised manuscript under review for NPG (discussion: final response, 4 comments)
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19 Dec 2024
Intermittency in fluid and MHD turbulence analyzed through the prism of moment scaling predictions of multifractal models
Annick Pouquet, Raffaele Marino, Helene Politano, Yannick Ponty, and Duane Rosenberg
EGUsphere, https://doi.org/10.5194/egusphere-2024-3900,https://doi.org/10.5194/egusphere-2024-3900, 2024
Preprint under review for NPG (discussion: open, 2 comments)
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10 Dec 2024
Multifractal analysis of wind turbine power and rainfall from an operational wind farm – Part 1: Wind turbine power and the associated biases
Jerry Jose, Auguste Gires, Yelva Roustan, Ernani Schnorenberger, Ioulia Tchiguirinskaia, and Daniel Schertzer
Nonlin. Processes Geophys., 31, 587–602, https://doi.org/10.5194/npg-31-587-2024,https://doi.org/10.5194/npg-31-587-2024, 2024
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10 Dec 2024
Multifractal analysis of wind turbine power and rainfall from an operational wind farm – Part 2: Joint analysis of available wind power and rain intensity
Jerry Jose, Auguste Gires, Ernani Schnorenberger, Yelva Roustan, Daniel Schertzer, and Ioulia Tchiguirinskaia
Nonlin. Processes Geophys., 31, 603–624, https://doi.org/10.5194/npg-31-603-2024,https://doi.org/10.5194/npg-31-603-2024, 2024
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10 Dec 2024
Evaluation of Effectiveness of Intervention Strategy in Control Simulation Experiment through Comparison with Model Predictive Control
Rikuto Nagai, Yang Bai, Masaki Ogura, Shunji Kotsuki, and Naoki Wakamiya
Nonlin. Processes Geophys. Discuss., https://doi.org/10.5194/npg-2024-26,https://doi.org/10.5194/npg-2024-26, 2024
Preprint under review for NPG (discussion: final response, 2 comments)
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10 Dec 2024
Dynamic-Statistic Combined Ensemble Prediction and Impact Factors on China’s Summer Precipitation
Xiaojuan Wang, Zihan Yang, Shuai Li, Qingquan Li, and Guolin Feng
EGUsphere, https://doi.org/10.5194/egusphere-2024-3762,https://doi.org/10.5194/egusphere-2024-3762, 2024
Revised manuscript under review for NPG (discussion: final response, 6 comments)
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09 Dec 2024
Long-window hybrid variational data assimilation methods for chaotic climate models tested with the Lorenz 63 system
Philip David Kennedy, Abhirup Banerjee, Armin Köhl, and Detlef Stammer
External preprint server, https://doi.org/https://doi.org/10.48550/arXiv.2403.03166,https://doi.org/https://doi.org/10.48550/arXiv.2403.03166, 2024
Preprint under review for NPG (discussion: final response, 2 comments)
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05 Dec 2024
Dynamically optimal models of atmospheric motion
Alexander G. Voronovich
Nonlin. Processes Geophys., 31, 559–569, https://doi.org/10.5194/npg-31-559-2024,https://doi.org/10.5194/npg-31-559-2024, 2024
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05 Dec 2024
Inferring flow energy, space scales, and timescales: freely drifting vs. fixed-point observations
Aurelien Luigi Serge Ponte, Lachlan C. Astfalck, Matthew D. Rayson, Andrew P. Zulberti, and Nicole L. Jones
Nonlin. Processes Geophys., 31, 571–586, https://doi.org/10.5194/npg-31-571-2024,https://doi.org/10.5194/npg-31-571-2024, 2024
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03 Dec 2024
Multilevel Monte Carlo methods for ensemble variational data assimilation
Mayeul Destouches, Paul Mycek, Selime Gürol, Anthony T. Weaver, Serge Gratton, and Ehouarn Simon
EGUsphere, https://doi.org/10.5194/egusphere-2024-3628,https://doi.org/10.5194/egusphere-2024-3628, 2024
Preprint under review for NPG (discussion: final response, 2 comments)
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28 Nov 2024
Alignment of geophysical fields: a differential geometry perspective
Yicun Zhen, Valentin Resseguier, and Bertrand Chapron
External preprint server, https://doi.org/10.13140/RG.2.2.36204.37768,https://doi.org/10.13140/RG.2.2.36204.37768, 2024
Preprint under review for NPG (discussion: open, 7 comments)
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21 Nov 2024
Simulation and Data Assimilation in an Idealized Coupled Atmosphere-Ocean-Sea Ice Floe Model with Cloud Effects
Changhong Mou, Samuel N. Stechmann, and Nan Chen
Nonlin. Processes Geophys. Discuss., https://doi.org/10.5194/npg-2024-21,https://doi.org/10.5194/npg-2024-21, 2024
Preprint under review for NPG (discussion: open, 0 comments)
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20 Nov 2024
Ionospheric Chaos in Solar quiet Current due to Sudden Stratospheric Warming Events Across Europe-Africa Sector
Irewola Aaron Oludehinwa, Andrei Velichko, Olasunkanmi Isaac Olusola, Olawale Segun Bolaji, Norbert Marwan, Babaola O. Ogunsua, Abdullahi Ndzi Njah, and Timothy O. Ologun
EGUsphere, https://doi.org/10.5194/egusphere-2024-3554,https://doi.org/10.5194/egusphere-2024-3554, 2024
Preprint under review for NPG (discussion: final response, 2 comments)
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20 Nov 2024
Explaining the high skill of Reservoir Computing methods in El Niño prediction
Francesco Guardamagna, Claudia Wieners, and Henk Dijkstra
Nonlin. Processes Geophys. Discuss., https://doi.org/10.5194/npg-2024-24,https://doi.org/10.5194/npg-2024-24, 2024
Preprint under review for NPG (discussion: final response, 9 comments)
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13 Nov 2024
Learning extreme vegetation response to climate drivers with recurrent neural networks
Francesco Martinuzzi, Miguel D. Mahecha, Gustau Camps-Valls, David Montero, Tristan Williams, and Karin Mora
Nonlin. Processes Geophys., 31, 535–557, https://doi.org/10.5194/npg-31-535-2024,https://doi.org/10.5194/npg-31-535-2024, 2024
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06 Nov 2024
A robust numerical method for the generation and propagation of periodic finite-amplitude internal waves in natural waters using high-accuracy simulations
Pierre Lloret, Peter J. Diamessis, Marek Stastna, and Greg N. Thomsen
Nonlin. Processes Geophys., 31, 515–533, https://doi.org/10.5194/npg-31-515-2024,https://doi.org/10.5194/npg-31-515-2024, 2024
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28 Oct 2024
On the hydrostatic approximation in rotating stratified flow
Achim Wirth
EGUsphere, https://doi.org/10.5194/egusphere-2024-3307,https://doi.org/10.5194/egusphere-2024-3307, 2024
Preprint under review for NPG (discussion: final response, 3 comments)
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21 Oct 2024
| Highlight paper
Energy transfer from internal solitary waves to turbulence via high-frequency internal waves: seismic observations in the northern South China Sea
Linghan Meng, Haibin Song, Yongxian Guan, Shun Yang, Kun Zhang, and Mengli Liu
Nonlin. Processes Geophys., 31, 477–495, https://doi.org/10.5194/npg-31-477-2024,https://doi.org/10.5194/npg-31-477-2024, 2024
Short summary Executive editor
21 Oct 2024
| Highlight paper
A global analysis of the fractal properties of clouds revealing anisotropy of turbulence across scales
Karlie N. Rees, Timothy J. Garrett, Thomas D. DeWitt, Corey Bois, Steven K. Krueger, and Jérôme C. Riedi
Nonlin. Processes Geophys., 31, 497–513, https://doi.org/10.5194/npg-31-497-2024,https://doi.org/10.5194/npg-31-497-2024, 2024
Short summary Executive editor
21 Oct 2024
Bayesian inference based on algorithms: MH, HMC, Mala and Lip-Mala for Prestack Seismic Inversion
Richard Perez-Roa, Saba Infante, Gabriel Barragan, and Raul Manzanilla
EGUsphere, https://doi.org/10.5194/egusphere-2024-2694,https://doi.org/10.5194/egusphere-2024-2694, 2024
Revised manuscript under review for NPG (discussion: final response, 6 comments)
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08 Oct 2024
A comparison of two nonlinear data assimilation methods
Vivian A. Montiforte, Hans E. Ngodock, and Innocent Souopgui
Nonlin. Processes Geophys., 31, 463–476, https://doi.org/10.5194/npg-31-463-2024,https://doi.org/10.5194/npg-31-463-2024, 2024
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07 Oct 2024
Cairns-Tsallis distribution applied to differences of magnetic field intensity in solar wind
Ewin Sánchez and Pedro Vega-Jorquera
Nonlin. Processes Geophys. Discuss., https://doi.org/10.5194/npg-2024-20,https://doi.org/10.5194/npg-2024-20, 2024
Revised manuscript under review for NPG (discussion: final response, 4 comments)
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23 Sep 2024
Multifractal structure and Gutenberg–Richter parameter associated with volcanic emissions of high energy in Colima, Mexico (years 2013–2015)
Marisol Monterrubio-Velasco, Xavier Lana, and Raúl Arámbula-Mendoza
Nonlin. Processes Geophys., 31, 449–461, https://doi.org/10.5194/npg-31-449-2024,https://doi.org/10.5194/npg-31-449-2024, 2024
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20 Sep 2024
Rate-Induced Transitions and Noise-Driven Resilience in Vegetation Pattern Dynamics
Lilian Vanderveken and Michel Crucifix
EGUsphere, https://doi.org/10.5194/egusphere-2024-2830,https://doi.org/10.5194/egusphere-2024-2830, 2024
Revised manuscript accepted for NPG (discussion: final response, 3 comments)
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19 Sep 2024
| Highlight paper
Representation learning with unconditional denoising diffusion models for dynamical systems
Tobias Sebastian Finn, Lucas Disson, Alban Farchi, Marc Bocquet, and Charlotte Durand
Nonlin. Processes Geophys., 31, 409–431, https://doi.org/10.5194/npg-31-409-2024,https://doi.org/10.5194/npg-31-409-2024, 2024
Short summary Executive editor
19 Sep 2024
Characterisation of Dansgaard–Oeschger events in palaeoclimate time series using the matrix profile method
Susana Barbosa, Maria Eduarda Silva, and Denis-Didier Rousseau
Nonlin. Processes Geophys., 31, 433–447, https://doi.org/10.5194/npg-31-433-2024,https://doi.org/10.5194/npg-31-433-2024, 2024
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19 Sep 2024
On Process-Oriented Conditional Targeted Covariance Inflation (TCI) for 3D-Volume Radar Data Assimilation
Klaus Vobig, Roland Potthast, and Klaus Stephan
EGUsphere, https://doi.org/10.5194/egusphere-2024-2876,https://doi.org/10.5194/egusphere-2024-2876, 2024
Preprint under review for NPG (discussion: final response, 2 comments)
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18 Sep 2024
On dissipation timescales of the basic second-order moments: the effect on the energy and flux budget (EFB) turbulence closure for stably stratified turbulence
Evgeny Kadantsev, Evgeny Mortikov, Andrey Glazunov, Nathan Kleeorin, and Igor Rogachevskii
Nonlin. Processes Geophys., 31, 395–408, https://doi.org/10.5194/npg-31-395-2024,https://doi.org/10.5194/npg-31-395-2024, 2024
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18 Sep 2024
Optimal Disturbances of Blocking: A Barotropic View
Bin Shi, Dehai Luo, and Wenqi Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2024-2747,https://doi.org/10.5194/egusphere-2024-2747, 2024
Revised manuscript under review for NPG (discussion: final response, 3 comments)
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