NPG cover
Executive editors: Christian Franzke, Ana M. Mancho, Daniel Schertzer & Olivier Talagrand
eISSN: NPG 1607-7946, NPGD 2198-5634

Nonlinear Processes in Geophysics (NPG) is an international, inter-/trans-disciplinary, non-profit journal devoted to breaking the deadlocks often faced by standard approaches in Earth and space sciences. It therefore solicits disruptive and innovative concepts and methodologies, as well as original applications of these to address the ubiquitous complexity in geoscience systems, and in interacting social and biological systems. Such systems are nonlinear, with responses strongly non-proportional to perturbations, and show an associated extreme variability across scales.

All sections of NPG are more than ever eager to deal with big data and artificial intelligence with new sensing, analysis, and simulation technologies. These encompass approaches ranging from data-driven research to mathematical physics.

Journal metrics

NPG is indexed in the Web of Science, Scopus, Google Scholar, etc. We refrain from displaying the journal metrics prominently on the landing page since citation metrics used in isolation do not describe importance, impact, or quality of a journal. However, these metrics can be found on the journal metrics page.

News

03 Dec 2025 New MS Word template available for manuscript preparation

The existing MS Word template for authors has been significantly expanded and now includes many important notes on the standard sections that must be included in the manuscript. Please visit the "Submission" page, section "Templates for your manuscript file" and download the new template before writing your next manuscript.

03 Dec 2025 New MS Word template available for manuscript preparation

The existing MS Word template for authors has been significantly expanded and now includes many important notes on the standard sections that must be included in the manuscript. Please visit the "Submission" page, section "Templates for your manuscript file" and download the new template before writing your next manuscript.

16 May 2025 New NPG Letter: Multifractality of climate networks

The authors have developed a systematic approach to study the climate system at multiple scales using climate networks, which have been previously used to study correlations between time series in space at only a single scale. Please read more.

16 May 2025 New NPG Letter: Multifractality of climate networks

The authors have developed a systematic approach to study the climate system at multiple scales using climate networks, which have been previously used to study correlations between time series in space at only a single scale. Please read more.

13 Mar 2025 New agreement between California Digital Library and Copernicus Publications

We are delighted to announce a new agreement between the California Digital Library and Copernicus Publications. The University of California will cover 50% of article processing charges (APCs) for manuscripts affiliated with any of their research units. Read more.

13 Mar 2025 New agreement between California Digital Library and Copernicus Publications

We are delighted to announce a new agreement between the California Digital Library and Copernicus Publications. The University of California will cover 50% of article processing charges (APCs) for manuscripts affiliated with any of their research units. Read more.

Recent papers

24 Nov 2025
On process-oriented conditional targeted covariance inflation (TCI) for 3D-volume radar data assimilation
Klaus Vobig, Roland Potthast, and Klaus Stephan
Nonlin. Processes Geophys., 32, 471–488, https://doi.org/10.5194/npg-32-471-2025,https://doi.org/10.5194/npg-32-471-2025, 2025
Short summary
21 Nov 2025
A tempered fractional Hawkes framework for finite-memory drought dynamics
Mauricio Herrera-Marín
EGUsphere, https://doi.org/10.5194/egusphere-2025-5401,https://doi.org/10.5194/egusphere-2025-5401, 2025
Preprint under review for NPG (discussion: open, 0 comments)
Short summary
12 Nov 2025
Quantifying the minimum ensemble size for asymptotic accuracy of the ensemble Kalman filter using the degrees of instability
Kota Takeda and Takemasa Miyoshi
EGUsphere, https://doi.org/10.5194/egusphere-2025-5144,https://doi.org/10.5194/egusphere-2025-5144, 2025
Preprint under review for NPG (discussion: open, 0 comments)
Short summary
04 Nov 2025
Bottom–up approach for mitigating extreme events with limited intervention options: a case study with Lorenz 96 model
Takahito Mitsui, Shunji Kotsuki, Naoya Fujiwara, Atsushi Okazaki, and Keita Tokuda
Nonlin. Processes Geophys., 32, 457–469, https://doi.org/10.5194/npg-32-457-2025,https://doi.org/10.5194/npg-32-457-2025, 2025
Short summary
03 Nov 2025
Boosting Ensembles for Statistics of Tails at Conditionally Optimal Advance Split Times
Justin Finkel and Paul A. O'Gorman
External preprint server, https://doi.org/10.48550/arXiv.2507.22310,https://doi.org/10.48550/arXiv.2507.22310, 2025
Preprint under review for NPG (discussion: open, 0 comments)
Short summary

Highlight articles

27 Feb 2025
Assessing Lagrangian coherence in atmospheric blocking
Henry Schoeller, Robin Chemnitz, Péter Koltai, Maximilian Engel, and Stephan Pfahl
Nonlin. Processes Geophys., 32, 51–73, https://doi.org/10.5194/npg-32-51-2025,https://doi.org/10.5194/npg-32-51-2025, 2025
Short summary Executive editor
21 Oct 2024
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
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
19 Sep 2024
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
25 Jun 2024
Evaluation of forecasts by a global data-driven weather model with and without probabilistic post-processing at Norwegian stations
John Bjørnar Bremnes, Thomas N. Nipen, and Ivar A. Seierstad
Nonlin. Processes Geophys., 31, 247–257, https://doi.org/10.5194/npg-31-247-2024,https://doi.org/10.5194/npg-31-247-2024, 2024
Short summary Executive editor

Notice on the current situation in Ukraine

To show our support for Ukraine, all fees for papers from authors (first or corresponding authors) affiliated to Ukrainian institutions are automatically waived, regardless if these papers are co-authored by scientists affiliated to Russian and/or Belarusian institutions. The only exception will be if the corresponding author or first contact (contractual partner of Copernicus) are from a Russian and/or Belarusian institution, in that case the APCs are not waived.

In accordance with current European restrictions, Copernicus Publications does not step into business relations with and issue APC-invoices (articles processing charges) to Russian and Belarusian institutions. The peer-review process and scientific exchange of our journals including preprint posting is not affected. However, these restrictions require that the first contact (contractual partner of Copernicus) has an affiliation and invoice address outside Russia or Belarus.