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

10 Feb 2025 Thank you to all our referees in 2024!

A big thank you to all referees for their volunteer work in providing fair, thorough, and constructive peer-review reports! Through their invaluable contribution our interactive open-access journals maintain their high scientific standards and their ongoing success.

10 Feb 2025 Thank you to all our referees in 2024!

A big thank you to all referees for their volunteer work in providing fair, thorough, and constructive peer-review reports! Through their invaluable contribution our interactive open-access journals maintain their high scientific standards and their ongoing success.

05 Feb 2025 Copernicus Publications and all journals left Twitter

The Copernicus Twitter account as well as all Twitter accounts of journals published by us have been deactivated. There will be no automatic feeds of newly posted preprints or published journal articles anymore, we do not actively tweet, and the status informs that the accounts are no longer maintained. Twitter is no longer linked from the journal websites or in the share section of the preprint or journal article HTML pages.

05 Feb 2025 Copernicus Publications and all journals left Twitter

The Copernicus Twitter account as well as all Twitter accounts of journals published by us have been deactivated. There will be no automatic feeds of newly posted preprints or published journal articles anymore, we do not actively tweet, and the status informs that the accounts are no longer maintained. Twitter is no longer linked from the journal websites or in the share section of the preprint or journal article HTML pages.

19 Dec 2024 ResearchGate and institutional agreements

We are pleased to announce that scientists associated with our 38 library partners representing 350 universities and research centres as well as 300 institutions from Research4Life countries will be informed directly about APC coverage when browsing our articles on ResearchGate. Read more.

19 Dec 2024 ResearchGate and institutional agreements

We are pleased to announce that scientists associated with our 38 library partners representing 350 universities and research centres as well as 300 institutions from Research4Life countries will be informed directly about APC coverage when browsing our articles on ResearchGate. Read more.

Recent papers

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)
Short summary
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)
Short summary
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)
Short summary
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
Short summary
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
Short summary

Highlight articles

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
03 Nov 2023
Rate-induced tipping in ecosystems and climate: the role of unstable states, basin boundaries and transient dynamics
Ulrike Feudel
Nonlin. Processes Geophys., 30, 481–502, https://doi.org/10.5194/npg-30-481-2023,https://doi.org/10.5194/npg-30-481-2023, 2023
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.