NPG cover
Executive editors: Ana M. Mancho, Daniel Schertzer, Olivier Talagrand & Stéphane Vannitsem

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.

IF value: 1.740
IF1.740
IF 5-year value: 1.770
IF 5-year1.770
CiteScore value: 3.7
CiteScore3.7
h5-index value: 18
h5-index18
News
21 Dec 2021 Season's greetings from Copernicus and review deadline extensions

At the end of the year, we would like to express our deep gratitude for our collaboration with all editors, referees, and authors in 2021. Please take a look at our Christmas card. Since our virtual office is closed from 23 Dec to 2 Jan and a significant number of editors and referees pause their work over the Christmas days, we extended all journal review deadlines: deadlines expiring shortly before or over Christmas have been extended to the week after and deadlines expiring after Christmas or over New Year have been extended to after New Year’s Day. Season's greetings and a happy New Year. Please stay healthy.

21 Dec 2021 Season's greetings from Copernicus and review deadline extensions

At the end of the year, we would like to express our deep gratitude for our collaboration with all editors, referees, and authors in 2021. Please take a look at our Christmas card. Since our virtual office is closed from 23 Dec to 2 Jan and a significant number of editors and referees pause their work over the Christmas days, we extended all journal review deadlines: deadlines expiring shortly before or over Christmas have been extended to the week after and deadlines expiring after Christmas or over New Year have been extended to after New Year’s Day. Season's greetings and a happy New Year. Please stay healthy.

01 Oct 2021 First insights from new EGU author survey

In April 2021 the EGU Publications Committee launched the first author survey to routinely ask authors about their publishing experience in EGU journals, in order to learn more about how EGU and Copernicus can serve the scientific community with their publications. Over the last 6 months, 160 contact authors answered the survey representing about 10% of the papers published during this time. We are delighted about the positive feedback and thank all authors. Please read the full report.

01 Oct 2021 First insights from new EGU author survey

In April 2021 the EGU Publications Committee launched the first author survey to routinely ask authors about their publishing experience in EGU journals, in order to learn more about how EGU and Copernicus can serve the scientific community with their publications. Over the last 6 months, 160 contact authors answered the survey representing about 10% of the papers published during this time. We are delighted about the positive feedback and thank all authors. Please read the full report.

30 Jun 2021 Update of journal metrics

The journal metrics were updated and the current numbers are available from the journal metrics overview.

30 Jun 2021 Update of journal metrics

The journal metrics were updated and the current numbers are available from the journal metrics overview.

Recent papers
12 Jan 2022
Rigid Sets and Coherent Sets in Realistic Ocean Flows
Florian Feppon and Pierre Lermusiaux
Nonlin. Processes Geophys. Discuss., https://doi.org/10.5194/npg-2022-1,https://doi.org/10.5194/npg-2022-1, 2022
Preprint under review for NPG (discussion: open, 0 comments)
Short summary
10 Jan 2022
A waveform skewness index for measuring time series nonlinearity and its applications to the ENSO–Indian monsoon relationship
Justin Schulte, Frederick Policelli, and Benjamin Zaitchik
Nonlin. Processes Geophys., 29, 1–15, https://doi.org/10.5194/npg-29-1-2022,https://doi.org/10.5194/npg-29-1-2022, 2022
Short summary
07 Jan 2022
The Empirical Adaptive Wavelet Decomposition (EAWD): An adaptive decomposition for the variability analysis of observation time series in atmospheric science
Olivier Delage, Thierry Portafaix, Hassan Bencherif, Alain Bourdier, and Emma Lagracie
Nonlin. Processes Geophys. Discuss., https://doi.org/10.5194/npg-2021-37,https://doi.org/10.5194/npg-2021-37, 2022
Preprint under review for NPG (discussion: open, 0 comments)
Short summary
04 Jan 2022
Integrated hydrodynamic and machine learning models for compound flooding prediction in a data-scarce estuarine delta
Joko Sampurno, Valentin Vallaeys, Randy Ardianto, and Emmanuel Hanert
Nonlin. Processes Geophys. Discuss., https://doi.org/10.5194/npg-2021-36,https://doi.org/10.5194/npg-2021-36, 2022
Preprint under review for NPG (discussion: open, 0 comments)
Short summary
23 Dec 2021
Inferring the instability of a dynamical system from the skill of data assimilation exercises
Yumeng Chen, Alberto Carrassi, and Valerio Lucarini
Nonlin. Processes Geophys., 28, 633–649, https://doi.org/10.5194/npg-28-633-2021,https://doi.org/10.5194/npg-28-633-2021, 2021
Short summary
Highlight articles
17 Sep 2020
Review article: Hilbert problems for the climate sciences in the 21st century – 20 years later
Michael Ghil
Nonlin. Processes Geophys., 27, 429–451, https://doi.org/10.5194/npg-27-429-2020,https://doi.org/10.5194/npg-27-429-2020, 2020
Short summary
19 May 2020
Effects of upwelling duration and phytoplankton growth regime on dissolved-oxygen levels in an idealized Iberian Peninsula upwelling system
João H. Bettencourt, Vincent Rossi, Lionel Renault, Peter Haynes, Yves Morel, and Véronique Garçon
Nonlin. Processes Geophys., 27, 277–294, https://doi.org/10.5194/npg-27-277-2020,https://doi.org/10.5194/npg-27-277-2020, 2020
Short summary
17 Apr 2020
Brief communication: Residence time of energy in the atmosphere
Carlos Osácar, Manuel Membrado, and Amalio Fernández-Pacheco
Nonlin. Processes Geophys., 27, 235–237, https://doi.org/10.5194/npg-27-235-2020,https://doi.org/10.5194/npg-27-235-2020, 2020
Short summary
03 Apr 2020
Baroclinic and barotropic instabilities in planetary atmospheres: energetics, equilibration and adjustment
Peter Read, Daniel Kennedy, Neil Lewis, Hélène Scolan, Fachreddin Tabataba-Vakili, Yixiong Wang, Susie Wright, and Roland Young
Nonlin. Processes Geophys., 27, 147–173, https://doi.org/10.5194/npg-27-147-2020,https://doi.org/10.5194/npg-27-147-2020, 2020
Short summary
22 Nov 2019
Compacting the description of a time-dependent multivariable system and its multivariable driver by reducing the state vectors to aggregate scalars: the Earth's solar-wind-driven magnetosphere
Joseph E. Borovsky and Adnane Osmane
Nonlin. Processes Geophys., 26, 429–443, https://doi.org/10.5194/npg-26-429-2019,https://doi.org/10.5194/npg-26-429-2019, 2019
Short summary