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Annales Geophysicae
Annales Geophysicae
ANGEO
 

Annales Geophysicae 

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Open accessArticle level metricsModerate APCs
ANGEO cover
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Editors-in-chief: Ioannis A. Daglis, Christoph Jacobi & Ingrid Mann
eISSN: ANGEO1432-0576, ANGEOD2568-6402

Annales Geophysicae (ANGEO) is a not-for-profit international multi- and inter-disciplinary scientific open-access journal in the field of solar–terrestrial and planetary sciences. ANGEO publishes original articles and short communications (letters) on research of the Sun–Earth system, including the science of space weather, solar–terrestrial plasma physics, the Earth's ionosphere and atmosphere, the magnetosphere, and the study of planets and planetary systems, the interaction between the different spheres of a planet, and the interaction across the planetary system. Topics range from space weathering, planetary magnetic field, and planetary interior and surface dynamics to the formation and evolution of planetary systems.

Journal metrics

ANGEO 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 thejournal metrics page.

News

13 Feb 2026University of Western Ontario partners with Copernicus Publications to support open-access publishing

Copernicus Publications has signed a new agreement with Western Libraries at the University of Western Ontario, providing a 50% APC reduction for eligible corresponding authors submitting from 1 January 2026. Please read more.

13 Feb 2026University of Western Ontario partners with Copernicus Publications to support open-access publishing

Copernicus Publications has signed a new agreement with Western Libraries at the University of Western Ontario, providing a 50% APC reduction for eligible corresponding authors submitting from 1 January 2026. Please read more.

03 Dec 2025New 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 2025New 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.

13 Mar 2025New 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 2025New 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

17 Feb 2026
Effect of Ionospheric Variability on the Electron Energy Spectrum estimated from Incoherent Scatter Radar Measurements
Oliver Stalder, Björn Gustavsson, and Ilkka Virtanen
Ann. Geophys., 44, 123–135,https://doi.org/10.5194/angeo-44-123-2026,https://doi.org/10.5194/angeo-44-123-2026, 2026
Short summary
Short summary
The rapid changes in ion composition during auroral are dynamically modeled by integrating the coupled continuity equations for 15 ionospheric species. The effect of the ionospheric variation on the inversion of incoherent scatter radar (ISR) electron density profiles to differential energy spectra of precipitating electrons is studied. A systematic overestimation at high electron energies can be removed using a dynamic model. Comparisons are made with static and steady-state ionospheric models.
17 Feb 2026
JUICE-JANUS observations of Earth in preparation for the JANUS investigation of Jupiter’s atmosphere
Ricardo Hueso, Arrate Antuñano, Luisa María Lara, Katrin Stephan, Angelo Zinzi, Athena Coustenis, Yoav Yair, Mitsuteru Sato, Junichi Haruyama, Amy Simon, Cecilia Tubiana, Luca Penasa, Livio Agostini, Alice Luchetti, Alessio Aboudan, Michael Aye, Elke Kersten, Klaus-Dieter Matz, Romolo Politti, Frank Trauthan, Ry Evill, Ines Belgacem, Takahashi Yukihiro, Jose María Castro-Marín, Vincenzo Della Corte, Stubbe Hviid, Thomas Roatsch, Nicole Schmitz, Manish Patel, Ganna Portyankina, and Pasquale Palumbo
EGUsphere,https://doi.org/10.5194/egusphere-2026-710,https://doi.org/10.5194/egusphere-2026-710, 2026
Preprint under review for ANGEO(discussion: open, 0 comments)
Short summary
Short summary
JANUS, the high-resolution camera on ESA’s JUICE mission, observed Earth during the August 2024 Lunar–Earth Gravity Assist. Images from a close flyby captured night- and day-side atmospheric phenomena, and a distant view resulted in a low-resolution Earth portrait. These observations validate JANUS performance and demonstrate the instrument’s capabilities. We focus our analysis on characterizing atmospheric systems that provide relevant examples for future studies of Jupiter’s atmosphere.
17 Feb 2026
MAJIS performances in the infrared during the JUICE 2024 Earth fly-by: comparisons with IASI measurements and sensitivity to trace species
Sandrine Guerlet, Raymond Armante, Ninon Lauzanne, François Poulet, Yves Langevin, Sébastien Rodriguez, Leigh Fletcher, Thierry Fouchet, Giuseppe Piccioni, and Alessandra Migliorini
EGUsphere,https://doi.org/10.5194/egusphere-2026-805,https://doi.org/10.5194/egusphere-2026-805, 2026
Preprint under review for ANGEO(discussion: open, 0 comments)
Short summary
Short summary
The JUpiter ICy moons Explorer spacecraft (JUICE) flew by the Moon and Earth on 19 and 20th August 2024, which was an excellent opportunity to test its instruments before its arrival at Jupiter in 2031. Here we evaluate the performances of one of its instruments, the Moon and Jupiter Imaging Spectrometer (MAJIS). We compared MAJIS observations of the Earth with measurements acquired on the same day by another instrument orbiting the Earth, and find an excellent match between the two instruments.
16 Feb 2026
Case Studies on Mesospheric Fronts at Low Latitudes over Brazil
Efua A. Ogobor, Igo Paulino, Vania F. Andrioli, Cristiano M. Wrasse, Hisao Takahashi, Amauri F. Medeiros, Paulo P. Batista, and Prosper K. Nyassor
EGUsphere,https://doi.org/10.5194/egusphere-2025-6569,https://doi.org/10.5194/egusphere-2025-6569, 2026
Preprint under review for ANGEO(discussion: open, 0 comments)
Short summary
Short summary
We studied four rare night-sky wave events over Brazil using coordinated all-sky airglow imager, meteor wind radar, and sodium laser temperature measurements. We found two undular and turbulent fronts shaped by layered winds and temperature, improving forecasts of upper-atmosphere changes that affect communications to understand how they form.
13 Feb 2026
Analysis of 3GM High Accuracy Accelerometer data collected during JUICE Lunar Earth Gravity Assist
Umberto De Filippis, Paolo Cappuccio, Mauro Di Benedetto, Ivan di Stefano, Daniele Durante, and Luciano Iess
EGUsphere,https://doi.org/10.5194/egusphere-2026-673,https://doi.org/10.5194/egusphere-2026-673, 2026
Preprint under review for ANGEO(discussion: open, 0 comments)
Short summary
Short summary
The High Accuracy Accelerometer calibrated data collected during the JUICE Lunar Earth Gravity assist flyby was compared with predicted non-gravitational signals derived from analytical models, showing good agreement. Moon gravity gradient and thermoelastic displacement of solar array during the penumbra phases have been detected. HAA detected also unexpected signals such as instrument interference and outgassing event.

Highlight articles

10 Dec 2025
Global inductive magnetosphere-ionosphere- thermosphere coupling
Karl M. Laundal, Andreas S. Skeidsvoll, Beatrice Popescu Braileanu, Spencer M. Hatch, Nils Olsen, and Heikki Vanhamäki
Ann. Geophys., 43, 803–833,https://doi.org/10.5194/angeo-43-803-2025,https://doi.org/10.5194/angeo-43-803-2025, 2025
Short summaryEditor-in-chief
Short summary
The ionosphere is where Earth’s atmosphere overlaps with a gas of charged particles in space. There, collisions with neutral air and electromagnetic forces driven by the solar wind control plasma motion. We created a global model that includes magnetic induction, explaining how electric currents and fields change, offering a more accurate view of atmosphere–space coupling than conventional models based on electric circuits.
Editor-in-chief
The paper represents a significant step forward in the numerical modelling of global ionospheric electrodynamics, incorporating the time-dependent effects of magnetic induction, with the potential for further extension to other planets in the Solar System.
14 Nov 2025
A statistical study of the O2 atmospheric band aurora observed by the Swedish satellite MATS
Judit Pérez-Coll Jiménez, Nickolay Ivchenko, Ceona Lindstein, Lukas Krasauskas, Jonas Hedin, Donal P. Murtagh, Linda Megner, Björn Linder, and Jörg Gumbel
Ann. Geophys., 43, 701–707,https://doi.org/10.5194/angeo-43-701-2025,https://doi.org/10.5194/angeo-43-701-2025, 2025
Short summaryEditor-in-chief
Short summary
This study uses images taken by the Swedish satellite MATS (Mesospheric Airglow Tomography and Spectroscopy) to conduct a statistical analysis of the molecular oxygen atmospheric band emissions in the aurora. This auroral emission can not be observed from the ground, making it one of the least understood auroral emissions. Our results provide a new dataset with information on the peak altitude, geomagnetic location, and auroral intensity of 378 events detected between February and April 2023.
Editor-in-chief
This paper presents a statistical analysis of the aurora observed by the Swedish MATS satellite. These observations are new and can be an important contribution to high-latitude mesosphere/lower thermosphere science.
29 Oct 2025
Properties of large-amplitude kilometer-scale field-aligned currents at auroral latitudes, as derived from Swarm satellites
Yun-Liang Zhou and Hermann Lühr
Ann. Geophys., 43, 667–686,https://doi.org/10.5194/angeo-43-667-2025,https://doi.org/10.5194/angeo-43-667-2025, 2025
Short summaryEditor-in-chief
Short summary
By using magnetic field recordings sampled at 50 Hz by Swarm A and C satellites around the quasi-coplanar orbit configuration, near 1 October 2021, we investigate the properties of kilometer-scale field-aligned currents (FACs) at auroral latitudes. The kilometer-scale (0.2-5 km) FACs exhibit short-lived (<1 s) randomly appearing large current density spikes (partly exceeding 100 µA m-2). Preferred occurrences are the noon to prenoon (nightside to dusk) sector around 80° (70°) MLat, respectively.
Editor-in-chief
This research significantly enhances our understanding of small-scale field-aligned currents observed in the cusp and auroral regions of the high-latitude ionosphere. The investigation utilizes dual-spacecraft high-resolution magnetic field measurements of the Swarm mission to reveal new characteristics of field-aligned currents across multiple scale sizes and temporal variations spanning 0.04 to 5 seconds.
20 Oct 2025
Effects of geomagnetic mirror force and pitch angles of precipitating electrons on ionization of the polar upper atmosphere
Tomotaka M. Tanaka, Yasunobu Ogawa, Yuto Katoh, Mizuki Fukizawa, Anton Artemyev, Vassilis Angelopoulos, Xiao-Jia Zhang, Yoshimasa Tanaka, and Akira Kadokura
Ann. Geophys., 43, 621–631,https://doi.org/10.5194/angeo-43-621-2025,https://doi.org/10.5194/angeo-43-621-2025, 2025
Short summaryEditor-in-chief
Short summary
The magnetic mirror force bends the orbits of electrons precipitating into the atmosphere. It has been suggested that relativistic electrons make much less ionization due to the force than if it did not exist, but the actual effectivity in the atmospheric electron density has not been revealed. We used conjugated observational data from the ELFIN (Electron Losses and Fields INvestigation) satellite and the EISCAT (European Incoherent SCATter scientific radar system) Tromsø radar to find that the electron density decreased by about 40 % at 80 km altitude because of the force.
Editor-in-chief
The authors studied the effects of the geomagnetic mirror force on electron density enhancements in the polar atmosphere due to energetic electron precipitation. Considering this phenomenon in simulations this substantially reduced electron density, which was veryfied by observations. This could have wide consequences for the improvement of atmospheric ionization models.
03 Jul 2025
First observations of continuum emission in dayside aurora
Noora Partamies, Rowan Dayton-Oxland, Katie Herlingshaw, Ilkka Virtanen, Bea Gallardo-Lacourt, Mikko Syrjäsuo, Fred Sigernes, Takanori Nishiyama, Toshi Nishimura, Mathieu Barthelemy, Anasuya Aruliah, Daniel Whiter, Lena Mielke, Maxime Grandin, Eero Karvinen, Marjan Spijkers, and Vincent E. Ledvina
Ann. Geophys., 43, 349–367,https://doi.org/10.5194/angeo-43-349-2025,https://doi.org/10.5194/angeo-43-349-2025, 2025
Short summaryEditor-in-chief
Short summary
We studied the first broad band emissions, called continuum, in the dayside aurora. They are similar to Strong Thermal Emission Velocity Enhancement (STEVE) with white-, pale-pink-, or mauve-coloured light. But unlike STEVE, they follow the dayside aurora forming rays and other dynamic shapes. We used ground optical and radar observations and found evidence of heating and upwelling of both plasma and neutral air. This study provides new information on conditions for continuum emission, but its understanding will require further work.
Editor-in-chief
The manuscript reports the first observations of continuum emission at the poleward boundary of the dayside auroral oval. The unique measurements show that a number of different emission lines and bands contribute to the broadband continuum emission. Even emission structures in the near and far infrared were observed, suggesting that multiple emitting species are responsible for the observed spectral enhancements. The authors suggest that the interplay of different heating mechanisms may be an important factor in the generation of high-latitude continuum emissions.

More highlight articlesAll EGU highlight articles

Notice on the current situation in Ukraine

To show our support for Ukraine, all fees for papers from authors (first or corresponding authors) affiliated toUkrainian 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) toRussian 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.


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