Annales Geophysicae
Annales Geophysicae
ANGEO

Regular paper

23 Apr 2026
Critical Slowing Down in the Geomagnetic Ap Index as an Early Warning Signal for Major Geomagnetic Storms
Ryan Malone
EGUsphere, https://doi.org/10.5194/egusphere-2026-1716,https://doi.org/10.5194/egusphere-2026-1716, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
23 Apr 2026
Next-generation Ionospheric Model for Operations – validation and demonstration for space weather and research
Angeline G. Burrell, Sarah McDonald, Dustin Hickey, Meghan Burleigh, Eliana Nossa, Christopher A. Metzler, Manbharat Dhadly, Jennifer L. Tate, and Ellen J. Wagner
Ann. Geophys., 44, 303–329, https://doi.org/10.5194/angeo-44-303-2026,https://doi.org/10.5194/angeo-44-303-2026, 2026
Short summary
23 Apr 2026
Effect of a non-hydrostatic core-mantle boundary on the nutations and Length-of-day of Mars
Marta Folgueira López, Véronique Dehant, Mihaela Puica, and Tim Van Hoolst
Ann. Geophys., 44, 287–301, https://doi.org/10.5194/angeo-44-287-2026,https://doi.org/10.5194/angeo-44-287-2026, 2026
Short summary
22 Apr 2026
Flying through the plasmasphere to optimize low energy ion measurements
Gabriella Stenberg Wieser, Martin Wieser, Stas Barabash, Philipp Wittmann, Leif Kalla, Markus Fränz, Elias Roussos, Audrey Vorburger, Peter Wurz, Jan-Erik Wahlund, Pontus C. Brandt, Yoshifumi Futaana, Manabu Shimoyama, Angèle Pontoni, André Galli, Andreas Riedo, George Ho, Donald G. Mitchell, George Clark, Peter Kollmann, Malamati Gkioulidou, Leonardo Regoli, Norbert Krupp, Robert Wimmer-Schweingruber, Kazushi Asamura, Esa Kallio, Andrea Opitz, Manuel Grande, Andrew Coates, Geraint Jones, Theodoros Sarris, Andrey Fedorov, Nicolas André, and Ján Baláž
EGUsphere, https://doi.org/10.5194/egusphere-2026-2039,https://doi.org/10.5194/egusphere-2026-2039, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
22 Apr 2026
Ion composition of the Earth plasmasphere observed by the PEP JEI and RPWI instruments on the JUICE spacecraft
Markus Fraenz, Henning Fischer, Norbert Krupp, Elias Roussos, Philipp Wittmann, Patrick Bambach, Jan-Erik Wahlund, Gabriella Stenberg Wieser, Stas Barabash, Mika Holmberg, Maryam Zeroual, Pontus Brandt, Peter Wurz, Martin Wieser, Yoshifumi Futaana, Manabu Shimoyama, Angele Pontoni, Audrey Vorburger, Andre Galli, Andreas Riedo, George Ho, Donald Mitchell, George Clark, Peter Kollmann, Malamati Gkioulidou, Leonardo Regoli, Robert Wimmer-Schweingruber, Kazushi Asamura, Esa Kallio, Andrea Opitz, Manuel Grande, Andrew Coates, Geraint Jones, Theodoros Sarris, Andrey Fedorov, Nicolas André, and Ján Baláž
EGUsphere, https://doi.org/10.5194/egusphere-2026-2030,https://doi.org/10.5194/egusphere-2026-2030, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
21 Apr 2026
First Energetic Neutral Atom images of the Earth’s magnetosphere from the JENI detector on board the JUICE mission during the Lunar and Earth Gravity Assist
Konstantinos Dialynas, Matina Gkioulidou, Donald Mitchell, Pontus Brandt, George Clark, Elias Roussos, Peter Kollmann, Leonardo Regoli, Frederic Allegrini, Nicolas Andre, Xianzhe Jia, Krishan Khurana, Carol Paty, Stas Barabash, and Peter Wurz
EGUsphere, https://doi.org/10.5194/egusphere-2026-2062,https://doi.org/10.5194/egusphere-2026-2062, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
21 Apr 2026
Propagation of interplanetary (IP) shocks near the Earth
Masatoshi Yamauchi, Yoshihiro Yokoyama, Tsubasa Kotani, and Jürgen Matzka
EGUsphere, https://doi.org/10.5194/egusphere-2026-1517,https://doi.org/10.5194/egusphere-2026-1517, 2026
Preprint under review for ANGEO (discussion: open, 1 comment)
Short summary
21 Apr 2026
Surface charging of the JUICE spacecraft during the 2024 Earth gravity assist
Maryam Zeroual, Mika K. G. Holmberg, Francois Gutierrez, Fredrik L. Johansson, Jan-Erik Wahlund, Markus Fräenz, Pierre Henri, Xavier Vallieres, and Alexandra R. Fogg
EGUsphere, https://doi.org/10.5194/egusphere-2026-2068,https://doi.org/10.5194/egusphere-2026-2068, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
17 Apr 2026
Morphological and Spectrophotometric exploitation of JANUS LEGA Dataset: Langrenus impact crater characterization and evolution of the highland "isthmus" between Mare Fecunditatis and Mare Tranquillitatis
Alice Lucchetti, Matteo Massironi, Klaus Gwinner, Thomas Kenkmann, Luca Penasa, Namitha R. Baby, Laura Rotzoll, Oguzcan Karagoz, Juan L. Rizos, Maurizio Pajola, Federico Tosi, Sonia Fornasier, Filippo Tusberti, Katrin Stephan, Riccardo Pozzobon, Javier E. Suarez-Valencia, Davide Cagnin, Francesca Zambon, Gianluca Chiarolanza, Athena Coustenis, Lorenza Giacomini, Ernst Hauber, Simone Marchi, Pietro Matteoni, Giuseppe Mitri, Costanza Rossi, Ricardo Hueso, Alessio Aboudan, Livio Agostini, Elke Kersten, Klaus D. Matz, Romolo Politi, Frank Trauthan, Cecilia Tubiana, Michael Aye, Angelo Zinzi, Ry Evill, Ines Belgacem, Jose M. Castro-Marin, Vincenzo Della Corte, Stubbe Hviid, Thomas Roatsch, Nicole Schmitz, Luisa M. Lara, Manish R. Patel, Ganna Portyankina, Pasquale Palumbo, and the JANUS team
EGUsphere, https://doi.org/10.5194/egusphere-2026-1901,https://doi.org/10.5194/egusphere-2026-1901, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
16 Apr 2026
Evaluation of All-sky Solar Irradiance and Near-surface Air Temperature (T2M) Variability Across East African Countries Using NASA POWER Reanalysis Data (2021–2024)
Meseret Amisaya Shibabaw and Mogese Wassaie Mersha
EGUsphere, https://doi.org/10.5194/egusphere-2025-6425,https://doi.org/10.5194/egusphere-2025-6425, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
16 Apr 2026
Ultraviolet observations of the Earth and Moon during the JUICE Lunar-Earth flyby
Philippa Molyneux, Michael Davis, Rohini Giles, Thomas Greathouse, Kurt Retherford, Maarten Versteeg, Sue Ferrell, Tracy Becker, G. Randall Gladstone, Bradley Trantham, Joshua Kammer, Matthew Freeman, and Steven Persyn
EGUsphere, https://doi.org/10.5194/egusphere-2026-2038,https://doi.org/10.5194/egusphere-2026-2038, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
15 Apr 2026
RADEM observations of the Van Allen belts during the JUICE Lunar-Earth Gravity Assist
Marco Pinto, André Rodrigues, Elias Roussos, Daniel Schmid, Martin Volwerk, Stavros Kotsiaros, Patrick Brown, Michele Dougherty, Luísa Arruda, and Olivier Witasse
EGUsphere, https://doi.org/10.5194/egusphere-2026-2055,https://doi.org/10.5194/egusphere-2026-2055, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
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15 Apr 2026
First results from the Juice magnetometer during the Lunar-Earth Gravity Assist
Adrian T. LaMoury, Leonard Schulz, Alexander Betzler, David Hercik, Hans-Ulrich Auster, Patrick Brown, Werner Magnes, Christoph Amtmann, Richard Baughen, Hao Cao, Irmgard Jernej, Roland Lammegger, Adam Masters, Ferdinand Plaschke, Xun Yu, Taylor Pomfret, Alex Strickland, Vaibhav Garg, and Michele K. Dougherty
EGUsphere, https://doi.org/10.5194/egusphere-2026-2054,https://doi.org/10.5194/egusphere-2026-2054, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
15 Apr 2026
In-Situ and Remote Observations of the Ring Current and Radiation Belt during JUICE Lunar Earth Gravity Assist
Pontus C. Brandt, George Clark, Donald G. Mitchell, Peter Kollmann, Matina Gkioulidou, Leonardo Regoli, Kostas Dialynas, Frederic Allegrini, Nicolas Andre, Xianzhe Jia, Krishan Khurana, Carol Paty, Stanislav Barabash, and Peter Wurz
EGUsphere, https://doi.org/10.5194/egusphere-2026-2050,https://doi.org/10.5194/egusphere-2026-2050, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
14 Apr 2026
Calibrating JANUS: an overview of the calibration pipeline and what we learned from the Moon-Earth flyby data
Livio Agostini, Klaus-Dieter Matz, Cecilia Tubiana, Vincenzo Della Corte, Luca Penasa, Thomas Bilotta, Francesco Sarti, Matthew Read, Stubbe Hviid, Stefano Mottola, Alessio Aboudan, Frank Trauthan, Romolo Politi, Michael Aye, Ricardo Hueso, Alice Lucchetti, Elke Kersten, Ines Belgacem, Angela Dietz, Ry Evill, Jim F. Bell III, Angelo Zinzi, Jose María Castro-Marin, Thomas Roatsch, Nicole Schmitz, Manish R. Patel, Luisa M. Lara, Ganna Portyankina, and Pasquale Palumbo
EGUsphere, https://doi.org/10.5194/egusphere-2026-2032,https://doi.org/10.5194/egusphere-2026-2032, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
14 Apr 2026
Planning of the JUICE/JANUS camera observations during the first ever Lunar-Earth Gravity Assist
Cecilia Tubiana, Luca Penasa, Livio Agostini, Alessio Aboudan, Michael Aye, Klaus-Dieter Matz, Matthew Read, Thomas Bilotta, Ricardo Hueso, Alice Lucchetti, Elke Kersten, Romolo Politi, Ganna Portyankina, Benoit Seignovert, Frank Trauthan, Angelo Zinzi, Ry Evill, Angela Dietz, Ines Belgacem, Thomas Cornet, Jose María Castro-Marin, Vincenzo Della Corte, Stubbe Hviid, Thomas Roatsch, Nicole Schmitz, Manish R. Patel, Luisa M. Lara, and Pasquale Palumbo
EGUsphere, https://doi.org/10.5194/egusphere-2026-2008,https://doi.org/10.5194/egusphere-2026-2008, 2026
Preprint under review for ANGEO (discussion: open, 1 comment)
Short summary
10 Apr 2026
Mesoscale Structure of Flickering Aurora from Wide-Field High-Speed Imaging
Sota Nanjo, Satoshi Kurita, Tima Sergienko, Yoshizumi Miyoshi, and Ryuho Kataoka
EGUsphere, https://doi.org/10.5194/egusphere-2026-865,https://doi.org/10.5194/egusphere-2026-865, 2026
Preprint under review for ANGEO (discussion: open, 1 comment)
Short summary
09 Apr 2026
Subauroral contamination in POES/Metop TED channels
Jan Maik Wissing, Olesya Yakovchuk, Stefan Bender, and Christina Arras
Ann. Geophys., 44, 263–285, https://doi.org/10.5194/angeo-44-263-2026,https://doi.org/10.5194/angeo-44-263-2026, 2026
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08 Apr 2026
Benchmarking the Swedish Power Grid Against a 1-in-100-Year Geoelectric Field Scenario
Vanina Lanabere, Andrew P. Dimmock, Sven Molenkamp Venholen, Alice V. L. Wallner, Andreas Johlander, Lisa Rosenqvist, and Johan Setréus
Ann. Geophys., 44, 245–261, https://doi.org/10.5194/angeo-44-245-2026,https://doi.org/10.5194/angeo-44-245-2026, 2026
Short summary
02 Apr 2026
The SuperDARN Meteor Wind Product: A 31-year archive with modeled altitude contributions and validation
Alex Timothy Chartier, Ryan Poffenbarger, Rafael Mesquita, Diego Janches, Jorge Chau, Toralf Renkwitz, Ralph Latteck, and William Bristow
EGUsphere, https://doi.org/10.5194/egusphere-2026-1634,https://doi.org/10.5194/egusphere-2026-1634, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
27 Mar 2026
Mapping transition region flows to the ionosphere in a global hybrid-Vlasov simulation
Venla Koikkalainen, Maxime Grandin, Emilia Kilpua, Abiyot Workayehu, Ivan Zaitsev, Liisa Juusola, Shi Tao, Markku Alho, Lauri Pänkäläinen, Giulia Cozzani, Konstantinos Horaites, Jonas Suni, Yann Pfau-Kempf, Urs Ganse, and Minna Palmroth
Ann. Geophys., 44, 227–243, https://doi.org/10.5194/angeo-44-227-2026,https://doi.org/10.5194/angeo-44-227-2026, 2026
Short summary
27 Mar 2026
Non-Maxwellian electron distributions in the D region during artificial heating (Paper II): Electron cooling rates
Margaretha Myrvang and Björn Johan Gustavsson
EGUsphere, https://doi.org/10.5194/egusphere-2026-1118,https://doi.org/10.5194/egusphere-2026-1118, 2026
Preprint under review for ANGEO (discussion: open, 1 comment)
Short summary
17 Mar 2026
Non-Maxwellian electron distributions in the D region during artificial heating (Paper I): Model development and electron temperature
Margaretha Myrvang and Björn Gustavsson
EGUsphere, https://doi.org/10.5194/egusphere-2026-1117,https://doi.org/10.5194/egusphere-2026-1117, 2026
Preprint under review for ANGEO (discussion: open, 1 comment)
Short summary
16 Mar 2026
The impact of electron precipitation on Earth's thermospheric NO production and the drag of LEO satellites
Manuel Scherf, Sandro Krauss, Grigory Tsurikov, Andreas Strasser, Valery Shematovich, Dmitry Bisikalo, Helmut Lammer, Manuel Güdel, and Christian Möstl
Ann. Geophys., 44, 209–225, https://doi.org/10.5194/angeo-44-209-2026,https://doi.org/10.5194/angeo-44-209-2026, 2026
Short summary
13 Mar 2026
Role of ionospheric and ground contributions in driving GIC: Northern Europe at the peak of the May 2024 superstorm
Liisa Juusola, Ari Viljanen, Ilja Honkonen, Magnar Gullikstad Johnsen, Andrew Dimmock, Vanina Lanabere, and Alice Wallner
EGUsphere, https://doi.org/10.5194/egusphere-2026-1110,https://doi.org/10.5194/egusphere-2026-1110, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
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13 Mar 2026
What is the neutral wind in height-integrated ionospheric electrodynamics?
Spencer Mark Hatch, Johnathan K. Burchill, Heikki Vanhamäki, Rafael Luiz Araujo de Mesquita, and Karl Magnus Laundal
EGUsphere, https://doi.org/10.5194/egusphere-2026-940,https://doi.org/10.5194/egusphere-2026-940, 2026
Preprint under review for ANGEO (discussion: open, 1 comment)
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12 Mar 2026
Characterising magnetopause surface waves within magnetosphere–ionosphere–ground coupling
Martin Archer, David Southwood, Song Zhang, Qiran Sun, and Mike Heyns
EGUsphere, https://doi.org/10.5194/egusphere-2026-1200,https://doi.org/10.5194/egusphere-2026-1200, 2026
Preprint under review for ANGEO (discussion: open, 3 comments)
Short summary
11 Mar 2026
Electric fields in and around an auroral arc and the inferred current system from the BROR sounding rocket experiment
Tomoe Taki, Tima Sergienko, Urban Brändström, Yasunobu Ogawa, Sota Nanjo, and Juan Araújo
EGUsphere, https://doi.org/10.5194/egusphere-2026-1133,https://doi.org/10.5194/egusphere-2026-1133, 2026
Preprint under review for ANGEO (discussion: open, 1 comment)
Short summary
06 Mar 2026
Juice/SWI during the Lunar-Earth-Gravity-Assist. III. Observations of the Earth as Calibration Target
Christopher Jarchow, Ladislav Rezac, Paul Hartogh, Ali Schulz-Ravanbakhsh, Thibault Cavalie, Fabrice Herpin, Raphael Moreno, and Axel Murk
EGUsphere, https://doi.org/10.5194/egusphere-2026-1096,https://doi.org/10.5194/egusphere-2026-1096, 2026
Preprint under review for ANGEO (discussion: final response, 2 comments)
Short summary
05 Mar 2026
Variability and trend analysis of temperature and height in the upper troposphere and stratosphere region over the tropics (Réunion), by combining balloon-sonde and satellite measurements
Gregori de Arruda Moreira, Hassan Bencherif, Tristan Millet, and Damaris Kirsch Pinheiro
Ann. Geophys., 44, 195–207, https://doi.org/10.5194/angeo-44-195-2026,https://doi.org/10.5194/angeo-44-195-2026, 2026
Short summary
05 Mar 2026
The JUICE Lunar-Earth gravity assist from trajectory design, navigation and spacecraft operations perspective
Angela Dietz, Arnaud Boutonnet, and Frank Budnik
EGUsphere, https://doi.org/10.5194/egusphere-2026-1015,https://doi.org/10.5194/egusphere-2026-1015, 2026
Preprint under review for ANGEO (discussion: final response, 2 comments)
Short summary
05 Mar 2026
Juice/SWI during the Lunar-Earth-Gravity-Assist (LEGA). I. General overview
Paul Hartogh, Ladislav Rezac, Thibault Cavalié, Christopher Jarchow, Raphael Moreno, Ali Schulz-Ravanbakhsh, Alberto Carrasco Gallardo, Borys Dabrowski, Samuel Goodyear, Miriam Rengel, Fabrice Herpin, Yasuko Kasai, Mikko Kotiranta, Emmanuel Lellouch, Axel Murk, Michael Olberg, Slawomira Szutowicz, and Eva Wirström
EGUsphere, https://doi.org/10.5194/egusphere-2026-1011,https://doi.org/10.5194/egusphere-2026-1011, 2026
Preprint under review for ANGEO (discussion: final response, 3 comments)
Short summary
03 Mar 2026
ESA/JUICE encounters Earth/Moon in 2024: overview of the Moons And Jupiter Imaging Spectrometer (MAJIS) observations
François Poulet, Giuseppe Piccioni, Yves Langevin, Cydalise Dumesnil, Vincent Carlier, Benoit Seignovert, Marc Dexet, Leigh N. Fletcher, Cédric Leyrat, Francesca Altieri, John Carter, Emiliano D'Aversa, Maria De Sanctis, Davide Grassi, Sandrine Guerlet, Stéphane Le Mouélic, Alessandra Migliorini, Fabrizio Oliva, Clément Royer, Sébastien Rodriguez, Katrin Stephan, Federico Tosi, Francesca Zambon, Alberto Adriani, Gabriele Arnold, Jean-Pierre Bibring, Dominique Bockelée, Rosario Brunetto, Fabrizio Capaccioni, Cristian Carli, Thibault Cavalié, Miriam Cisneros González, Mauro Ciarnello, Simone De Angelis, Pierre Drossart, Gianrico Filacchione, Thierry Fouchet, Jean-Claude Gérard, Denis Grodent, Patrick Irwin, Sophie Jacquinod, Ozgur Karatekin, Emmanuel Lellouch, Nicolas Ligier, Nicolas Mangold, Magali Mebsout, Frédéric Merlin, Alessandro Morbidelli, Alessandro Mura, Andreas Nathues, Maria E. Palumbo, Cédric Pilorget, Olivier Poch, Eric Quirico, Andrea Raponi, Séverine Robert, Elias Roussos, Agustin Sanchez-Lavega, Bernard Schmitt, Giuseppe Sindoni, Marcel Snels, Roberto Sordini, Stefania Stefani, Giovanni Strazzulla, Tim Trent, Gabriel Tobie, Diego Turrini, Ann-Carine Vandaele, Mathieu Vincendon, Olivier Witasse, Claire Vallat, and Alessandro Moraino
Ann. Geophys., 44, 163–193, https://doi.org/10.5194/angeo-44-163-2026,https://doi.org/10.5194/angeo-44-163-2026, 2026
Short summary
26 Feb 2026
| Highlight paper
A source or a sink? How the altitude of particle precipitation influence high-latitude electrodynamics
Magnus F. Ivarsen
Ann. Geophys., 44, 149–162, https://doi.org/10.5194/angeo-44-149-2026,https://doi.org/10.5194/angeo-44-149-2026, 2026
Short summary Editorial statement
25 Feb 2026
Earth's magnetosheath: a comparison of plasma flow direction between models and observations
Marek Vandas and Evgeny Romashets
Ann. Geophys., 44, 137–148, https://doi.org/10.5194/angeo-44-137-2026,https://doi.org/10.5194/angeo-44-137-2026, 2026
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25 Feb 2026
Reevaluation of EISCAT plasma parameters during the May 2024 geomagnetic storm using O+ ratios from AMIE-driven SD-WACCM-X
Florian Günzkofer, Anders Tjulin, Gang Lu, Hanli Liu, and Gunter Stober
EGUsphere, https://doi.org/10.5194/egusphere-2026-823,https://doi.org/10.5194/egusphere-2026-823, 2026
Preprint under review for ANGEO (discussion: open, 2 comments)
Short summary
19 Feb 2026
Spectral analyzes of lunar regions observed by MAJIS during the JUICE Earth-Moon flyby
Francesca Zambon, Francesca Altieri, Maria Cristina De Sanctis, Stéphane Le Mouélic, Giuseppe Piccioni, François Poulet, Yves Langevin, Clément Royer, Federico Tosi, Ozgur Karatekin, Alessandro Mura, and Cristian Carli
EGUsphere, https://doi.org/10.5194/egusphere-2026-876,https://doi.org/10.5194/egusphere-2026-876, 2026
Preprint under review for ANGEO (discussion: final response, 2 comments)
Short summary
19 Feb 2026
Post launch spectral and radiometric performances of MAJIS, the VIS-NIR imaging spectrometer of JUICE
Yves Langevin, Sébastien Rodriguez, Sandrine Guerlet, François Poulet, Giuseppe Piccioni, Livio Agostini, Raymond Armante, Emiliano D’Aversa, Gianrico Filacchione, Leigh Fletcher, Fabrizio Oliva, Clément Royer, Benoit Seignovert, Katrin Stephan, Federico Tosi, and Tim Trent
EGUsphere, https://doi.org/10.5194/egusphere-2026-410,https://doi.org/10.5194/egusphere-2026-410, 2026
Preprint under review for ANGEO (discussion: open, 0 comments)
Short summary
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
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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, 1 comment)
Short summary
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, 1 comment)
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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: final response, 2 comments)
Short summary
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, 2 comments)
Short summary
10 Feb 2026
Data reduction of incoherent scatter plasma line parameters
Mini Gupta and Patrick Guio
Ann. Geophys., 44, 109–122, https://doi.org/10.5194/angeo-44-109-2026,https://doi.org/10.5194/angeo-44-109-2026, 2026
Short summary
06 Feb 2026
Atmospheric gravity waves observed in Brazil on 14 October 2023
Anderson Vestena Bilibio, Igo Paulino, Cristiano Max Wrasse, Prosper Kwamla Nyassor, Ricardo Arlen Buriti, Cosme Alexandre de Oliveira Barros Figueiredo, Fábio Egito, Hisao Takahashi, Toyese Tunde Ayorinde, Lucas Vaz Peres, and Rodrigo da Silva
EGUsphere, https://doi.org/10.5194/egusphere-2025-6571,https://doi.org/10.5194/egusphere-2025-6571, 2026
Preprint under review for ANGEO (discussion: open, 2 comments)
Short summary
04 Feb 2026
In-flight receiver calibration of the Ganymede Laser Altimeter (GALA) by passive Earth observations
Gaku Nishiyama, Alexander Stark, Klaus-Dieter Matz, Christian Hüttig, Kai Wickhusen, Livio Agostini, Christian Althaus, Jan Binger, Keigo Enya, Janot George, Kay Lingenauber, Jun Kimura, Masanori Kobayashi, Giulio Macrì, Wladimir Neumann, Luca Penasa, Ganna Portyankina, Cecilia Tubiana, Konrad Wilner, Pasquale Palumbo, and Hauke Hussmann
EGUsphere, https://doi.org/10.5194/egusphere-2026-520,https://doi.org/10.5194/egusphere-2026-520, 2026
Preprint under review for ANGEO (discussion: final response, 6 comments)
Short summary
04 Feb 2026
Juice-SWI during the Lunar-Earth-Gravity-Assist (LEGA). II. Instrument operations
Thibault Cavalié, Raphael Moreno, Ladislav Rezac, Fabrice Herpin, Christopher Jarchow, Paul Hartogh, Alberto Carrasco Gallardo, Samuel Goodyear, Pierre Mancini, Ali Schulz-Ravanbakhsh, Borys Dabrowski, Yasuko Kasai, Emmanuel Lellouch, Axel Murk, Donal Murtagh, Michael Olberg, Miriam Rengel, Hideo Sagawa, Slawomira Szutowicz, and Eva Wirström
EGUsphere, https://doi.org/10.5194/egusphere-2026-584,https://doi.org/10.5194/egusphere-2026-584, 2026
Revised manuscript accepted for ANGEO (discussion: final response, 4 comments)
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03 Feb 2026
Plasma density estimation from ionograms and geophysical parameters with deep learning
Kian Sartipzadeh, Andreas Kvammen, Björn Gustavsson, Njål Gulbrandsen, Magnar G. Johnsen, Devin Huyghebaert, and Juha Vierinen
Ann. Geophys., 44, 85–107, https://doi.org/10.5194/angeo-44-85-2026,https://doi.org/10.5194/angeo-44-85-2026, 2026
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03 Feb 2026
Observations of fragmented aurora-like emissions and picket fence on the poleward edge of the auroral oval
Sota Nanjo, Katie Herlingshaw, Tima Sergienko, Gaël Cessateur, Noora Partamies, Magnar G. Johnsen, Keisuke Hosokawa, Hervé Lamy, Yasunobu Ogawa, Antti Kero, Shin-ichiro Oyama, and Masatoshi Yamauchi
Ann. Geophys., 44, 63–84, https://doi.org/10.5194/angeo-44-63-2026,https://doi.org/10.5194/angeo-44-63-2026, 2026
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02 Feb 2026
Empirical evidence of spurious correlations among space weather variables
Costecia Ifeoma Onah, Ogbonnaya Okike, Romanus Ejike Ugwoke, Evaristus Uzochukwu Iyida, and Jibrin Adejoh Alhassan
EGUsphere, https://doi.org/10.5194/egusphere-2025-6494,https://doi.org/10.5194/egusphere-2025-6494, 2026
Preprint under review for ANGEO (discussion: final response, 4 comments)
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30 Jan 2026
Solar wind driving of the auroral outflow during the 23–26 September 1998 storm
Kai Zhao, Lynn M. Kistler, Eric J. Lund, Niloufar Nowrouzi, Christopher G. Mouikis, and Naritoshi Kitamura
Ann. Geophys., 44, 47–61, https://doi.org/10.5194/angeo-44-47-2026,https://doi.org/10.5194/angeo-44-47-2026, 2026
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29 Jan 2026
Mean Energy variation of Diffuse Aurora Observed with the ASIS Spectrograph
Gaël Cessateur, Keisuke Hosokawa, Hervé Lamy, Sota Nanjo, Mathieu Barthelemy, Magnar G. Johnsen, and Romain Maggiolo
EGUsphere, https://doi.org/10.5194/egusphere-2026-385,https://doi.org/10.5194/egusphere-2026-385, 2026
Preprint under review for ANGEO (discussion: final response, 2 comments)
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21 Jan 2026
JUICE-MAJIS Earth observations during the 2024 gravity assist: first analysis and comparison with PRISMA data
Fabrizio Oliva, Emiliano D'Aversa, Alessandra Migliorini, Giuseppe Piccioni, François Poulet, Yves Langevin, Gianrico Filacchione, Mauro Ciarniello, Sébastien Rodriguez, Benoît Seignovert, Alessandro Mura, Leigh N. Fletcher, Angelo Zinzi, Marco Giardino, Ettore Lopinto, Giuseppe Sindoni, and Christina Plainaki
EGUsphere, https://doi.org/10.5194/egusphere-2025-6455,https://doi.org/10.5194/egusphere-2025-6455, 2026
Revised manuscript under review for ANGEO (discussion: final response, 4 comments)
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14 Jan 2026
Statistical and temporal characteristics of sawtooth events
Connor C. DiMarco, Tuija I. Pulkkinen, and Michael G. Henderson
Ann. Geophys., 44, 35–46, https://doi.org/10.5194/angeo-44-35-2026,https://doi.org/10.5194/angeo-44-35-2026, 2026
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13 Jan 2026
Ionospheric responses to the 14 October 2023 annular solar eclipse over Brazil: A case study of fixed-frequency isoline variations
Igo Paulino, Paulo Roberto Fagundes, Ana Roberta Paulino, Maurício José Alves Bolzam, and Valdir Gil Pillat
EGUsphere, https://doi.org/10.5194/egusphere-2025-6570,https://doi.org/10.5194/egusphere-2025-6570, 2026
Preprint under review for ANGEO (discussion: final response, 3 comments)
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13 Jan 2026
Transport coefficients in standard Kappa distributed plasmas
Mahmood J. Jwailes, Imad A. Barghouthi, and Qusay S. Atawnah
EGUsphere, https://doi.org/10.5194/egusphere-2025-6474,https://doi.org/10.5194/egusphere-2025-6474, 2026
Revised manuscript under review for ANGEO (discussion: final response, 4 comments)
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12 Jan 2026
Time-dependent modeling of Alfvénic precipitation observed in the ionosphere
Etienne Gavazzi, Andres Spicher, Björn Gustavsson, James Clemmons, Robert Pfaff, and Douglas Rowland
Ann. Geophys., 44, 1–15, https://doi.org/10.5194/angeo-44-1-2026,https://doi.org/10.5194/angeo-44-1-2026, 2026
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12 Jan 2026
Spectroscopic detection of terrestrial lightning from space by JUICE-MAJIS during Earth Gravity Assist
Emiliano D'Aversa, Fabrizio Oliva, Giuseppe Piccioni, François Poulet, Ivana Kolmašová, Alessandra Migliorini, Gianrico Filacchione, Leigh Fletcher, Alessandro Mura, Yves Langevin, Benoît Seignovert, Davide Grassi, Sébastien Rodriguez, Federico Tosi, Nicolas Ligier, Giuseppe Sindoni, Marco Giardino, and Christina Plainaki
EGUsphere, https://doi.org/10.5194/egusphere-2025-6453,https://doi.org/10.5194/egusphere-2025-6453, 2026
Revised manuscript under review for ANGEO (discussion: final response, 5 comments)
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12 Jan 2026
A comparison of modeled daytime E regions from E-PROBED and PyIRI with ionosonde observations
Daniel J. Emmons, Cornelius Csar Jude H. Salinas, Dong L. Wu, Nimalan Swarnalingam, Eugene V. Dao, Jorge L. Chau, Yosuke Yamazaki, Kyle E. Fitch, and Victoriya V. Forsythe
Ann. Geophys., 44, 17–34, https://doi.org/10.5194/angeo-44-17-2026,https://doi.org/10.5194/angeo-44-17-2026, 2026
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12 Jan 2026
A near-sunset atmospheric sounding during the 14 October 2023 annular solar eclipse over Natal
Igo Paulino, Francisco Raimundo da Silva, Ana Roberta Paulino, and Gilvan Borba
EGUsphere, https://doi.org/10.5194/egusphere-2025-6194,https://doi.org/10.5194/egusphere-2025-6194, 2026
Preprint under review for ANGEO (discussion: final response, 2 comments)
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12 Jan 2026
How well can we forecast local magnetic ground perturbations with existing space weather monitoring resources?
Stephen Omondi, Spencer Mark Hatch, Andreas Kvammen, Magnar Gullikstad Johnsen, Mathew J. Owens, Kristian Solheim Thinn, and Rodrigo López
EGUsphere, https://doi.org/10.5194/egusphere-2025-6298,https://doi.org/10.5194/egusphere-2025-6298, 2026
Preprint under review for ANGEO (discussion: final response, 4 comments)
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27 Dec 2025
Spatial characteristics of the dayside auroral ionosphere observed by Incoherent Scatter Radar
Ingeborg Frøystein, Andres Spicher, and Kjellmar Oksavik
EGUsphere, https://doi.org/10.5194/egusphere-2025-6188,https://doi.org/10.5194/egusphere-2025-6188, 2025
Revised manuscript under review for ANGEO (discussion: final response, 4 comments)
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17 Dec 2025
Deducing spatial characteristics of global thunderstorm activity using the observed Schumann resonance frequencies
Oleksandr Koloskov, Masashi Hayakawa, and Alexander P. Nickolaenko
EGUsphere, https://doi.org/10.5194/egusphere-2025-5961,https://doi.org/10.5194/egusphere-2025-5961, 2025
Preprint under review for ANGEO (discussion: final response, 2 comments)
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17 Dec 2025
Globally- and hemispherically-integrated Joule heating rates during the 17 March 2015 geomagnetic storm, according to physics-based and empirical models
Stelios Tourgaidis, Dimitris Baloukidis, Panagiotis Pirnaris, Theodoros Sarris, Aaron Ridley, and Gang Lu
Ann. Geophys., 43, 881–899, https://doi.org/10.5194/angeo-43-881-2025,https://doi.org/10.5194/angeo-43-881-2025, 2025
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16 Dec 2025
Dune aurora: Statistical survey from a citizen science database
Maxime Grandin, Liisa Juusola, Noora Partamies, Emma Bruus, Joona Rautiainen, Donna Lach, Jia Jia, Max van de Kamp, Eero Karvinen, Kirsti Kauristie, and Theresa Hoppe
EGUsphere, https://doi.org/10.5194/egusphere-2025-5374,https://doi.org/10.5194/egusphere-2025-5374, 2025
Preprint under review for ANGEO (discussion: final response, 4 comments)
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16 Dec 2025
GHOST aurora – continuum emission produced by hot N2
Rowan Dayton-Oxland, Fiona Ball, Daniel Whiter, Srimoyee Samaddar, Noora Partamies, Mathieu Barthelemy, Katie Herlingshaw, and Eero Karvinen
EGUsphere, https://doi.org/10.5194/egusphere-2025-5317,https://doi.org/10.5194/egusphere-2025-5317, 2025
Preprint under review for ANGEO (discussion: final response, 2 comments)
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15 Dec 2025
Parameterization of the subsolar standoff distance of Earth's magnetopause based on results from machine learning
Lars Klingenstein, Niklas Grimmich, Yuri Y. Shprits, Adrian Pöppelwerth, and Ferdinand Plaschke
Ann. Geophys., 43, 835–854, https://doi.org/10.5194/angeo-43-835-2025,https://doi.org/10.5194/angeo-43-835-2025, 2025
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15 Dec 2025
The JUICE 2024 close flyby of the Moon: Thermal assessment from MAJIS
Federico Tosi, Clément Royer, Federico Colaiuta, François Poulet, Tyler M. Powell, Benjamin T. Greenhagen, Yves Langevin, Alessandro Mura, Giuseppe Piccioni, Cédric Pilorget, Cristian Carli, and Francesca Zambon
EGUsphere, https://doi.org/10.5194/egusphere-2025-6150,https://doi.org/10.5194/egusphere-2025-6150, 2025
Revised manuscript under review for ANGEO (discussion: final response, 4 comments)
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11 Dec 2025
Studies of noctilucent clouds from the stratosphere during the 2024 TRANSAT balloon flight
Peter Dalin, Hidehiko Suzuki, Nikolay Pertsev, Vladimir Perminov, Linda Megner, Johan Kero, Peter Voelger, Jonas Hedin, Gerd Baumgarten, Anne Réchou, and Denis Efremov
EGUsphere, https://doi.org/10.5194/egusphere-2025-5757,https://doi.org/10.5194/egusphere-2025-5757, 2025
Revised manuscript accepted for ANGEO (discussion: final response, 4 comments)
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10 Dec 2025
| Highlight paper
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 summary Editorial statement
09 Dec 2025
Transport coefficients in modified Kappa distributed plasmas
Mahmood J. Jwailes, Imad A. Barghouthi, and Qusay S. Atawnah
Ann. Geophys., 43, 783–802, https://doi.org/10.5194/angeo-43-783-2025,https://doi.org/10.5194/angeo-43-783-2025, 2025
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04 Dec 2025
An empirical model of high-latitude ionospheric conductances based on EISCAT observations
Liisa Juusola, Ilkka Virtanen, Spencer Mark Hatch, Heikki Vanhamäki, Maxime Grandin, Noora Partamies, Urs Ganse, Ilja Honkonen, Abiyot Workayehu, Antti Kero, and Minna Palmroth
Ann. Geophys., 43, 755–781, https://doi.org/10.5194/angeo-43-755-2025,https://doi.org/10.5194/angeo-43-755-2025, 2025
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03 Dec 2025
Observations of electric fields during two partial solar eclipses at the geomagnetic equator
Manuel A. Bravo, Joel H. Fernández, Adán Godoy, Jackson E. Pérez, Benjamín A. Urra, Antonela Ore, Enrique A. Carrasco, Juan J. Soria, Enrique D. Rojo, Carlos E. Saavedra, Elías M. Ovalle, Sulamita M. Ramos, Helen C. Meza, Giancarlo E. Mayhuire, Pedro Quispe, Eduardo Vigo, and Orlando Poma
Ann. Geophys., 43, 739–753, https://doi.org/10.5194/angeo-43-739-2025,https://doi.org/10.5194/angeo-43-739-2025, 2025
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03 Dec 2025
High temporal resolution photos of SAR arc rays lead to a new interpretation of the physical causes: Wave-particle interactions and energetic electron precipitation
Bruce T. Tsurutani, Gurbax S. Lakhina, Rajkumar Hajra, Richard B. Horne, Masatomi Iizawa, Yasuhito Narita, Ingo von Borstel, Karl-Heinz Glassmeier, Volker Bothmer, Klaus Reinsch, Philipp Schulz, and Sami Solanki
EGUsphere, https://doi.org/10.5194/egusphere-2025-5536,https://doi.org/10.5194/egusphere-2025-5536, 2025
Revised manuscript under review for ANGEO (discussion: final response, 8 comments)
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25 Nov 2025
Ionospheric signatures of a Bursty Bulk Flow in the 6D Vlasiator simulation
Abiyot Workayehu, Minna Palmroth, Maxime Grandin, Liisa Juusola, Markku Alho, Ivan Zaitsev, Venla Koikkalainen, Konstantinos Horaites, Yann Pfau-Kempf, Urs Ganse, Markus Battarbee, and Jonas Suni
Ann. Geophys., 43, 723–737, https://doi.org/10.5194/angeo-43-723-2025,https://doi.org/10.5194/angeo-43-723-2025, 2025
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25 Nov 2025
High-latitude MSTIDs over the EISCAT-3D site: Solar activity and seasonal dependency
Rahul Rathi, Adrian Grocott, Tim Yeoman, and Mark Lester
EGUsphere, https://doi.org/10.5194/egusphere-2025-5769,https://doi.org/10.5194/egusphere-2025-5769, 2025
Revised manuscript accepted for ANGEO (discussion: final response, 4 comments)
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21 Nov 2025
Magnetospheric convection in a hybrid-Vlasov simulation
Shi Tao, Markku Alho, Ivan Zaitsev, Lucile Turc, Markus Battarbee, Urs Ganse, Yann Pfau-Kempf, and Minna Palmroth
Ann. Geophys., 43, 709–721, https://doi.org/10.5194/angeo-43-709-2025,https://doi.org/10.5194/angeo-43-709-2025, 2025
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14 Nov 2025
High latitude, dayside ULF signals observed from ground in Greenland
Marie Vigger Eldor, Magnar Gullikstad Johnsen, Nils Olsen, and Anna Naemi Willer
EGUsphere, https://doi.org/10.5194/egusphere-2025-5396,https://doi.org/10.5194/egusphere-2025-5396, 2025
Preprint under review for ANGEO (discussion: final response, 4 comments)
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13 Nov 2025
Incoherent Scatter Radar Observations of the F Region of the Ionosphere above the Eastern US during the April 2024 Solar Eclipse
Sevag Derghazarian, Larisa Goncharenko, Mateo Cardona Serrano, Shun-Rong Zhang, Philip J. Erickson, Anthea J. Coster, Dupinder Singh, and William Rideout
EGUsphere, https://doi.org/10.5194/egusphere-2025-5389,https://doi.org/10.5194/egusphere-2025-5389, 2025
Preprint under review for ANGEO (discussion: final response, 5 comments)
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13 Nov 2025
Tracking Ionospheric Changes during Solar Eclipses: Concepción Historical Data
Adán Y. Godoy, Manuel A. Bravo, Benjamín A. Urra, Carlos A. Castillo-Rivera, Marayén R. Canales, and Alberto J. Foppiano
EGUsphere, https://doi.org/10.5194/egusphere-2025-5416,https://doi.org/10.5194/egusphere-2025-5416, 2025
Preprint under review for ANGEO (discussion: final response, 4 comments)
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