Spatial and Temporal Evolution of Different‐Scale Ionospheric Irregularities in Central and East Siberia During the 27–28 May 2017 Geomagnetic Storm by V. B. Ovodenko, M. V. Klimenko, I. E. Zakharenkova, A. V. Oinats, D. S. Kotova, A. V. Nikolaev, I. V. Tyutin, D. D. Rogov, K. G. Ratovsky, D. V. Chugunin, P. A. Budnikov, J. C. Coxon, B. J. Anderson, A. A. Chernyshov

“…Ionosondes, HF, and UHF radar data exhibited a presence of intense multi‐scale ionospheric irregularities. We revealed a correlation between different‐scale Auroral/Farley‐Buneman ionospheric irregularities of the E layer during the geomagnetic storm. …”
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PyIRTAM: A New Module of PyIRI for IRTAM Coefficients by Victoriya V. Forsythe, Ivan Galkin, Sarah E. McDonald, Kenneth F. Dymond, Bruce A. Fritz, Angeline G. Burrell, Katherine A. Zawdie, Douglas P. Drob

Subjects: “…ionosphere…”
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High‐Latitude Electrodynamics Specified in SAMI3 Using AMPERE Field‐Aligned Currents by A. T. Chartier, J. D. Huba, D. P. Sitaram, V. G. Merkin, B. J. Anderson, S. K. Vines

Subjects: “…ionosphere…”
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A Large Simulation Set of Geomagnetic Storms—Can Simulations Predict Ground Magnetometer Station Observations of Magnetic Field Perturbations? by Q. Al Shidi, T. Pulkkinen, G. Toth, A. Brenner, S. Zou, J. Gjerloev

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COMPASS: A New COnductance Model Based on PFISR And SWARM Satellite Observations by Zihan Wang, Shasha Zou

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Development of a Regional F‐Region Critical Frequency Model for Southern Africa by S. Brijraj, P. J. Cilliers, M. Kosch

Subjects: “…ionosphere…”
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Comparative Analysis of Higher‐Order Ionospheric Delay on PPP Long‐Term Coordinate Time Series and Residual Modeling Using Horizontal Gradients and RINEX Data by Kaichun Yang, Weiping Jiang, Zhao Li, Xin Ding, Ran Lu

Subjects: “…higher‐order ionospheric delay…”
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Statistical Features of Polar Cap North and South Indices in Response to Interplanetary and Terrestrial Conditions: A Revisit by Jong‐Sun Park, Quan Qi Shi, Oleg A. Troshichev, Khan‐Hyuk Kim, Jih‐Hong Shue, Timo Pitkänen, Hui Zhang

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Variations of TEC Over Iberian Peninsula in 2015 Due to Geomagnetic Storms and Solar Flares by A. L. Morozova, T. V. Barlyaeva, T. Barata

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Significant Midlatitude Bubble‐Like Ionospheric Super‐Depletion Structure (BLISS) and Dynamic Variation of Storm‐Enhanced Density Plume During the 23 April 2023 Geomagnetic Storm by Ercha Aa, Shun‐Rong Zhang, Shasha Zou, Wenbin Wang, Zihan Wang, Xuguang Cai, Philip J. Erickson, Anthea J. Coster

Subjects: “…ionospheric storm…”
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Distributions of Ion Density Irregularities and Their Gradients Inside Low‐Latitude Ionospheric Plasma Bubbles Based on C/NOFS Planar Langmuir Probe Data by Emanoel Costa, Patrick A. Roddy, John O. Ballenthin

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Markov Chain‐Based Stochastic Modeling of Deep Signal Fading: Availability Assessment of Dual‐Frequency GNSS‐Based Aviation Under Ionospheric Scintillation by Andrew K. Sun, Hyeyeon Chang, Sam Pullen, Hyosub Kil, Jiwon Seo, Y. Jade Morton, Jiyun Lee

“…Abstract Deep signal fading due to ionospheric scintillation severely impacts global navigation satellite system (GNSS)‐based applications. …”
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Global Maps of Equatorial Plasma Bubbles Depletions Based on FORMOSAT‐7/COSMIC‐2 Ion Velocity Meter Plasma Density Observations by Irina Zakharenkova, Iurii Cherniak, John J. Braun, Qian Wu

Subjects: “…ionospheric irregularities…”
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Improving Forecasting Ability of GITM Using Data‐Driven Model Refinement by Brandon M. Ponder, Aaron J. Ridley, Ankit Goel, D. S. Bernstein

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What to Do When the F10.7 Goes Out? by Sean Elvidge, David R. Themens, Matthew K. Brown, Elizabeth Donegan‐Lawley

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Forward‐Looking Study of Solar Maximum Impact in 2025: Effects of Satellite Navigation Failure on Aviation Network Operation in the Greater Bay Area, China by Dabin Xue, Jian Yang, Zhizhao Liu, Wei Cong

Subjects: “…ionosphere…”
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The Role of Spatial Gradient on Vertical Total Electron Content Extraction From Geodetic Very Long Baseline Interferometry Observation: Case Study CONT08 to CONT17‐L1 by Hossein Etemadfard, Robert Heinkelmann, Masoud Mashhadi Hossainali, Harald Schuh

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Science highlights from the Kjell Henriksen Observatory on Svalbard by Katie Herlingshaw, Noora Partamies, Charlotte M. van Hazendonk, Mikko Syrjäsuo, Lisa J. Baddeley, Magnar G. Johnsen, Nina K. Eriksen, Ian McWhirter, Anasuya Aruliah, Mark J. Engebretson, Kjellmar Oksavik, Fred Sigernes, Dag A. Lorentzen, Takanori Nishiyama, Matthew B. Cooper, John Meriwether, Stein Haaland, Daniel Whiter

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Observations and Modeling Studies of Solar Eclipse Effects on Oblique High Frequency Radio Propagation by M. L. Moses, L. J. Kordella, G. D. Earle, D. Drob, J. D. Huba, J. M. Ruohoniemi, S. G. Shepherd, V. Sivakumar

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The Effect of Midnight Temperature Maximum Winds on Post‐Midnight Equatorial Spread F by J. Krall, D. Hickey, J. D. Huba, P. B. Dandenault

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