Radiation Belt Daily Average Electron Flux Model (RB‐Daily‐E) From the Seven‐Year Van Allen Probes Mission and Its Application to Interpret GPS On‐Orbit Solar Array Degradation... by Christine Gabrielse, Justin H. Lee, Seth Claudepierre, Don Walker, Paul O’Brien, James Roeder, Yao Lao, Jann Grovogui, Drew L. Turner, Andrei Runov, Alexander Boyd, Joseph Fennell, J. Bernard Blake, Kevin Lopez, Yoshizumi Miyoshi, Kunihiro Keika, Nana Higashio, Iku Shinohara, Shun Imajo, Satoshi Kurita, Takefumi Mitani

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Comparative Accuracies of Models for Drag Prediction During Geomagnetically Disturbed Periods: A First Principles Model Versus Empirical Models by R. L. Walterscheid, M. W. Chen, C.‐C. Chao, S. Gegenheimer, J. Cabrera‐Guzman, J. McVey

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Airborne Mapping of Atmospheric Ammonia in a Mixed Discrete and Diffuse Emission Environment by David M. Tratt, Clement S. Chang, Eric R. Keim, Kerry N. Buckland, Morad Alvarez, Olga Kalashnikova, Sina Hasheminassab, Michael J. Garay, Yaning Miao, William C. Porter, Francesca M. Hopkins, Payam Pakbin, Mohammad Sowlat

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Removing Orbital Variations From Low Altitude Particle Data: Method and Application by J. C. Green, T. P. O’Brien, S. G. Claudepierre, A. J. Boyd

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Long‐Term Observations of Galactic Cosmic Ray LET Spectra in Lunar Orbit by LRO/CRaTER by M. D. Looper, J. E. Mazur, J. B. Blake, H. E. Spence, N. A. Schwadron, J. K. Wilson, A. P. Jordan, C. Zeitlin, A. W. Case, J. C. Kasper, L. W. Townsend, T. J. Stubbs

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Specifying High Altitude Electrons Using Low‐Altitude LEO Systems: Updates to the SHELLS Model by A. J. Boyd, J. C. Green, T. P. O’Brien, S. G. Claudepierre

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Specifying High‐Altitude Electrons Using Low‐Altitude LEO Systems: The SHELLS Model by S. G. Claudepierre, T. P. O'Brien

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Confirmation of the Luminous Blue Variable Status of MWC 930 by A. S. Miroshnichenko, N. Manset, S. V. Zharikov, J. Zsargó, J. A. Juárez Jiménez, J. H. Groh, H. Levato, M. Grosso, R. J. Rudy, E. A. Laag, K. B. Crawford, R. C. Puetter, D. E. Reichart, K. M. Ivarsen, J. B. Haislip, M. C. Nysewander, A. P. LaCluyze

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Mesh-based interpolation on 2-manifolds by Kevin Scully

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Modeling the Dynamic Variability of Sub‐Relativistic Outer Radiation Belt Electron Fluxes Using Machine Learning by Donglai Ma, Xiangning Chu, Jacob Bortnik, Seth G. Claudepierre, W. Kent Tobiska, Alfredo Cruz, S. Dave Bouwer, Joseph F. Fennell, J. Bernard Blake

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The effects of plasma source on adiabatic electron acceleration at dipolarization fronts by S. N. F. Chepuri, A. N. Jaynes, J. Joseph, D. L. Turner, C. Gabrielse, I. J. Cohen, D. N. Baker, B. H. Mauk, T. Leonard, J. F. Fennell

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Thank You to Our 2020 Reviewers by Noé Lugaz, Delores J. Knipp, Jennifer L. Gannon, Michael Hapgood, Huixin Liu, T. Paul O'Brien, Steven K. Morley

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Thank You to Our 2021 Peer Reviewers by Noé Lugaz, Brett A. Carter, Jennifer L. Gannon, Michael Hapgood, Huixin Liu, T. Paul O’Brien, Steven K. Morley, Shasha Zou

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New Index to Characterize Ionospheric Irregularity Distribution by Endawoke Yizengaw

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Actuator Fault Diagnosis in a Boeing 747 Model via Adaptive Modified Two-Stage Kalman Filter by Fikret Caliskan, Youmin Zhang, N. Eva Wu, Jong-Yeob Shin

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Developing the LDi and LCi Geomagnetic Indices, an Example of Application of the AULs Framework by C. Cid, A. Guerrero, E. Saiz, A. J. Halford, A. C. Kellerman

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Forcing From Lower Thermosphere and Quiet Time Scintillation Longitudinal Dependence by Endawoke Yizengaw, Keith Groves

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Thank You to Our 2019 Reviewers by Noé Lugaz, Delores J. Knipp, Jennifer L. Gannon, Michael Hapgood, Huixin Liu, T. Paul O'Brien, Daniel T. Welling

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Modeling the Lunar Radiation Environment: A Comparison Among FLUKA, Geant4, HETC‐HEDS, MCNP6, and PHITS by F. A. Zaman, L. W. Townsend, W. C. deWet, M. D. Looper, J. M. Brittingham, N. T. Burahmah, H. E. Spence, N. A. Schwadron, S. S. Smith

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Harmonization of RBSP and Arase Energetic Electron Measurements Utilizing ESA Radiation Monitor Data by Ingmar Sandberg, Piers Jiggens, Hugh Evans, Constantinos Papadimitriou, Sigiava Aminalragia‐Giamini, Christos Katsavrias, Alexander J. Boyd, Thomas Paul O’Brien, Nana Higashio, Takefumi Mitani, Iku Shinohara, Yoshizumi Miyoshi, Daniel Ν. Baker, Ioannis A. Daglis

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