Explanipedia

Magnetospheric Sources of Theta Aurora: A Case Study Comparing Observations With SWMF Global Simulation Open

S. C. Hill, T. I. Pulkkinen, Austin Brenner, Qusai Al Shidi, Agnit Mukhopadhyay , et al. · 2024

We present the first high resolution global MHD with coupled inner magnetosphere simulation results of an observed theta aurora event. We use the Space Weather Modeling Framework in the Geospace configuration, which produces accurate field…

Using ICON Satellite Data to Forecast Equatorial Ionospheric Instability Throughout 2022 Open

D. L. Hysell, A. Kirchman, Brian J. Harding, R. A. Heelis, S. England , et al. · 2024

Numerical forecasts of plasma convective instability in the postsunset equatorial ionosphere are made based on data from the Ionospheric Connections Explorer satellite (ICON) following the method outlined in a previous study. Data are sele…

Imaging the End-to-End Dynamics of the Global Solar Wind-Magnetosphere Interaction Open

D. G. Sibeck, K. R. Murphy, F. S. Porter, Brian M. Walsh, Hyunju Connor , et al. · 2023

Whitepaper #369 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research. Additional topics: planetary magnetospheres; ground-based missions/projects; space-based missions/projects; system sci…

Observatory for Heteroscale Magnetosphere-Ionosphere Coupling (OHMIC) Open

J. L. Burch, H. U. Frey, S. B. Mende, W. Lotko, R. E. Ergun · 2023

The Observatory for Heteroscale Magnetosphere-Ionosphere Coupling (OHMIC) is an innovative moderate-scale four-spacecraft (S/C) mission that combines high-time-resolution plasma and fields measurements in the auroral acceleration region (A…

The Ionospheric Connection Explorer - Prime Mission Review Open

T. J. Immel, S. England, Brian J. Harding, Yen‐Jung Wu, Astrid Maute , et al. · 2023

The two-year prime mission of the NASA Ionospheric Connection Explorer (ICON) is complete. The baseline operational and scientific objectives have been met and exceeded, as detailed in this report. In October of 2019, ICON was launched int…

Update of ICON-FUV hmF2 and NmF2 Comparison with External Radio Observations Open

Gilles Wautelet, B. Hubert, Jean‐Claude Gérard, T. J. Immel, H. U. Frey , et al. · 2023

In Flight Performance of the Far Ultraviolet Instrument (FUV) on ICON Open

H. U. Frey, S. B. Mende, R. R. Meier, Ulas Kamacı, Juan Miguel Urco , et al. · 2023

Reducing the Ionospheric Contamination Effects on the Column O/N<sub>2</sub> Ratio and Its Application to the Identification of Non‐Migrating Tides Open

Christopher Scott Krier, S. England, R. R. Meier, H. U. Frey · 2023

Prior investigations have attempted to characterize the longitudinal variability of the column number density ratio of atomic oxygen to molecular nitrogen ( O/N 2 ) in the context of non‐migrating tides. The retrieval of thermospheric O/N …

The Magnetospheric Source of Theta Aurora Include Dayside and Nightside Multiple Reconnection Sites: SWMF Geospace Simulation Results Open

Shannon Hill, T. I. Pulkkinen, Austin Brenner, Qusai Al Shidi, Agnit Mukhopadhyay , et al. · 2023

We present simulation results of a transpolar auroral arc event that show the arc formation occurs on both open and closed field lines and is sourced from both dayside and nightside magnetospheric reconnection. The dayside and nightside pr…

Quantifying the global solar wind-magnetosphere interaction with the Solar-Terrestrial Observer for the Response of the Magnetosphere (STORM) mission concept Open

D. G. Sibeck, K. R. Murphy, F. S. Porter, Hyunju Connor, Brian M. Walsh , et al. · 2023

Much of what we know about the solar wind’s interaction with the Earth’s magnetosphere has been gained from isolated in-situ measurements by single or multiple spacecraft. Based on their observations, we know that reconnection, whether on …

Multipoint Observations of Dispersive Scale Alfvénic Field‐Line Resonances Associated With Substorm Auroral Beads Open

A. J. Hull, C. C. Chaston, P. A. Damiano, H. U. Frey, S. Wing · 2023

We present a case study of the field‐aligned current (FAC) systems that transpire within the high‐altitude auroral acceleration region of an “auroral bead” initiated double oval substorm observed on 23 February 2001 by the Cluster fleet. C…

Summary for Policymakers Open

Ernest Aigner, Christoph Görg, Verena Madner, Andreas Muhar, Alfred Posch , et al. · 2023

Zusammenfassung The Summary for Policy Makers presents the main results in condensed form. The summary is the result of an internal coordination process and is therefore supported by all coordinating lead authors. For each statement, the r…

Technische Zusammenfassung Open

Ernest Aigner, Christoph Görg, Astrid Krisch, Verena Madner, Andreas Muhar , et al. · 2023

Zusammenfassung Die technische Zusammenfassung richtet sich an das Fachpublikum und fasst die wichtigsten Ergebnisse des Berichtes zusammen, ohne aber alle Details auszuführen. Jedes Kapitel wird auf ungefähr zwei Seiten zusammengefasst. H…

Zusammenfassung für Entscheidungstragende Open

Ernest Aigner, Christoph Görg, Verena Madner, Andreas Muhar, Andreas Novy , et al. · 2023

Zusammenfassung Die Zusammenfassung für Entscheidungstragende gibt die wesentlichen Ergebnisse in verdichteter Form wieder. Die Zusammenfassung ist das Ergebnis eines internen Abstimmungsprozess und wird daher von allen koordinierenden Lei…

Technical Summary Open

Ernest Aigner, Christoph Görg, Astrid Krisch, Verena Madner, Andreas Muhar , et al. · 2023

Zusammenfassung The technical summary is aimed at a professional audience and summarizes the most important findings of the report, but without going into all the details. Each chapter is summarized on approximately two pages. For the rele…

Reducing the ionospheric contamination effects on the column O/N2 ratio and its application to the identification of non-migrating tides Open

Christopher Scott Krier, S. England, R. R. Meier, H. U. Frey · 2022

Prior investigations have attempted to characterize the longitudinal variability of the column number density ratio of atomic oxygen to molecular nitrogen (ΣO/N2) in the context of non-migrating tides. The retrieval of thermospheric ΣO/N2 …

Time Delay Integration Imaging of the Nighttime Ionosphere from the ICON Observatory Open

S. B. Mende, H. U. Frey, S. England, T. J. Immel, R. Eastes · 2022

One of the objectives of the Far UltraViolet (FUV) imager on the Ionospheric Connection Explorer (ICON) spacecraft is to make high resolution images of the nighttime near equatorial oxygen 135.6 nm airglow emission. This emission is largel…

Climatology of Equatorial Plasma Bubbles in Ionospheric Connection Explorer/Far-UltraViolet (ICON/FUV) Limb Images Open

Jaeheung Park, S. B. Mende, R. Eastes, H. U. Frey · 2022

The Far-UltraViolet (FUV) imager onboard the Ionospheric Connection Explorer (ICON) spacecraft provides two-dimensional limb images of oxygen airglow in the nightside low-latitude ionosphere that are used to determine the oxygen ion densit…

Neutral Composition Information in ICON EUV Dayglow Observations Open

Richard M. Tuminello, S. England, Martin M. Sirk, R. R. Meier, A. W. Stephan , et al. · 2022

Since the earliest space‐based observations of Earth's atmosphere, ultraviolet (UV) airglow has proven a useful resource for remote sensing of the ionosphere and thermosphere. The NASA Ionospheric Connection Explorer (ICON) spacecraft, who…

Neutral Composition Information in ICON EUV Dayglow Observations Open

Richard M. Tuminello, S. England, Martin M. Sirk, R. R. Meier, A. W. Stephan , et al. · 2022

Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Space Physics. ESSOAr is a venue for early communication or feedback before peer review. Data may be p…

New Insights Into the Substorm Initiation Sequence From the Spatio‐Temporal Development of Auroral Electrojets Open

S. Ohtani, T. Motoba, J. W. Gjerloev, H. U. Frey, I. R. Mann , et al. · 2022

In the present study we examine three substorm events, Events 1–3, focusing on the spatio‐temporal development of auroral electrojets (AEJs) before auroral breakup. In Events 1 and 2, auroral breakup was preceded by the equatorward motion …

Neutral Composition Information in ICON EUV Dayglow Observations Open

Richard M. Tuminello, S. England, Martin M. Sirk, R. R. Meier, A. W. Stephan , et al. · 2022

Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Space Physics. ESSOAr is a venue for early communication or feedback before peer review. Data may be p…

Neutral Composition Information in ICON EUV Dayglow Observations Open

Richard M. Tuminello, S. England, Martin M. Sirk, R. R. Meier, A. W. Stephan , et al. · 2022

Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Space Physics. ESSOAr is a venue for early communication or feedback before peer review. Data may be p…

Kapitel II: Summary for Policymakers Open

Ernest Aigner, Christoph Görg, Verena Madner, Andreas Muhar, Andreas Novy , et al. · 2022

Kapitel IV: Technical Summary Open

Ernest Aigner, Christoph Görg, Astrid Krisch, Verena Madner, Andreas Muhar , et al. · 2022

Experimental Validation of N2 Emission Ratios in Altitude Profiles of Observed Sprites Open

C. L. Kuo, Earle Williams, Toru Adachi, K. M. A. Ihaddadene, Sébastien Célestin , et al. · 2021

Recent efforts to compare the sprite ratios with theoretical results have not been successfully resolved due to a lack of theoretical results for sprite streamers in varying altitudes. Advances in the predicted emission ratios of sprite st…

First ICON‐FUV Nighttime NmF2 and hmF2 Comparison to Ground and Space‐Based Measurements Open

Gilles Wautelet, B. Hubert, Jean‐Claude Gérard, T. J. Immel, H. U. Frey , et al. · 2021

The Far Ultra Violet (FUV) ultraviolet imager onboard the NASA‐ICON mission is dedicated to the observation and study of the ionosphere dynamics at mid and low latitudes. We compare density profiles provided by the ICON FUV instrument duri…

The Onset of a Substorm and the Mating Instability Open

G. Haerendel, H. U. Frey · 2021

The paper underlines the view that the appearance of beading and its nonlinear growth in the onset arc occurs independently from the onset of reconnection in the tail at about 20 R E . Both events follow from an extreme thinning of the cen…

First Results From the Retrieved Column O/N<sub>2</sub> Ratio From the Ionospheric Connection Explorer (ICON): Evidence of the Impacts of Nonmigrating Tides Open

S. England, R. R. Meier, H. U. Frey, S. B. Mende, A. W. Stephan , et al. · 2021

In near‐Earth space, variations in thermospheric composition have important implications for thermosphere‐ionosphere coupling. The ratio of O to N 2 is often measured using far‐UV airglow observations. Taking such airglow observations from…

First results from the retrieved column O/N2 ratio from the Ionospheric Connection Explorer (ICON): Longitudinal structures induced by nonmigrating tides Open

S. England, R. R. Meier, H. U. Frey, S. B. Mende, A. W. Stephan , et al. · 2021

Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Space Physics. ESSOAr is a venue for early communication or feedback before peer review. Data may be p…

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