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Spicher, Andres; Kvammen, Andreas; LaBelle, James; Zettergren, Matthew D.; Bonnell, John W. & Roglans, Roger
[Vis alle 20 forfattere av denne artikkelen]
(2023).
Examining the relevance of different instability mechanisms in causing ionospheric cusp irregularities based on sounding rocket data and numerical simulations.
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Kotova, Daria; Jin, Yaqi; Spogli, Luca; Wood, Alan G.; Urbar, Jaroslav & Rawlings, James T.
[Vis alle 11 forfattere av denne artikkelen]
(2022).
Electron density fluctuations from Swarm as a proxy for ground-based scintillation data: A statistical perspective.
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Miloch, Wojciech Jacek; Alfonsi, Lucilla; Spogli, Luca; Urbar, Jaroslav; Cesaroni, Claudio & Cicone, Antonio
[Vis alle 15 forfattere av denne artikkelen]
(2022).
Swarm – VIP: Variability of Ionospheric Plasma studied and modelled based on data from the Swarm satellites.
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Buschmann, Lisa Marie; Spicher, Andres; Clausen, Lasse; Marholm, Sigvald & Miloch, Wojciech Jacek
(2022).
Role of particle precipitation on plasma structuring at different altitudes by in-situ measurements.
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Enengl, Florine; Kotova, Daria; Jin, Yaqi; Clausen, Lasse & Miloch, Wojciech Jacek
(2022).
Ionospheric plasma irregularities in relation to dynamic auroral forms.
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Jin, Yaqi; Miloch, Wojciech Jacek; Alfonsi, Lucilla; Spogli, Luca; Urbar, Jaroslav & Cesaroni, Claudio
[Vis alle 13 forfattere av denne artikkelen]
(2022).
Variability of Ionospheric Plasma studied and modelled based on data from the Swarm satellites .
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Spicher, Andres; LaBelle, James William; Bonnell, John W.; Roglans, Roger; Moser, Chrystal & Fuselier, Stephen A.
[Vis alle 18 forfattere av denne artikkelen]
(2022).
Sounding rocket investigation of multi-scale (density) irregularities in the cusp region.
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Di Mare, Francesca; Spicher, Andres; Clausen, Lasse; Miloch, Wojciech Jacek; Takahashi, Toru & Moen, Jøran Idar
(2021).
Turbulence and Intermittency in the Winter Cusp Ionosphere studied with the ICI Sounding Rockets .
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Spicher, Andres; Moen, Jøran Idar; LaBelle, James William; Bonnell, John W; Roglans, Roger & Moser, Chrystal
[Vis alle 18 forfattere av denne artikkelen]
(2021).
Sounding rocket studies of ionospheric turbulence above Svalbard.
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Every morning between about 06 UT and 11 UT, Svalbard rotates just below the cusps (dayside aurora), where direct coupling between the solar wind, magnetosphere and ionosphere occurs. This provides a unique window to study the dayside aurora and the highly dynamic processes associated with it, examples of which include electron and ion precipitation and heating, electrostatic and electromagnetic waves, as well as turbulence.
In this work, we focus on the turbulence which, alongside with being of pure scientific interest, can also have societal impacts. Indeed, the “irregular” electron density structures associated with it can affect our technology infrastructures by for instance degrading High Frequency (HF) communication and Global Navigation Satellite Systems (GNSS) signals.
After briefly reviewing some of the mechanisms believed to be important in the development of turbulence in the high-latitude ionosphere, we present recent observations of density irregularities obtained by sounding rockets above Svalbard. We focus on measurements made as a part of the
Grand Challenge Initiative (GCI) Cusp, an international project combining sounding rockets missions and ground-based instruments to study the cusps. We show detailed characterization of the nature of the irregularities including their phase velocity and wavelengths, helping shedding light onto the process(es) involved in their formation, especially at the scales important for Space weather applications.
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Miloch, Wojciech Jacek; Usui, Hideyuki; Miyake, Yohei; Mortensen, Mikael; Chernyshov, A.A. & Baddeley, Lisa
[Vis alle 11 forfattere av denne artikkelen]
(2021).
Long-term and sustainable research- based student mobility projects within space weather.
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Miloch, Wojciech Jacek; Alfonsi, Lucilla; Spogli, Luca; Urbar, Jaroslav; Cesaroni, C & Cicone, Antonio
[Vis alle 14 forfattere av denne artikkelen]
(2021).
Variability of ionosphere studied and modelled based on data from the Swarm satellites.
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Miloch, Wojciech Jacek; Alfonsi, Lucilla; Spogli, Luca; Wood, Alan; Sahtahmassebi, Golnaz & Clausen, Lasse
[Vis alle 10 forfattere av denne artikkelen]
(2020).
Variability of Ionospheric Plasma Based on Swarm Satellite Data.
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Miloch, Wojciech Jacek; Jin, Yaqi; Xiong, Chao; Brask, Steffen Mattias; Kotova, Daria & Kervalishvili, Guram
[Vis alle 9 forfattere av denne artikkelen]
(2020).
Ionospheric Plasma IRregularities (IPIR data products).
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Spicher, Andres; LaBelle, James William; Bonnell, John W; Bounds, Scott; Clausen, Lasse Boy Novock & Di Mare, Francesca
[Vis alle 16 forfattere av denne artikkelen]
(2020).
On multi-scale density irregularities observed by sounding rockets within regions of enhanced scintillations in the cusp ionosphere.
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Di Mare, Francesca; Spicher, Andres; Clausen, Lasse Boy Novock; Miloch, Wojciech Jacek & Moen, Jøran Idar
(2020).
Turbulent Signatures in the Polar Cusp Ionosphere
using sounding rocket mission observations
.
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Di Mare, Francesca; Spicher, Andres; Clausen, Lasse Boy Novock; Miloch, Wojciech Jacek & Moen, Jøran Idar
(2020).
Turbulence Signatures in the Polar/Cusp Ionosphere based on ICI sounding rocket missions
.
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Miloch, Wojciech Jacek; Kotova, Daria; Jin, Yaqi; Xiong, Chao; Brask, Steffen & Kervalishvili, Guram
[Vis alle 9 forfattere av denne artikkelen]
(2019).
Ionospheric plasma irregularities studied globally with the Swarm satellites
.
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Di Mare, Francesca; Spicher, Andres; Clausen, Lasse Boy Novock & Moen, Jøran Idar
(2019).
Turbulence observations in the Polar/Cusp Ionosphere using ICI sounding rocket data.
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Di Mare, Francesca; Spicher, Andres; Clausen, Lasse Boy Novock & Moen, Jøran Idar
(2019).
Mapping of turbulence at the high-latitude Ionosphere using ICI-2 and ICI-3 sounding rocket data.
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Di Mare, Francesca; Spicher, Andres; Clausen, Lasse Boy Novock & Moen, Jøran Idar
(2019).
Turbulence observations in the Polar/Cusp Ionosphere using ICI data missions.
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Spicher, Andres; Moen, Jøran Idar; Clausen, Lasse Boy Novock & Miloch, Wojciech Jacek
(2019).
On the source and nature of ionospheric plasma irregularities: advances made through the Investigation of Cusp irregularities sounding rocket program .
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Spicher, Andres; Deshpande, Kshitija; Zettergren, Matthew D.; Oksavik, Kjellmar; Jin, Yaqi & Clausen, Lasse Boy Novock
[Vis alle 7 forfattere av denne artikkelen]
(2019).
Modeling scintillation produced by ionospheric Kelvin Helmholtz in the cusp ionosphere using GEMINI-SIGMA.
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Ionospheric irregularities are known to cause fluctuations in radio signals called scintillation in the phase and amplitude of the complex signal. The turbulent structures responsible for the scintillation are a few hundreds of meters to few tens of kilometers scale sizes (intermediate scale sizes). With the growing interest in high latitude scintillation, we would like to investigate the effect of typical physical mechanisms on the radio scintillation.
Here we present our modeling studies of Global Positioning System (GPS) scintillation through Kelvin Helmholtz instability (KHI) in the cusp region. For modeling we use the first principles based Geospace Environment Model of Ion-Neutral Interactions (GEMINI) and Satellite-beacon Ionospheric-scintillation Global Model of the upper Atmosphere (SIGMA). We utilize a cusp event study with detailed observations from the EISCAT Svalbard Radar (ESR) and scintillations detected from a network of four Global Navigation Satellite Systems (GNSS) receivers in Svalbard. The event presents evidences of the role of magnetosphere-ionosphere coupling in the generation of plasma irregularities and scintillations in the cusp. Using numerical simulations, we investigate the potential role of the Kelvin-Helmholtz instability in producing such scintillation. Furthermore, we compare the results with characteristics of GPS scintillations associated with a polar cap patch and the gradient drift instability to deduce distinctive characteristics of the respective plasma irregularities.
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Spicher, Andres; Oksavik, Kjellmar; Jin, Yaqi; Clausen, Lasse Boy Novock; Zettergren, Matthew D. & Deshpande, K. B.
[Vis alle 8 forfattere av denne artikkelen]
(2019).
A reverse flow event as the onset of ionospheric scintillation irregularities in the cusp.
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Spicher, Andres; Oksavik, Kjellmar; Jin, Yaqi; Moen, Jøran Idar; Baddeley, Lisa & Clausen, Lasse Boy Novock
(2019).
On the sources of Cusp Ionospheric Scintillation Irregularities.
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Spicher, Andres; Moen, Jøran Idar; Clausen, Lasse Boy Novock; Miloch, Wojciech Jacek & Blix, Kolbjørn
(2018).
4DSpace long term plans towards a multi-satellite M-Class mission.
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Moen, Jøran Idar; Hoang, Huy Minh; Clausen, Lasse Boy Novock & Trondsen, Espen
(2018).
The multi-Needle Langmuir probe system for exploration of the global ionosphere.
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Spicher, Andres; Clausen, Lasse Boy Novock; Miloch, Wojciech Jacek; Jin, Yaqi; Lofstad, Victoria Emilie & Moen, Jøran Idar
(2018).
Polar cap patch climatology based on Swarm density data.
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Moen, Jøran Idar; Oksavik, Kjellmar; Carlson, Herbert C; Spicher, Andres; Bekkeng, Tore Andre & Clausen, Lasse Boy Novock
[Vis alle 11 forfattere av denne artikkelen]
(2018).
The Investigation of Cusp Irregularities Rocket Program.
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Jin, Yaqi; Miloch, Wojciech Jacek; Clausen, Lasse Boy Novock; Spicher, Andres; Stolle, Claudia & Kervalishvili, G.
[Vis alle 7 forfattere av denne artikkelen]
(2018).
Ionospheric Plasma Irregularities Characterized by the Swarm satellites.
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Jin, Yaqi; Spicher, Andres; Xiong, Chao; Clausen, Lasse Boy Novock; Stolle, Claudia & Kervalishvili, G.
[Vis alle 7 forfattere av denne artikkelen]
(2018).
Detecting high-latitude ionospheric plasma irregularities by Swarm satellites.
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Brinkman, D. G.; Walterscheid, R. L.; Clemmons, J.H.; Hecht, J. H.; Lessard, Marc R. & Fritz, B
[Vis alle 11 forfattere av denne artikkelen]
(2017).
High Resolution Modeling of the Thermospheric Response to Energy Inputs during the RENU-2 Rocket Flight.
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Kenward, D.; Lessard, M.; Lynch, Kristina A.; Hysell, David; Hampton, Donald L. & Michell, R.
[Vis alle 13 forfattere av denne artikkelen]
(2017).
Examination of Cross-Scale Coupling During Auroral Events using RENU2 and ISINGLASS Sounding Rocket Data.
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Moen, Jøran Idar; Oksavik, Kjellmar; Carlson, Herbert C; Stausland, Christoffer T; Clausen, Lasse Boy Novock & Daabakk, Yvonne
[Vis alle 12 forfattere av denne artikkelen]
(2017).
Kelvin Helmholtz and Gradient Drift instabilities in ionosphere cusp flow channels.
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Antonsen, Tarjei; Havnes, Ove; Latteck, Ralph; Höffner, Josef; Baumgarten, Gerd & Friedrich, Martin
[Vis alle 8 forfattere av denne artikkelen]
(2017).
Simultaneous In Situ and Remote Observations of Dust in the Polar Summer Mesosphere: An Overview of the MAXIDUSY Campaign.