Wojciech J. Miloch

• Spogli, Luca; Jin, Yaqi; Urbář, Jaroslav; Wood, Alan G.; Donegan-Lawley, Elizabeth E. & Clausen, Lasse [Vis alle 20 forfattere av denne artikkelen] (2024). Statistical models of the variability of plasma in the topside ionosphere: 2. Performance assessment. Journal of Space Weather and Space Climate. ISSN 2115-7251. 14. doi: 10.1051/swsc/2024003.
• Holen, Gaute Arnesson; Adhikari, Sayan; Mishra, Rinku & Miloch, Wojciech Jacek (2024). Self-organising phenomena in 2D complex plasma simulations withnon-mono dispersed dust size distributions. Physica Scripta. ISSN 0031-8949. 99(5). doi: 10.1088/1402-4896/ad37dd.
• Moulick, Rakesh; Adhikari, Sayan; Sharma, Gunjan; Saikia, B.K. & Miloch, Wojciech Jacek (2024). Particle-In-Cell simulation of electrostatic waves in the ionosphere. Advances in Space Research. ISSN 0273-1177. doi: 10.1016/j.asr.2024.02.009.
• Sinevich, A.A.; Chernyshov, A.A.; Chugunin, D.V.; Miloch, Wojciech Jacek & Mogilevsky, M.M. (2024). The Polarization Jet/SAID and Plasma Irregularities of Different Scales. Bulletin of the Russian Academy of Sciences: Physics. ISSN 1062-8738. doi: 10.1134/S1062873823705548.
• Brask, Steffen Mattias; Mishra, Rinku; Holen, Gaute Arnesson; Miyake, Y.; Usui, H. & Miloch, Wojciech Jacek (2024). Spherical Langmuir probes in magnetized plasma. A model based on particle-in-cell simulations. Physics of Plasmas. ISSN 1070-664X. 31(2). doi: 10.1063/5.0177775.
• Buschmann, Lisa Marie; Clausen, Lasse; Spicher, Andres; Ivarsen, Magnus Fagernes & Miloch, Wojciech Jacek (2024). Statistical Studies of Plasma Structuring in the Auroral Ionosphere by the Swarm Satellites. Journal of Geophysical Research (JGR): Space Physics. ISSN 2169-9380. 129(2). doi: 10.1029/2023JA032097.
• Brask, Steffen Mattias; Marholm, Sigvald; Miloch, Wojciech Jacek & Marchand, R. (2024). Effects of guard and boom on needle Langmuir probes studied with particle-in-cell simulations. Journal of Plasma Physics. ISSN 0022-3778. 90(1). doi: 10.1017/S0022377823001411. Fulltekst i vitenarkiv
• Enengl, Florine; Spogli, L.; Kotova, Daria; Jin, Yaqi; Oksavik, Kjellmar & Partamies, Noora [Vis alle 7 forfattere av denne artikkelen] (2024). Investigation of Ionospheric Small-Scale Plasma Structures Associated With Particle Precipitation. Space Weather. ISSN 1542-7390. 22(1). doi: 10.1029/2023SW003605.
• Sinevich, A.A.; Chernyshov, A.A.; Chugunin, D.V.; Mogilevsky, M.M. & Miloch, Wojciech Jacek (2023). The Internal Structure of a Polarization Jet/SAID: A Stratified Polarization Jet/SAID. Geomagnetism and Aeronomy. ISSN 0016-7932. 63(6), s. 747–756. doi: 10.1134/S0016793223600583.
• Ssessanga, Nicholas; Miloch, Wojciech Jacek; Clausen, Lasse & Kotova, Daria (2023). Performance Analysis of a Strong Constraint 4DVar and 4DEnVar on Regional Ionosphere Imaging. Space Weather. ISSN 1542-7390. 21(12). doi: 10.1029/2023SW003584. Fulltekst i vitenarkiv
• Jin, Yaqi; Moen, Jøran Idar; Spicher, Andres; Liu, Jianjun; Clausen, Lasse & Miloch, Wojciech Jacek (2023). Ionospheric Flow Vortex Induced by the Sudden Decrease in the Solar Wind Dynamic Pressure. Journal of Geophysical Research (JGR): Space Physics. ISSN 2169-9380. 128(11). doi: 10.1029/2023JA031690. Fulltekst i vitenarkiv Vis sammendrag

  Abrupt changes in the solar wind dynamic pressure can greatly affect the Earth's magnetosphere-ionosphere system. We present an ionospheric flow vortex in the morning sector during the sudden decrease in the solar wind dynamic pressure. The flow vortex was clearly observed by both the Hankasalmi radar and the azimuthal scan mode of the European Incoherent Scatter (EISCAT) Svalbard Radar (ESR). The flow vortex was first seen in the eastern field of view (FOV) of the Hankasalmi radar, and then propagated poleward and westward into the FOV of the ESR. During the passage of the flow vortex, a gradual decrease of electron density was observed by the field-aligned ESR 42 m antenna. When the equatorward directed ionospheric flow reached the ESR site, weak and visible increases in the electron density and electron temperature were observed. This impact was likely caused by soft electron precipitation associated with the clockwise flow vortex and upward field-aligned current. The azimuthal scan mode of the ESR 32 m radar at low elevation angle (30°) allowed us to measure key ionospheric parameters over a larger area (6° in latitude and 120° in azimuthal angle). The latitudinal scan of the electron temperature was used to proxy the equatorward auroral boundary, which shows that the flow vortex was located in the subauroral region. We further demonstrated that it is possible to study the weak increase of electron density by using GPS total electron content (TEC) data. A minor TEC increase was observed near the center of the flow vortex.

• Piterskaya, Anna; Miloch, Wojciech Jacek & Mortensen, Mikael (2023). A global spectral-Galerkin investigation of a Rayleigh-Taylor instability in plasma using an MHD-Boussinesq model. AIP Advances. ISSN 2158-3226. 13(10). doi: 10.1063/5.0155976. Fulltekst i vitenarkiv
• Tsagouri, Ioanna; Themens, David R.; Belehaki, Anna; Shim, Ja-Soon; Hoque, Mainul M. & Nykiel, Grzegorz [Vis alle 10 forfattere av denne artikkelen] (2023). Ionosphere variability II: Advances in theory and modeling. Advances in Space Research. ISSN 0273-1177. doi: 10.1016/j.asr.2023.07.056.
• Tsagouri, Ioanna; Belehaki, Anna; Themens, David R.; Jakowski, Norbert; Fuller-Rowell, Tim & Hoque, Mainul M. [Vis alle 13 forfattere av denne artikkelen] (2023). Ionosphere variability I: Advances in observational, monitoring and detection capabilities. Advances in Space Research. ISSN 0273-1177. doi: 10.1016/j.asr.2023.07.024.
• Jin, Yaqi; Miloch, Wojciech Jacek; Kotova, Daria; Jacobsen, Knut Stanley; Stevanović, Đorđe & Clausen, Lasse [Vis alle 8 forfattere av denne artikkelen] (2023). Modeling TEC Irregularities in the Arctic Ionosphere Using Empirical Orthogonal Function Method. Space Weather. ISSN 1542-7390. 21(8). doi: 10.1029/2023SW003531. Fulltekst i vitenarkiv
• Baddeley, Lisa; Lorentzen, Dag Arne; Haaland, Stein Egil; Heino, Erkka Petteri; Mann, Ingrid Brigitte & Miloch, Wojciech Jacek [Vis alle 10 forfattere av denne artikkelen] (2023). Space and atmospheric physics on Svalbard: a case for continued incoherent scatter radar measurements under the cusp and in the polar cap boundary region. Progress in Earth and Planetary Science. ISSN 2197-4284. 10. doi: 10.1186/s40645-023-00585-9. Fulltekst i vitenarkiv Vis sammendrag

  Incoherent scatter radars (ISRs) represent the only instrument (both ground and space based) capable of making high temporal and spatial resolution measurements of multiple atmospheric parameters—such as densities, temperatures, particle velocities, mass flux—over an altitude range covering the entire mesosphere/lower thermosphere/ionosphere (MLTI) system on a quasi-continuous basis. The EISCAT Svalbard incoherent scatter radar (ESR), located just outside Longyearbyen (78.15∘ N) on Svalbard, is the only currently operating facility capable of making such measurements inside the polar cusp—an area of significant energy input into the atmosphere and characterized by heating instabilities and turbulence. The ESR was built in the mid-1990s and has provided valuable data for the international experimental and modelling communities. New radar technologies are now available, in the form of phased array systems, which offer new data products and operational flexibility. This paper outlines the achievements and current research focus of the ESR and provides scientific arguments, compiled from inputs across the international scientific community, for a new phased array ISR facility on Svalbard. In addition to the fundamental scientific arguments, the paper discusses additional benefits of continued ISR observations on Svalbard, building on the key findings of the ESR. Svalbard has a large network of complementary instrumentation both focused on the MLTI system (e.g. the Kjell Henriksen auroral Observatory, the Svalbard SuperDARN radar and the Svalrak sounding rocket launch facility) with synergies to other research fields, such as meteorology and oceanography. As a further holistic system science view of the Earth becomes more important, a new ISR on Svalbard will be important also in this respect with its ability to provide datasets with a wide range of scientific applications. Increased activity in space has highlighted problematic issues such as space debris. A changing Arctic has also seen increased human activity via the opening up of new shipping routes, which are reliant on GNSS technology that is effected by severe turbulence in the MLTI system. As such, societal applications of a future ISR are also presented. The accessibility and logistical support for such a facility is also briefly discussed.

• Buschmann, Lisa Marie; Bonnell, John W.; Bounds, Scott; Clausen, Lasse; Kletzing, Craig & Marholm, Sigvald [Vis alle 9 forfattere av denne artikkelen] (2023). The role of particle precipitation on plasma structuring at different altitudes by in-situ measurements. Journal of Space Weather and Space Climate. ISSN 2115-7251. 13. doi: 10.1051/swsc/2023012. Fulltekst i vitenarkiv
• Sarris, Theodoros; Palmroth, Minna; Aikio, Anita; Buchert, Stephan Christoph; Clemmons, James & Clilverd, Mark [Vis alle 29 forfattere av denne artikkelen] (2023). Plasma-neutral interactions in the lower thermosphere-ionosphere: The need for in situ measurements to address focused questions. Frontiers in Astronomy and Space Sciences. 9. doi: 10.3389/fspas.2022.1063190. Fulltekst i vitenarkiv
• Sarris, Theodore E.; Tourgaidis, Stelios; Pirnaris, Panagiotis; Baloukidis, Dimitris; Papadakis, Konstantinos & Psychalas, Christos [Vis alle 42 forfattere av denne artikkelen] (2023). Daedalus MASE (mission assessment through simulation exercise): A toolset for analysis of in situ missions and for processing global circulation model outputs in the lower thermosphere-ionosphere. Frontiers in Astronomy and Space Sciences. 9. doi: 10.3389/fspas.2022.1048318. Fulltekst i vitenarkiv
• Sinevich, A.A.; Chernyshov, A.A.; Chugunin, D.V.; Clausen, Lasse; Miloch, Wojciech Jacek & Mogilevsky, M.M. (2023). Stratified Subauroral Ion Drift (SSAID). Journal of Geophysical Research (JGR): Space Physics. ISSN 2169-9380. 128(3). doi: 10.1029/2022JA031109. Fulltekst i vitenarkiv
• Sado, Pascal; Clausen, Lasse; Miloch, Wojciech Jacek & Nickisch, H. (2023). Substorm Onset Prediction Using Machine Learning Classified Auroral Images. Space Weather. ISSN 1542-7390. 21(2), s. 1–9. doi: 10.1029/2022SW003300. Fulltekst i vitenarkiv
• Kjølerbakken, Kai Morgan; Miloch, Wojciech Jacek & Røed, Ketil (2023). Sheath formation time for spherical Langmuir probes. Journal of Plasma Physics. ISSN 0022-3778. 89(1). doi: 10.1017/S0022377822001027. Fulltekst i vitenarkiv Vis sammendrag

  The formation time of the surrounding sheath of Langmuir probes in an ionospheric plasma has been studied to better understand the constraints this puts on the sampling frequency of a probe. A fully kinetic three-dimensional particle-in-cell model is used to simulate the temporal effects in the electron saturation region as the sheath forms. The stability of the probe current and the stability of the ion and electron density in the vicinity of the probe have been used to evaluate when the sheath was formed. Simulated results were compared with theoretical models and are in good agreement with the theoretical results. This shows that theoretical models can be used as guidance to estimate the formation time and to determine the sampling rate for a swept bias Langmuir system. Our results also show that the formation time is less affected by the plasma temperature and bias voltage as we move into the thick sheath regime, and will instead be determined by the plasma density. The presented results also show that applying a step function to the probe could be used to characterise ions species composition, or to estimate the ion density.

• Enengl, Florine; Kotova, Daria; Jin, Yaqi; Clausen, Lasse & Miloch, Wojciech Jacek (2023). Ionospheric plasma structuring in relation to auroral particle precipitation. Journal of Space Weather and Space Climate. ISSN 2115-7251. 13(4). doi: 10.1051/swsc/2022038.
• Kotova, Daria; Jin, Yaqi; Spogli, Luca; Wood, Alan G.; Urbar, Jaroslav & Rawling, 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. Advances in Space Research. ISSN 0273-1177. doi: 10.1016/j.asr.2022.11.042. Fulltekst i vitenarkiv
• Jin, Yaqi; Kotova, Daria; Xiong, Chao; Brask, Steffen Mattias; Clausen, Lasse & Kervalishvili, Guram [Vis alle 8 forfattere av denne artikkelen] (2022). Ionospheric Plasma IRregularities - IPIR - data product based on data from the Swarm satellites. Journal of Geophysical Research (JGR): Space Physics. ISSN 2169-9380. 127(4). doi: 10.1029/2021JA030183.
• Paziewski, Jacek; Høeg, Per; Sieradzki, Rafal; Jin, Yaqi; Jarmolowski, Wojciech & Hoque, M. Mainul [Vis alle 12 forfattere av denne artikkelen] (2022). The implications of ionospheric disturbances for precise GNSS positioning in Greenland. Journal of Space Weather and Space Climate. ISSN 2115-7251. 12. doi: 10.1051/swsc/2022029. Fulltekst i vitenarkiv
• Wood, Alan G.; Alfonsi, Lucilla; Clausen, Lasse; Jin, Yaqi; Spogli, Luca & Urbář, Jaroslav [Vis alle 19 forfattere av denne artikkelen] (2022). Variability of Ionospheric Plasma: Results from the ESA Swarm Mission. Space Science Reviews. ISSN 0038-6308. 218(6). doi: 10.1007/s11214-022-00916-0. Fulltekst i vitenarkiv
• Alfonsi, Lucilla; Bergeot, Nicolas; Cilliers, Pierre J.; De Franceschi, Giorgiana; Baddeley, Lisa & Correia, Emilia [Vis alle 38 forfattere av denne artikkelen] (2022). Review of Environmental Monitoring by Means of Radio Waves in the Polar Regions: From Atmosphere to Geospace. Surveys in geophysics. ISSN 0169-3298. 43, s. 1609–1698. doi: 10.1007/s10712-022-09734-z. Fulltekst i vitenarkiv Vis sammendrag

  The Antarctic and Arctic regions are Earth's open windows to outer space. They provide unique opportunities for investigating the troposphere–thermosphere–ionosphere–plasmasphere system at high latitudes, which is not as well understood as the mid- and low-latitude regions mainly due to the paucity of experimental observations. In addition, different neutral and ionised atmospheric layers at high latitudes are much more variable compared to lower latitudes, and their variability is due to mechanisms not yet fully understood. Fortunately, in this new millennium the observing infrastructure in Antarctica and the Arctic has been growing, thus providing scientists with new opportunities to advance our knowledge on the polar atmosphere and geospace. This review shows that it is of paramount importance to perform integrated, multi-disciplinary research, making use of long-term multi-instrument observations combined with ad hoc measurement campaigns to improve our capability of investigating atmospheric dynamics in the polar regions from the troposphere up to the plasmasphere, as well as the coupling between atmospheric layers. Starting from the state of the art of understanding the polar atmosphere, our survey outlines the roadmap for enhancing scientific investigation of its physical mechanisms and dynamics through the full exploitation of the available infrastructures for radio-based environmental monitoring.

• Urbar, Jaroslav; Spogli, Luca; Cicone, Antonio; Clausen, Lasse; Jin, Yaqi & Wood, Alan G. [Vis alle 11 forfattere av denne artikkelen] (2022). Multi-scale response of the high-latitude topside ionosphere to geospace forcing. Advances in Space Research. ISSN 0273-1177. doi: 10.1016/j.asr.2022.06.045. Fulltekst i vitenarkiv
• Jin, Yaqi; Clausen, Lasse; Miloch, Wojciech Jacek; Høeg, Per; Jarmołowski, Wojciech & Wielgosz, Pawel [Vis alle 13 forfattere av denne artikkelen] (2022). Climatology and modeling of ionospheric irregularities over Greenland based on empirical orthogonal function method. Journal of Space Weather and Space Climate. ISSN 2115-7251. 12(23). doi: 10.1051/swsc/2022022. Fulltekst i vitenarkiv
• Spicher, Andres; LaBelle, James; Bonnell, John W.; Roglans, Roger; Moser, Chrystal & Fuselier, Stephen A. [Vis alle 18 forfattere av denne artikkelen] (2022). Interferometric Study of Ionospheric Plasma Irregularities in Regions of Phase Scintillations and HF Backscatter. Geophysical Research Letters. ISSN 0094-8276. 49(12). doi: 10.1029/2021GL097013. Fulltekst i vitenarkiv Vis sammendrag

  We investigate the nature of small-scale irregularities observed in the cusp by the Twin Rockets to Investigate Cusp Electrodynamics-2 (TRICE-2) in regions of enhanced phase scintillations and high-frequency coherent radar backscatter. We take advantage of the fact that the irregularities were detected by spatially separated probes, and present an interferometric analysis of both the observed electron density and electric field fluctuations. We provide evidence that fluctuations spanning a few decameters to about a meter have low phase velocity in the plasma reference frame and are nondispersive, confirming that decameter-scale irregularities follow the E × B velocity. Furthermore, we show that these “spatial” structures are intermittent and prominent outside of regions with strongest precipitation. The observations are then discussed in the context of possible mechanisms for irregularity creation.

• Sinevich, A.A.; Chernyshov, A.A.; Chugunin, D.V.; Oinats, A.V.; Clausen, Lasse & Miloch, Wojciech Jacek [Vis alle 8 forfattere av denne artikkelen] (2022). Small-Scale Irregularities Within Polarization Jet/SAID During Geomagnetic Activity. Geophysical Research Letters. ISSN 0094-8276. 49(8). doi: 10.1029/2021GL097107. Fulltekst i vitenarkiv
• Kotova, Daria; Jin, Yaqi & Miloch, Wojciech Jacek (2022). Interhemispheric variability of the electron density and derived parameters by the Swarm satellites during different solar activity. Journal of Space Weather and Space Climate. ISSN 2115-7251. 12, s. 1–21. doi: 10.1051/swsc/2022007. Fulltekst i vitenarkiv
• Kjølerbakken, Kai Morgan; Miloch, Wojciech Jacek; Martinsen, Ørjan Grøttem; Pabst, Oliver & Røed, Ketil (2022). Numerical Study of Non-Linear Effects for a Swept Bias Langmuir Probe. IEEE Transactions on Plasma Science. ISSN 0093-3813. 50(5), s. 1237–1245. doi: 10.1109/TPS.2022.3164220. Fulltekst i vitenarkiv Vis sammendrag

  We present a numerical study disclosing non-linear effects and hysteresis loops for a swept bias Langmuir probe. A full kinetic particle in cell (PIC) model has been used to study the temporal sheath effects and the probe current. Langmuir "close to steady state" condition is required to characterize the plasma. However, during operations above frequencies normally used, capacitive and non-linear resistive effects are being unveiled. We demonstrate how ion and electron density and temperature change properties of the probe-plasma system. We also show that a swept Langmuir probe exhibits essential properties described as the "fingerprint of memristors" and how a Langmuir probe can be identified as a transversal memristor. Understanding non-linear processes might enable new ways to operate Langmuir probes with higher sampling rates and better accuracy.

• Belakhovsky, V.B.; Jin, Yaqi & Miloch, Wojciech Jacek (2022). Dayside Scintillations of GPS Signals According to the Observations on the Svalbard Archipelago. Bulletin of the Russian Academy of Sciences: Physics. ISSN 1062-8738. 86(3), s. 348–353. doi: 10.3103/S1062873822030066.
• Brask, Steffen Mattias; Marholm, Sigvald; Di Mare, Francesca; Adhikari, Sayan; Spicher, Andres & Takahashi, T. [Vis alle 7 forfattere av denne artikkelen] (2022). Electron-neutral collisions effects on Langmuir probe in the lower E-region ionosphere. Physics of Plasmas. ISSN 1070-664X. 29(3). doi: 10.1063/5.0079761. Fulltekst i vitenarkiv
• Sado, Pascal; Clausen, Lasse; Miloch, Wojciech Jacek & Nickisch, Hannes (2021). Transfer Learning Aurora Image Classification and Magnetic Disturbance Evaluation. Journal of Geophysical Research (JGR): Space Physics. ISSN 2169-9380. doi: 10.1029/2021JA029683. Fulltekst i vitenarkiv
• Jao, Chun-Sung; Marholm, Sigvald; Spicher, Andres & Miloch, Wojciech Jacek (2021). Wake formation behind Langmuir probes in ionospheric plasmas. Advances in Space Research. ISSN 0273-1177. 69(2), s. 856–868. doi: 10.1016/j.asr.2021.11.012. Fulltekst i vitenarkiv
• Monte-Moreno, Enric; Hernández-Pajares, Manuel; Yang, Heng; Alberto Garcia, Rigo; Jin, Yaqi & Høeg, Per [Vis alle 13 forfattere av denne artikkelen] (2021). Method for Forecasting Ionospheric Electron Content Fluctuations Based on the Optical Flow Algorithm. IEEE Transactions on Geoscience and Remote Sensing. ISSN 0196-2892. doi: 10.1109/TGRS.2021.3126888.
• Sinevich, A.A.; Chernyshov, A.A.; Chugunin, D.V.; Miloch, Wojciech Jacek & Mogilevsky, M.M. (2021). Spatial Structure of Polarization Jet according to NorSat-1 and Swarm Satellite Data. Cosmic research. ISSN 0010-9525. 59(6), s. 463–471. doi: 10.1134/S0010952521060095.
• Sinevich, A. A.; Chernyshov, A.A.; Chugunin, Dmitry V.; Miloch, Wojciech Jacek & Mogilevsky, Mikhail M. (2021). Studying the small-scale structure of a polarization jet during the April 20, 2018 geomagnetic storm. Solar-Terrestrial Physics. ISSN 2500-0535. 7(1), s. 21–33. doi: 10.12737/szf-71202103. Fulltekst i vitenarkiv
• Palmroth, Minna; Grandin, Maxime; Sarris, Theodoros E.; Doornbos, Eelco; Tourgaidis, Stylianos & Aikio, Anita [Vis alle 35 forfattere av denne artikkelen] (2021). Lower-thermosphere–ionosphere (LTI) quantities: current status of measuring techniques and models. Annales Geophysicae. ISSN 0992-7689. 39, s. 189–237. doi: 10.5194/angeo-39-189-2021. Fulltekst i vitenarkiv
• Belakhovsky, Vladimir Borisovich; Jin, Yaqi & Miloch, Wojciech Jacek (2021). Influence of different types of ionospheric disturbances on GPS signals at polar latitudes. Annales Geophysicae. ISSN 0992-7689. 39, s. 687–700. doi: 10.5194/angeo-39-687-2021. Fulltekst i vitenarkiv
• Jin, Yaqi; Clausen, Lasse; Spicher, Andres; Ivarsen, Magnus Fagernes; Zhang, Yongliang & Miloch, Wojciech Jacek [Vis alle 7 forfattere av denne artikkelen] (2021). Statistical Distribution of Decameter Scale (50 m) Ionospheric Irregularities at High Latitudes. Geophysical Research Letters. ISSN 0094-8276. 48(19). doi: 10.1029/2021GL094794. Fulltekst i vitenarkiv
• Ivarsen, Magnus Fagernes; Jin, Yaqi; Spicher, Andres; Miloch, Wojciech Jacek & Clausen, Lasse (2021). The Lifetimes of Plasma Structures at High Latitudes. Journal of Geophysical Research (JGR): Space Physics. ISSN 2169-9380. 126. doi: 10.1029/2020JA028117. Fulltekst i vitenarkiv
• Skjæveland, Arnlaug; Kotova, Daria S. & Miloch, Wojciech J. (2021). Case Studies of Ionospheric Plasma Irregularities Over Queen Maud Land, Antarctica. Journal of Geophysical Research (JGR): Space Physics. ISSN 2169-9380. 126(10). doi: 10.1029/2021JA029963. Fulltekst i vitenarkiv Vis sammendrag

  We use the first data set from the ground-based TEC and scintillation receiver located at the Norwegian Research Station Troll in Queen Maud Land, Antarctica to analyze in detail the ionospheric response during geomagnetic disturbances on February 26-27 and March 18-19, 2018. By combining the Troll data with complementary measurements (scintillation receivers, magnetometers, SuperDARN, DMSP satellites), we demonstrate that plasma irregularities above this part of Queen Maud Land can be associated with the expansion of the auroral oval, related structuring on its edges, as well as with strong flow shears in the evening and at nighttime, which are further modulated by the energetic particle precipitation. Phase scintillation indices correlate well with the magnetometer data.

• Ivarsen, Magnus Fagernes; St-Maurice, Jean-Pierre; Jin, Yaqi; Park, Jaeheung; Miloch, Wojciech Jacek & Spicher, Andres [Vis alle 8 forfattere av denne artikkelen] (2021). Steepening Plasma Density Spectra in the Ionosphere: The Crucial Role Played by a Strong E-Region. Journal of Geophysical Research (JGR): Space Physics. ISSN 2169-9380. 126(8). doi: 10.1029/2021JA029401. Fulltekst i vitenarkiv
• Di Mare, Francesca; Spicher, Andres; Clausen, Lasse; Miloch, Wojciech Jacek & Moen, Jøran Idar (2021). Turbulence and Intermittency in the Winter Cusp Ionosphere Studied With the ICI Sounding Rockets. Journal of Geophysical Research (JGR): Space Physics. ISSN 2169-9380. 126(8). doi: 10.1029/2021JA029150. Fulltekst i vitenarkiv
• Kjølerbakken, Kai Morgan; Miloch, Wojciech Jacek & Røed, Ketil (2021). The influence of probe spacing and probe bias in a double Langmuir probe setup. AIP Advances. ISSN 2158-3226. 11. doi: 10.1063/5.0058540. Fulltekst i vitenarkiv Vis sammendrag

  Multi-needle Langmuir probes are mounted on satellites and sounding rockets for high-frequency characterization of plasma in the ionosphere. Mounted on a spacecraft, the recorded probe current often differs from expected results. In this paper, we perform a numerical study using a particle in cell model to see how the spacing between the individual probes used in a multi-needle setup influences the measured current. We also study how the applied probe bias voltage can contribute to deviations. In our study, we use realistic electron temperatures and electron densities for the relevant part of the ionosphere. However, the results should be generally applicable and valid for other space environments as well as for laboratory Langmuir probe applications. From our study, we can see that when the distance is short, less than two Debye lengths, the current is highly affected, and we can see deviations of more than 60% compared to a single probe setup.

• Zakharov, V.I.; Chernyshov, A.A.; Miloch, Wojciech Jacek & Jin, Yaqi (2020). Influence of the Ionosphere on the Parameters of the GPS Navigation Signals during a Geomagnetic Substorm. Geomagnetism and Aeronomy. ISSN 0016-7932. 60(6), s. 754–767. doi: 10.1134/S0016793220060158.
• Belakhovsky, V.B.; Jin, Yaqi & Miloch, Wojciech Jacek (2020). Influence of Different Ionospheric Disturbances on the GPS Scintillations at High Latitudes. Springer Proceedings in Earth and Environmental Sciences. ISSN 2524-342X. s. 281–287. doi: 10.1007/978-3-030-21788-4_24.
• Belakhovsky, V.B.; Jin, Yaqi & Miloch, Wojciech Jacek (2020). Influence of the substorm precipitation and polar cap patches on GPS signals at high latitudes. Sovremennye Problemy Distantsionnogo Zondirovaniya Zemli iz Kosmosa. ISSN 2070-7401. 17(6), s. 139–144. doi: 10.21046/2070-7401-2020-17-6-139-144.
• Miyake, Yohei; Miloch, Wojciech Jacek; Høymork, Solveig Helene & Pécseli, Hans L (2020). Electron Wing-Like Structures Formed at a Negatively Charged Spacecraft Moving in a Magnetized Plasma. Journal of Geophysical Research (JGR): Space Physics. ISSN 2169-9380. 125. doi: 10.1029/2019JA027379. Fulltekst i vitenarkiv
• Chernyshov, Alexander A.; Miloch, Wojciech Jacek; Jin, Yaqi & Zakharov, Viktor I. (2020). Relationship between TEC jumps and auroral substorm in the high-latitude ionosphere. Scientific Reports. ISSN 2045-2322. 10. doi: 10.1038/s41598-020-63422-9. Fulltekst i vitenarkiv
• Follestad, Anna Kristine Fæhn; Clausen, Lasse Boy Novock; Miloch, Wojciech Jacek; van den IJssel, J. & Haagmans, Roger (2020). Two-Dimensional Reconstruction of Ionospheric Plasma Density Variations Using Swarm. Space Weather. ISSN 1542-7390. 18. doi: 10.1029/2019SW002406. Fulltekst i vitenarkiv

Se alle arbeider i Cristin

• Spicher, Andres; Rexer, Theresa; Kvammen, Andreas; Madhanakumar, Mahith; Zettergren, M. & Oksavik, Kjellmar [Vis alle 11 forfattere av denne artikkelen] (2024). Characterization and Assessment of Structuring Connected to Auroral Dynamics using EISCAT_3D (CASCADE): A brief overview.
• Enengl, Florine; Marholm, Sigvald; Adhikari, Sayan; Marchand, Richard & Miloch, Wojciech Jacek (2023). Electron Temperature Inference from Fixed Bias Langmuir Probes Set-Ups in Ionospheric Conditions.
• Chugunin, Dmitry V.; Kotova, Daria; Sinevich, A. A.; Chernyshov, Alexander A. & Miloch, Wojciech Jacek (2023). Scintillations of GNSS receivers in the subauroral region in the southern hemisphere. Vis sammendrag

  The work studies the possible influence of a polarization jet/SAID (SubAuroral ion Drift) on the phase scintillations of GNSS receivers. We consider the geomagnetic case of March 18, 2018, when, according to the DMSP satellite data, a polarization jet/SAID was observed over the area of Antarctica, where two GNSS receivers were located. For a more complete analysis, this study also uses Super Dual Auroral Radar Network (SuperDARN) observations as well as Swarm and Norsat-1 satellite data for this geomagnetic substorm. From the analysis of the data, it is concluded that at the moment of auroral activity intensification, an increased intensity of phase scintillations was observed in the region of the polarization jet/SAID in the subauroral ionosphere.

• Kotova, Daria; Sinevich, A. A.; Chernyshov, Alexander A.; Chugunin, Dmitry V. & Miloch, Wojciech Jacek (2023). Effect of SAID on the Development of Ionospheric Scintillations and Irregularities in the Subauroral Region. Vis sammendrag

  The polarization jet, which is also known as the subauroral ion drift (SAID), is related to fast westward ion drifts. SAID is one of the main signatures of a geomagnetic disturbance in the subauroral ionosphere at the altitudes of the F-layer. SAID is a projection of the plasmapause onto the altitudes of the ionosphere, mainly during substorm periods when the AE index reaches more than 500 nT. SAID is characterized by a narrow jet (about 2º) and can have a duration of about several hours (in longitude). Plasma speed in SAID can reach several kilometers per second. Such high plasma velocities can lead to ionospheric scintillations affecting trans-ionospheric radio signals. For example, when radio signals of the Global Navigation Satellite System (GNSS) pass through ionospheric irregularities, receivers on the ground can observe rapid fluctuations in amplitude and/or phase of the incoming wave. These fluctuations can lead to serious deterioration of radio communication or navigational services. In this work, we analyze the possible influence of a polarization jet/SAID on the development of ionospheric scintillations and irregularities in the subauroral region. We consider the geomagnetic event on March 18, 2018 (with Kp = 6 and SYM-H = −53 nT), when according to the DMSP satellite data, a polarization jet/SAID was observed close to two GNSS Ionospheric Scintillation and TEC Monitor (GISTM) receivers in Antarctica (SANAE IV and Troll stations). For a more complete analysis, we also use data from nearby magnetometers at the Neumayer and SANAE IV stations, Super Dual Auroral Radar Network (SuperDARN) at SANAE IV, as well as from the Swarm and Norsat-1 satellites during considered substorm activity. We conclude that at the moment of auroral activity intensification, an increase in the magnitude of phase scintillation index (σφ) was observed in the region of the polarization jet/SAID in the subauroral ionosphere indicating high structuring of the ionospheric plasma. DK, WM acknowledge funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (ERC Consolidator Grant agreement No. 866357, POLAR-4DSpace). The work of ААS and AAC was supported by the Theoretical Physics and Mathematics Advancement Foundation "BASIS".

• Pedersen, Christina Alsvik; Schweitzer, Johannes; Njåstad, Brigit; Miloch, Wojciech Jacek; Aas, Wenche & Hudson, Stephen [Vis alle 12 forfattere av denne artikkelen] (2023). The New Norwegian Infrastructure - Troll Observing Network - under Establishment in Dronning Maud Land, Antarctica. Vis sammendrag

  Antarctica and the Southern Ocean are important parts of the Earth system. The physical and biological properties here to a large degree control and shape other parts of the Earth through atmospheric, cryospheric and oceanic connections. The Troll Observing Network – TONe - is a new comprehensive infrastructure centered around the Norwegian Troll Research Station in Dronning Maud Land. It will be an important contribution to global research efforts in this part of Antarctica, closing data gaps in Antarctic environmental observations and providing key data required to respond to the fundamental societal challenges and uncertainties facing the world today. The Norwegian and international partner consortium in TONe is in the process to develop the state-of-the-art, multi-platform, multi-disciplinary observatory network for environmental observations, and a remotely piloted aerial system (RPAS) services to collect data for studying and monitoring the atmosphere, terrestrial and marine environment. The observatory network consists of 8 observatories: an integrated cloud observatory, an atmosphere composition observatory, an infrasound array, an ionospheric observatory, a seismic array, an ice-shelf observatory, a multidisciplinary open ocean moored observatory and a sea-bird observatory. The key aspect of TONe is to ensure wide and free access to the data from the observatories and the RPAS services to the entire national and international research community. TONe as a whole will be implemented and fully operational from 2027, while single parts of the infrastructure will be available before that.

• 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.
• Enengl, Florine; Spogli, Luca; Kotova, Daria; Jin, Yaqi; Oksavik, Kjellmar & Partamies, Noora [Vis alle 7 forfattere av denne artikkelen] (2023). On the formation of small-scale irregularities driven by auroral particle precipitation.
• Enengl, Florine; Marholm, Sigvald; Adhikari, Sayan; Marchand, Richard & Miloch, Wojciech Jacek (2023). Electron Temperature Inference from Fixed Bias Langmuir Probes Set-Ups in Ionospheric Conditions.
• Pedersen, Christina Alsvik; Njåstad, Birgit; Descamps, Sebastien; Hattermann, Tore; Hudson, Stephen & Flått, Stig [Vis alle 11 forfattere av denne artikkelen] (2023). Troll observing network – for useful new data about Antarctica. Fram Forum. ISSN 1893-5532. 12, s. 120–125.
• Kotova, Daria; Jin, Yaqi & Miloch, Wojciech Jacek (2022). Interhemispheric investigation of variability of ionospheric parameters measured by the Swarm satellites for quiet geomagnetic conditions. Vis sammendrag

  The use of satellite data allows us to study the variability of ionospheric plasma parameters globally without references to ground stations or receivers in different regions of the Earth. The Swarm mission, which was launched in November 2013 and is still operational, allows us to investigate the effects of decreasing solar activity on ionospheric variability. We use the Swarm in-situ measurements of the electron density and derived parameters that have been combined into a unique dataset called the Ionospheric Plasma IRregularities product (IPIR) [1]. IPIR provides characteristics of the plasma variability along the orbit and gives information on plasma density structures in the ionosphere in terms of their amplitudes, gradients and spatial scales. In this study, we focused on distributions and statistics of these parameters in the Northern and Southern hemispheres for quiet geomagnetic conditions. Our results provide information on the shape of the distribution and probability density functions of electron density and derived ionospheric parameters that can be used as a baseline important for other modeling studies. Understanding the distribution of such parameters in the context of the geomagnetic activity and selected ionospheric regions can have implications for the development of new satellite instruments and for the accuracy of GNSS precise positioning. This work was supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (ERC Consolidator Grant agreement No. 866357, POLAR-4DSpace).

• Kotova, Daria; Jin, Yaqi; Spogli, Luca; Wood, Alan G.; Alfonsi, Lucilla & Urbar, Jaroslav [Vis alle 9 forfattere av denne artikkelen] (2022). Comparison Of Electron Density Fluctuations From Swarm Satellites With The Ground-based Scintillation Data: A Statistical Perspective. Vis sammendrag

  The Swarm satellite mission is actively used to conduct various studies of the ionosphere, focusing on such aspects as the electric and magnetic fields or plasma temperature, structuring and irregularities. The mission is a constellation of three satellites that were launched in November 2013 and have been collecting data continuously since then. We use a global product based on the Swarm satellite measurements that characterizes ionospheric irregularities and fluctuations. The IPIR (Ionospheric Plasma IRregularities product) provides in-situ characteristics of plasma density structures in the ionosphere, of plasma irregularities in terms of their amplitudes, gradients and spatial scales and assigns them to geomagnetic regions. Ionospheric irregularities and fluctuations are often the cause increases the error in position, velocity, time determination based on Global Navigation Satellite Systems (GNSS), which signals pass through the ionosphere. The IPIR provides an indication, in the form of a numerical value index, on severity of irregularities for the integrity of trans-ionospheric radio signals and hence the accuracy of GNSS precise positioning. This work demonstrates that data from the Swarm satellite's flyby height can be used as a proxy for ground-based scintillation data. We compare two datasets from Swarm satellites (with 1-second resolution) and from groundbased scintillation receivers (with 1-minute resolution). To consider the measured parameters for the same area, we find time intervals when the Swarm satellites pass over the field of view of the ground-based Global Positioning System (GPS) receiver. A geometry with an elevation angle of 30° above the receiver was used to calculate these passes. We also performed an azimuthal selection of the GNSS data according to Swarm satellite fly. We used only those GPS satellites that flew near the position of the Swarm satellite in azimuth sector ±10°. We provide validations of the IPIR product against the ground-based measurements, focusing on GPS TEC and scintillation data in low and high-latitudes regions in different longitudinal sectors. We calculate median, mean, maximum and standard deviation values for parameters for both dataset for each conjunction point (for each GPS satellite and Swarm). We observe a weak trend of stronger scintillations with an increasing IPIR index, where the IPIR index presents a product of amplitudes and temporal variations in plasma densities.

• 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.
• Miloch, Wojciech Jacek; Kotova, Daria & Jin, Yaqi (2022). Ionospheric plasma structuring over Antarctica based on satellite and ground observations .
• Miloch, Wojciech Jacek; Kotova, Daria; Lybekk, Bjørn & Trondsen, Espen (2022). Space weather studies at the Troll Ionospheric Observatory in Dronning Maud Land, Antarctica .
• 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.
• 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.
• Enengl, Florine; Kotova, Daria; Jin, Yaqi; Clausen, Lasse & Miloch, Wojciech Jacek (2022). Ionospheric plasma irregularities in relation to dynamic auroral forms.
• Kotova, Daria; Jin, Yaqi; Brask, Steffen Mattias; Spogli, Luca; Wood, Alan G. & Miloch, Wojciech Jacek (2022). Comparison of electron density fluctuations measured by Swarm satellites with the ground-based scintillation data.
• 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 .
• Miloch, Wojciech Jacek (2022). Ionosfæreobservatoriet.
• Miloch, Wojciech Jacek (2022). The future of ionospheric research in Antarctica.
• Kotova, Daria; Jin, Yaqi & Miloch, Wojciech Jacek (2022). Erratum: Interhemispheric variability of the electron density and derived parameters by the Swarm satellites during different solar activity (J. Space Weather Space Clim. (2022) 12 (12) DOI: 10.1051/swsc/2022007). Journal of Space Weather and Space Climate. ISSN 2115-7251. 12. doi: 10.1051/swsc/2022013.
• 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.
• Enengl, Florine; Kotova, Daria & Miloch, Wojciech Jacek (2021). On the Contribution of Particle Precipitation to Ionospheric Plasma Structuring. Vis sammendrag

  Auroral particle precipitation potentially plays a main role in ionospheric plasma structuring. The impact of particle precipitation on plasma structuring are investigated using multi point measurements from scintillation receivers and all sky cameras from Longyearbyen, Ny Ålesund and for the first time from Hornsund on Svalbard. This provides us with the unique possibility of studying the auroral dynamics in a spatial and temporal evolution. Here we consider several case studies to investigate which auroral forms have strongest impact on transionospheric radio waves. We demonstrate that plasma structuring impacting the GNSS signals are largest at the edges of auroral arcs in the direction of their propagation. High energetic particle precipitation, reaching altitudes down to 150 km may be a driver for phase scintillations through structuring. High values of phase scintillation indices can be observed even shortly after strong visible aurora and can then remain significant at low intensities of the aurora.

• 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 .
• 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. Vis sammendrag

  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.

• Adhikari, Sayan; Mukherjee, Rupak; Marholm, Sigvald & Miloch, Wojciech Jacek (2021). Development of a Deep Neural Network Model for Spacecraft Charging. Vis sammendrag

  A Deep Neural Network (DNN) model using the kinetic Particle-in-Cell (PIC) simulation data for spacecraft charging has been developed. The model will be able to predict the potential structure around the spacecraft based on the system parameters of any given system with certain accuracy. DNN provides an excellent tool where we could leverage deep learning for all machine learning tasks and expect better performance with surplus data availability. The usability of DNN is unlimited if a user can train such a model with physics-based parameters. In recent studies, it has shown promising outcomes in terms of accurate prediction of physical quantities[1-2]. In the present work, we used Tensorflow[3], a deep learning library, to classify the PIC simulation datasets. Using Tensorflow, we have compared the effects of multiple activation functions on classification results and developed a library for a case study. This work shows that integrating DNN into traditional computational methods might be the new beginning of developing next-generation modeling.

• 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.
• Miloch, Wojciech Jacek (2021). Ground based and in-situ studies of the polar ionosphere.
• 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.
• Miloch, Wojciech Jacek (2021). Towards understanding and modeling of plasma density irregularities in the polar ionosphere.
• Miloch, Wojciech Jacek (2021). Zorze polarne (nordlys).
• Spicher, Andres; Moen, Jøran Idar; Rowland, Douglas E.; LaBelle, James William; Kletzing, Craig A. & Blix, Kolbjørn [Vis alle 7 forfattere av denne artikkelen] (2021). Sounding rocket studies above Svalbard: the grand challenge initiative cusp.
• Kotova, Daria & Miloch, Wojciech Jacek (2021). Study of the GNSS phase scintillation associated with auroral activity over Queen Maud Land, Antarctica. Vis sammendrag

  This study uses the dataset from the all-sky camera and the ground-based TEC and scintillation receiver installed in Antarctica at the Norwegian Research Station Troll. The station is located just on the equatorward edge of the quiet auroral oval. Thus, the observatory is in an optimal location to study the ionospheric response to geomagnetic disturbances. The all-sky camera was calibrated. In addition, we use geomagnetic indices and information about the solar wind from NASA's OMNIWeb Service, in-situ data onboard low Earth orbiting satellites (Defense Meteorological Satellite Program (DMSP), Swarm mission), and the Super Dual Auroral Radar Network (SuperDARN). Together with the ground-based GNSS scintillation receiver, a comprehensive analysis of the reasons for observing scintillations over the Troll station during the period of geomagnetic disturbances was carried out. The relationship between the activation of aurora and severe phase scintillations is shown.

• Kotova, Daria; Jin, Yaqi & Miloch, Wojciech Jacek (2021). Investigation of interhemispheric variability of ionospheric parameters by the Swarm satellites for different solar activity. Vis sammendrag

  The use of satellite data allows us to study the variability of ionospheric plasma parameters globally without references to ground stations or receivers in different regions of the Earth. The Swarm mission, which was launched in 2014 and is still operational, allows us to investigate the effects of decreasing solar activity on the ionospheric variability. In our study, we use the Swarm in-situ measurements of the electron density and derived parameters. This dataset provides characteristics of the plasma variability along the orbit and gives information on plasma density structures in the ionosphere in terms of their amplitudes, gradients and spatial scales. In this study, we focused on the investigation of variability of these parameters in northern and southern hemispheres. Understanding of the distribution of such parameters in the context of the solar activity level and selected ionospheric regions can have implications for the development of new satellite instruments and for the accuracy of GNSS precise positioning.

• Miloch, Wojciech Jacek (2020). Ionospheric studies and plans for an observing network at Troll Research Station in Antarctica .
• 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.
• 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).
• 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.
• 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 .
• 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 .
• Miloch, Wojciech Jacek (2020). Lower ionosphere - thermosphere and space weather activities at the University of Oslo, Norway.
• Miloch, Wojciech Jacek (2020). Characterising ionospheric plasma irregularities with ground-based observations, rockets and satellites .
• Miloch, Wojciech Jacek (2020). Ground based and in-situ studies of the polar ionosphere.
• Bergeot, N; Alfonsi, L.; Cilliers, P; De Franceschi, G; Correia, E & Enell, C.-F. [Vis alle 24 forfattere av denne artikkelen] (2020). Polar atmosphere and Geospace: Present knowledge, infrastructures and future research directions. SCAR White Paper, Scientific Committee on Antarctic Research.

Se alle arbeider i Cristin