Articles | Volume 41, issue 1
https://doi.org/10.5194/angeo-41-69-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-41-69-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Regular paper
| 
24 Jan 2023
Regular paper |
| 24 Jan 2023
Machine learning detection of dust impact signals observed by the Solar Orbiter
Department of Physics and Technology, UiT The Arctic University of Norway, 9037 Tromsø, Norway
Kristoffer Wickstrøm
Department of Physics and Technology, UiT The Arctic University of Norway, 9037 Tromsø, Norway
Samuel Kociscak
Department of Physics and Technology, UiT The Arctic University of Norway, 9037 Tromsø, Norway
Jakub Vaverka
Department of Surface and Plasma Science, Charles University Prague, 18000 Prague, Czech Republic
Libor Nouzak
Department of Surface and Plasma Science, Charles University Prague, 18000 Prague, Czech Republic
Arnaud Zaslavsky
LESIA – Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris,
5 place Jules Janssen, 92195 Meudon, France
Kristina Rackovic Babic
LESIA – Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris,
5 place Jules Janssen, 92195 Meudon, France
Department of Astronomy, Faculty of Mathematics, University of
Belgrade, Studentski trg 16, 11000 Belgrade, Serbia
Amalie Gjelsvik
Department of Physics and Technology, UiT The Arctic University of Norway, 9037 Tromsø, Norway
David Pisa
Department of Space Physics, Institute of Atmospheric Physics, Czech Academy of Sciences, Bocni II/1401, 14100 Prague, Czech Republic
Jan Soucek
Department of Space Physics, Institute of Atmospheric Physics, Czech Academy of Sciences, Bocni II/1401, 14100 Prague, Czech Republic
Ingrid Mann
Department of Physics and Technology, UiT The Arctic University of Norway, 9037 Tromsø, Norway
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Derek McKay and Andreas Kvammen
Geosci. Instrum. Method. Data Syst., 9, 267–273, https://doi.org/10.5194/gi-9-267-2020, https://doi.org/10.5194/gi-9-267-2020, 2020
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Researchers are making increasing use of machine learning to improve accuracy, efficiency and consistency. During such a study of the aurora, it was noted that biases or distortions had crept into the data because of the conditions (or ergonomics) of the human trainers. As using machine-learning techniques in auroral research is relatively new, it is critical that such biases are brought to the attention of the academic and citizen science communities.
Tinna Lif Gunnarsdottir, Ingrid Mann, Wuhu Feng, Devin R. Huyghebaert, Ingemar Haeggstroem, Yasunobu Ogawa, Norihito Saito, Satonori Nozawa, and Takuya D. Kawahara
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2023-29, https://doi.org/10.5194/angeo-2023-29, 2023
Preprint under review for ANGEO
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Several tons of meteoric particles burn up in our atmosphere each day. This deposits a great deal of material that bids with other atmospheric particles and forms so-called Meteoric Smoke Particles. These particles are assumed to influence radar measurements. Here we have compared radar measurements with simulations of a radar spectrum with and without dust particles and found that dust influences the radar spectrum in the altitude range of 75–85 km.
Samuel Kočiščák, Ingrid Mann, Nicole Meyer-Vernet, Audun Theodorsen, Jakub Vaverka, and Arnaud Zaslavsky
EGUsphere, https://doi.org/10.5194/egusphere-2023-2067, https://doi.org/10.5194/egusphere-2023-2067, 2023
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In-situ observations are crucial for understanding the interplanetary dust, yet not every spacecraft has a dedicated dust detector. Dust encounters happen at great speeds, leading to high energy density at impact, leading to ionization and charge release, which is detected with electrical antennas. Our work focused on understanding how the transient charge plume interacts with Solar Orbiter spacecraft. Our findings are relevant for design of future experiments and understanding of present data.
Dorota Jozwicki, Puneet Sharma, Devin Huyghebaert, and Ingrid Mann
EGUsphere, https://doi.org/10.5194/egusphere-2023-977, https://doi.org/10.5194/egusphere-2023-977, 2023
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We investigated the relationship between PMSE layers and the solar cycle. Our results indicate that PMSE altitude, echo power, and layer thickness are on average higher during solar maximum than solar minimum. Higher electron densities at ionospheric altitudes might be necessary to observe multi-layered PMSE. We observed that the thickness decreases as the number of multi-layers increase. We hypothesized that the thickness of PMSE layers may be related to the vertical wavelength of gravity waves
Florian Günzkofer, Dimitry Pokhotelov, Gunter Stober, Ingrid Mann, Sharon L. Vadas, Erich Becker, Anders Tjulin, Alexander Kozlovsky, Masaki Tsutsumi, Njål Gulbrandsen, Satonori Nozawa, Mark Lester, Evgenia Belova, Johan Kero, Nicholas J. Mitchell, and Claudia Borries
EGUsphere, https://doi.org/10.5194/egusphere-2023-678, https://doi.org/10.5194/egusphere-2023-678, 2023
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Gravity waves (GWs) are waves in Earth's atmosphere and can for example cause cloud ripples. Under certain conditions, these waves can propagate up into the ionosphere. Here, they can cause ripples in the ionosphere plasma, observable as oscillations of the plasma density. Therefore, GWs contribute to ionospheric variability, making them relevant for space weather prediction. Additionally, the behavior of these waves allows us to draw conclusions about the atmosphere at these altitudes.
Tinna L. Gunnarsdottir, Arne Poggenpohl, Ingrid Mann, Alireza Mahmoudian, Peter Dalin, Ingemar Haeggstroem, and Michael Rietveld
Ann. Geophys., 41, 93–114, https://doi.org/10.5194/angeo-41-93-2023, https://doi.org/10.5194/angeo-41-93-2023, 2023
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Temperatures at 85 km around Earth's poles in summer can be so cold that small ice particles form. These can become charged, and, combined with turbulence at these altitudes, they can influence the many electrons present. This can cause large radar echoes called polar mesospheric summer echoes. We use radio waves to heat these echoes on and off when the sun is close to or below the horizon. This allows us to gain some insight into these ice particles and how the sun influences the echoes.
Georg Fischer, Ulrich Taubenschuss, and David Píša
Ann. Geophys., 40, 485–501, https://doi.org/10.5194/angeo-40-485-2022, https://doi.org/10.5194/angeo-40-485-2022, 2022
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The polar light in its various colors and forms has fascinated human beings since ancient times. It is less well known that there are also radio emissions generated in the aurora at higher altitudes. Not just Earth, but some other planets of the solar system also have auroras and corresponding radio emissions. In our publication, we investigate and classify the spectral fine structures of a radio emission called Saturn kilometric radiation to find out more about this radiation process.
Kyoko K. Tanaka, Ingrid Mann, and Yuki Kimura
Atmos. Chem. Phys., 22, 5639–5650, https://doi.org/10.5194/acp-22-5639-2022, https://doi.org/10.5194/acp-22-5639-2022, 2022
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We have investigated the nucleation process of noctilucent clouds observed in the mesosphere using a theoretical approach, where we adopt a more accurate model called the semi-phenomenological model for the nucleation process. We obtained an important result that rejects one of the two dominant nucleation mechanisms that have been proposed. Our results show it is extremely difficult for homogeneous nucleation of water to occur in the mesosphere, while heterogeneous nucleation occurs effectively.
Margaretha Myrvang, Carsten Baumann, and Ingrid Mann
Ann. Geophys., 39, 1055–1068, https://doi.org/10.5194/angeo-39-1055-2021, https://doi.org/10.5194/angeo-39-1055-2021, 2021
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Our model calculations indicate that meteoric smoke particles (MSPs) influence both the magnitude and shape of the electron temperature during artificial heating. Others have found that current theoretical models most likely overestimate heating in the D-region compared to observations. In a future study, we will compare our results to observations of the electron temperature during heating to investigate if the presence of MSPs can explain the discrepancy between model and observations.
Tarjei Antonsen, Ingrid Mann, Jakub Vaverka, Libor Nouzak, and Åshild Fredriksen
Ann. Geophys., 39, 533–548, https://doi.org/10.5194/angeo-39-533-2021, https://doi.org/10.5194/angeo-39-533-2021, 2021
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This paper discusses the charge generation for impacts of nano- to micro-scale dust on metal surfaces at speeds below a few kilometres per second. By introducing a model of capacitive coupling between the dust and the impact surface, we find that at such low speeds, the charge can be dominated by contact charging as opposed to plasma generation.
Joshua Baptiste, Connor Williamson, John Fox, Anthony J. Stace, Muhammad Hassan, Stefanie Braun, Benjamin Stamm, Ingrid Mann, and Elena Besley
Atmos. Chem. Phys., 21, 8735–8745, https://doi.org/10.5194/acp-21-8735-2021, https://doi.org/10.5194/acp-21-8735-2021, 2021
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Agglomeration of ice and dust particles in the mesosphere are studied, using classical electrostatic approaches which are extended to capture the induced polarisation of surface charge. The instances of strong attraction between particles of the same sign of charge are predicted, which take place at small separation distances and also lead to the formation of stable aggregates.
Viswanathan Lakshmi Narayanan, Satonori Nozawa, Shin-Ichiro Oyama, Ingrid Mann, Kazuo Shiokawa, Yuichi Otsuka, Norihito Saito, Satoshi Wada, Takuya D. Kawahara, and Toru Takahashi
Atmos. Chem. Phys., 21, 2343–2361, https://doi.org/10.5194/acp-21-2343-2021, https://doi.org/10.5194/acp-21-2343-2021, 2021
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In the past, additional sodium peaks occurring above the main sodium layer of the upper mesosphere were discussed. Here, formation of an additional sodium peak below the main sodium layer peak is discussed in detail. The event coincided with passage of multiple mesospheric bores, which are step-like disturbances occurring in the upper mesosphere. Hence, this work highlights the importance of such mesospheric bores in causing significant changes to the minor species concentration in a short time.
Carsten Baumann, Margaretha Myrvang, and Ingrid Mann
Ann. Geophys., 38, 919–930, https://doi.org/10.5194/angeo-38-919-2020, https://doi.org/10.5194/angeo-38-919-2020, 2020
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Dust grains exist throughout our solar system. This dust is subject to destruction processes like sublimation and sputtering. Sputtering is the erosion of dust through the impact solar wind and can be very effective near the Sun. We performed calculations to find out how important the sputtering process is compared to the sublimation of dust. Recently launched spacecraft will probe the proximity of the Sun and measure the dust population. Our work will help to understand these measurements.
Henriette Trollvik, Ingrid Mann, Sveinung Olsen, and Yngve Eilertsen
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2020-278, https://doi.org/10.5194/amt-2020-278, 2020
Preprint withdrawn
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We discuss the design of a rocket instrument to collect mesospheric dust consisting of ice with embedded non-volatile meteoric smoke particles. The instrument consists of a collection device and an attached conic funnel. We consider the dust trajectories in the airflow and fragmentation at the funnel. For summer atmospheric conditions at 85 km and assuming that the ice components vaporize we estimate that up to 1014 to 1015 amu of non-volatile dust material can be collected.
Derek McKay and Andreas Kvammen
Geosci. Instrum. Method. Data Syst., 9, 267–273, https://doi.org/10.5194/gi-9-267-2020, https://doi.org/10.5194/gi-9-267-2020, 2020
Short summary
Short summary
Researchers are making increasing use of machine learning to improve accuracy, efficiency and consistency. During such a study of the aurora, it was noted that biases or distortions had crept into the data because of the conditions (or ergonomics) of the human trainers. As using machine-learning techniques in auroral research is relatively new, it is critical that such biases are brought to the attention of the academic and citizen science communities.
Ingrid Mann, Libor Nouzák, Jakub Vaverka, Tarjei Antonsen, Åshild Fredriksen, Karine Issautier, David Malaspina, Nicole Meyer-Vernet, Jiří Pavlů, Zoltan Sternovsky, Joan Stude, Shengyi Ye, and Arnaud Zaslavsky
Ann. Geophys., 37, 1121–1140, https://doi.org/10.5194/angeo-37-1121-2019, https://doi.org/10.5194/angeo-37-1121-2019, 2019
Short summary
Short summary
This work presents a review of dust measurements from spacecraft Cassini, STEREO, MMS, Cluster, Maven and WIND. We also consider the details of dust impacts and charge generation, and how different antenna signals can be generated. We compare observational data to laboratory experiments and simulations and discuss the consequences for dust observation with the new NASA Parker Solar Probe and ESA Solar Orbiter spacecraft.
Matti M. Ala-Lahti, Emilia K. J. Kilpua, Andrew P. Dimmock, Adnane Osmane, Tuija Pulkkinen, and Jan Souček
Ann. Geophys., 36, 793–808, https://doi.org/10.5194/angeo-36-793-2018, https://doi.org/10.5194/angeo-36-793-2018, 2018
Short summary
Short summary
We present a comprehensive statistical analysis of mirror mode waves and the properties of their plasma surroundings in sheath regions driven by interplanetary coronal mass ejection (ICME) to deepen our understanding of these geo-effective plasma environments. The results imply that mirror modes are common structures in ICME sheaths and occur almost exclusively as dip-like structures and in mirror stable stable plasma.
H. Gunell, L. Andersson, J. De Keyser, and I. Mann
Ann. Geophys., 33, 1331–1342, https://doi.org/10.5194/angeo-33-1331-2015, https://doi.org/10.5194/angeo-33-1331-2015, 2015
Short summary
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In a simulation study of the downward current region of the aurora, i.e. where electrons are accelerated upward, double layers are seen to form at low altitude and move upward until they are disrupted at altitudes of ten thousand kilometres or thereabouts. When one double layer is disrupted a new one forms below, and the process repeats itself. The repeated demise and reformation allows ions to flow upward without passing through the double layers that otherwise would have kept them down.
H. Gunell, L. Andersson, J. De Keyser, and I. Mann
Ann. Geophys., 33, 279–293, https://doi.org/10.5194/angeo-33-279-2015, https://doi.org/10.5194/angeo-33-279-2015, 2015
Short summary
Short summary
In this paper, we simulate the plasma on a magnetic field line above the aurora. Initially, about half of the acceleration voltage is concentrated in a thin double layer at a few thousand km altitude. When the voltage is lowered, electrons trapped between the double layer and the magnetic mirror are released. In the process we see formation of electron beams and phase space holes. A temporary reversal of the polarity of the double layer is also seen as well as hysteresis effects in its position.
A. P. Walsh, S. Haaland, C. Forsyth, A. M. Keesee, J. Kissinger, K. Li, A. Runov, J. Soucek, B. M. Walsh, S. Wing, and M. G. G. T. Taylor
Ann. Geophys., 32, 705–737, https://doi.org/10.5194/angeo-32-705-2014, https://doi.org/10.5194/angeo-32-705-2014, 2014
H. Gunell, J. De Keyser, E. Gamby, and I. Mann
Ann. Geophys., 31, 1227–1240, https://doi.org/10.5194/angeo-31-1227-2013, https://doi.org/10.5194/angeo-31-1227-2013, 2013
C. P. Escoubet, J. Berchem, K. J. Trattner, F. Pitout, R. Richard, M. G. G. T. Taylor, J. Soucek, B. Grison, H. Laakso, A. Masson, M. Dunlop, I. Dandouras, H. Reme, A. Fazakerley, and P. Daly
Ann. Geophys., 31, 713–723, https://doi.org/10.5194/angeo-31-713-2013, https://doi.org/10.5194/angeo-31-713-2013, 2013
I. Mann and M. Hamrin
Ann. Geophys., 31, 39–44, https://doi.org/10.5194/angeo-31-39-2013, https://doi.org/10.5194/angeo-31-39-2013, 2013
Related subject area
Subject: Small bodies (dwarf planets, asteroids, comets) to dust | Keywords: Interplanetary dust
Dust sputtering within the inner heliosphere: a modelling study
Dust observations with antenna measurements and its prospects for observations with Parker Solar Probe and Solar Orbiter
Carsten Baumann, Margaretha Myrvang, and Ingrid Mann
Ann. Geophys., 38, 919–930, https://doi.org/10.5194/angeo-38-919-2020, https://doi.org/10.5194/angeo-38-919-2020, 2020
Short summary
Short summary
Dust grains exist throughout our solar system. This dust is subject to destruction processes like sublimation and sputtering. Sputtering is the erosion of dust through the impact solar wind and can be very effective near the Sun. We performed calculations to find out how important the sputtering process is compared to the sublimation of dust. Recently launched spacecraft will probe the proximity of the Sun and measure the dust population. Our work will help to understand these measurements.
Ingrid Mann, Libor Nouzák, Jakub Vaverka, Tarjei Antonsen, Åshild Fredriksen, Karine Issautier, David Malaspina, Nicole Meyer-Vernet, Jiří Pavlů, Zoltan Sternovsky, Joan Stude, Shengyi Ye, and Arnaud Zaslavsky
Ann. Geophys., 37, 1121–1140, https://doi.org/10.5194/angeo-37-1121-2019, https://doi.org/10.5194/angeo-37-1121-2019, 2019
Short summary
Short summary
This work presents a review of dust measurements from spacecraft Cassini, STEREO, MMS, Cluster, Maven and WIND. We also consider the details of dust impacts and charge generation, and how different antenna signals can be generated. We compare observational data to laboratory experiments and simulations and discuss the consequences for dust observation with the new NASA Parker Solar Probe and ESA Solar Orbiter spacecraft.
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Short summary
Collisional fragmentation of asteroids, comets and meteoroids is the main source of dust in the solar system. The dust distribution is however uncharted and the role of dust in the solar system is largely unknown. At present, the interplanetary medium is explored by the Solar Orbiter spacecraft. We present a novel method, based on artificial intelligence, that can be used for detecting dust impacts in Solar Orbiter observations with high accuracy, advancing the study of dust in the solar system.
Collisional fragmentation of asteroids, comets and meteoroids is the main source of dust in the...
