A Deep Learning Approach for Automatic Ionogram Parameters Recognition With Convolutional Neural Networks

Autor: Ruslan Sherstyukov, Samson Moges, Alexander Kozlovsky, Thomas Ulich

Publikováno v: Earth and Space Science, Vol 11, Iss 10, Pp n/a-n/a (2024)

Abstract Typical ionosondes operate with >5 min time intervals, which is enough to obtain regular parameters of the ionosphere, but insufficient to observe short‐term processes in the Earth's ionosphere. The key point for this study is to increase

Externí odkaz: https://doaj.org/article/01473c43816a42168a83c11ac9cecda8

Multi-instrument observations of the Pajala fireball: Origin, characteristics, and atmospheric implications

Autor: Juha Vierinen, Torstein Aslaksen, Jorge Luis Chau, Maria Gritsevich, Björn Gustavsson, Daniel Kastinen, Johan Kero, Alexandre Kozlovsky, Tormod Kværna, Steinar Midtskogen, Sven Peter Näsholm, Thomas Ulich, Ketil Vegum, Mark Lester

Publikováno v: Frontiers in Astronomy and Space Sciences, Vol 9 (2022)

Meteor observations provide information about Solar System constituents and their influx onto Earth, their interaction processes in the atmosphere, as well as the neutral dynamics of the upper atmosphere. This study presents optical, radar, and infra

Externí odkaz: https://doaj.org/article/97110bf5de8a4b739e3c3f5e4cc644e2

A discourse on the temperature measurement problem using meteor wind radar

Autor: Emranul Sarkar, Thomas Ulich

Sodankylä's high latitude location serves an ideal ground for testing more comprehensive physics theory related to radio meteor data. The atmospheric scale height shows significant variation at this latitude. Also, the observational geometry towards

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ddc648de6f010af398b21c06195df61e
https://doi.org/10.5194/egusphere-egu23-17435

Plasma-neutral gas interactions in various space environments: Assessment beyond simplified approximations as a Voyage 2050 theme

Autor: Masatoshi Yamauchi, Johan De Keyser, George Parks, Shin-ichiro Oyama, Peter Wurz, Takumi Abe, Arnaud Beth, Ioannis A. Daglis, Iannis Dandouras, Malcolm Dunlop, Pierre Henri, Nickolay Ivchenko, Esa Kallio, Harald Kucharek, Yong C.-M. Liu, Ingrid Mann, Octav Marghitu, Georgios Nicolaou, Zhaojin Rong, Takeshi Sakanoi, Joachim Saur, Manabu Shimoyama, Satoshi Taguchi, Feng Tian, Takuo Tsuda, Bruce Tsurutani, Drew Turner, Thomas Ulich, Andrew Yau, Ichiro Yoshikawa

Publikováno v: Yamauchi, Masatoshi; De Keyser, Johan; Parks, George; Oyama, Shin-ichiro; Wurz, Peter; Abe, Takumi; Beth, Arnaud; Daglis, Ioannis A.; Dandouras, Iannis; Dunlop, Malcolm; Henri, Pierre; Ivchenko, Nickolay; Kallio, Esa; Kucharek, Harald; Liu, Yong C.-M.; Mann, Ingrid; Marghitu, Octav; Nicolaou, Georgios; Rong, Zhaojin; Sakanoi, Takeshi; ... (2022). Plasma-neutral gas interactions in various space environments: Assessment beyond simplified approximations as a Voyage 2050 theme. Experimental astronomy, 54(2-3), pp. 521-559. Springer 10.1007/s10686-022-09846-9
Experimental Astronomy
Experimental Astronomy, 2022, ⟨10.1007/s10686-022-09846-9⟩

In the White Paper, submitted in response to the European Space Agency (ESA) Voyage 2050 Call, we present the importance of advancing our knowledge of plasma-neutral gas interactions, and of deepening our understanding of the partially ionized enviro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c178d5672525c462756e081fd7b3d69
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-193824

Solving the long-standing problem of estimating the atmospheric temperature at 90 km altitude with meteor radar

Autor: Bernd Kaifler, Alexander Kozlovsky, Mark Lester, Thomas Ulich, Ilkka Virtanen, Emranul Sarkar

For two decades meteor radars have been routinely used to monitor atmospheric temperatures around the 90 km altitude. A common method, based on a temperature-gradient model, is to use the height dependence of meteor decay time to obtain a height-aver

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f34b9e11018920ea17c1e3043b39daa
https://doi.org/10.5194/egusphere-egu21-14760