Dayside Transient Phenomena and Their Impact on the Magnetosphere and Ionosphere

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Journal Title
Journal ISSN
Volume Title
A2 Katsausartikkeli tieteellisessä aikakauslehdessä
Date
2022-08
Major/Subject
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Degree programme
Language
en
Pages
Series
Space Science Reviews, Volume 218, issue 5
Abstract
Dayside transients, such as hot flow anomalies, foreshock bubbles, magnetosheath jets, flux transfer events, and surface waves, are frequently observed upstream from the bow shock, in the magnetosheath, and at the magnetopause. They play a significant role in the solar wind-magnetosphere-ionosphere coupling. Foreshock transient phenomena, associated with variations in the solar wind dynamic pressure, deform the magnetopause, and in turn generates field-aligned currents (FACs) connected to the auroral ionosphere. Solar wind dynamic pressure variations and transient phenomena at the dayside magnetopause drive magnetospheric ultra low frequency (ULF) waves, which can play an important role in the dynamics of Earth’s radiation belts. These transient phenomena and their geoeffects have been investigated using coordinated in-situ spacecraft observations, spacecraft-borne imagers, ground-based observations, and numerical simulations. Cluster, THEMIS, Geotail, and MMS multi-mission observations allow us to track the motion and time evolution of transient phenomena at different spatial and temporal scales in detail, whereas ground-based experiments can observe the ionospheric projections of transient magnetopause phenomena such as waves on the magnetopause driven by hot flow anomalies or flux transfer events produced by bursty reconnection across their full longitudinal and latitudinal extent. Magnetohydrodynamics (MHD), hybrid, and particle-in-cell (PIC) simulations are powerful tools to simulate the dayside transient phenomena. This paper provides a comprehensive review of the present understanding of dayside transient phenomena at Earth and other planets, their geoeffects, and outstanding questions.
Description
Funding Information: QGZ acknowledges Major Project of Chinese National Programs for Fundamental Research and Development 2021YFA0718600 and China Space Agency Project D020301. HZ acknowledges NSF AGS-1352669 and NASA grant 80NSSC18K1376. BL thanks the Centre National d’Etudes Spatiales (CNES; grant nos. APR-W-EEXP/10- 01-01-05 and APR-Z-ETP-E-0010/01-01-05) and GENCI Agency (DARI project; grant no. A0050400295) for their support. TZL is supported by the NASA Living With a Star Jack Eddy Postdoctoral Fellowship Program, administered by the Cooperative Programs for the Advancement of Earth System Science (CPAESS) and is partially supported by NSF award AGS-1941012. HKC acknowledges NSF grants, OIA-1920965 and AGS-1928883 and the NASA grants, 80NSSC18K1043, 80NSSC18K1052 and 80NSSC19K0844. Work at GSFC was supported by NASA’s THEMIS, MMS, and SR programs. The work of DH is supported by National Natural Science Foundation of China (42030101). The research of AK and GF has been supported by the Research Centre for Astronomy and Earth Sciences, Eötvös Loránd Research Network. KO is supported by the Research Council of Norway grant 223252. The authors acknowledge the International Space Science Institute-Beijing for supporting the international team “Dayside Transient Phenomena and Their Impact on the Magnetosphere-Ionosphere”. Funding Information: QGZ acknowledges Major Project of Chinese National Programs for Fundamental Research and Development 2021YFA0718600 and China Space Agency Project D020301. HZ acknowledges NSF AGS-1352669 and NASA grant 80NSSC18K1376. BL thanks the Centre National d’Etudes Spatiales (CNES; grant nos. APR-W-EEXP/10- 01-01-05 and APR-Z-ETP-E-0010/01-01-05) and GENCI Agency (DARI project; grant no. A0050400295) for their support. TZL is supported by the NASA Living With a Star Jack Eddy Postdoctoral Fellowship Program, administered by the Cooperative Programs for the Advancement of Earth System Science (CPAESS) and is partially supported by NSF award AGS-1941012. HKC acknowledges NSF grants, OIA-1920965 and AGS-1928883 and the NASA grants, 80NSSC18K1043, 80NSSC18K1052 and 80NSSC19K0844. Work at GSFC was supported by NASA’s THEMIS, MMS, and SR programs. The work of DH is supported by National Natural Science Foundation of China (42030101). The research of AK and GF has been supported by the Research Centre for Astronomy and Earth Sciences, Eötvös Loránd Research Network. KO is supported by the Research Council of Norway grant 223252. The authors acknowledge the International Space Science Institute-Beijing for supporting the international team “Dayside Transient Phenomena and Their Impact on the Magnetosphere-Ionosphere”. Publisher Copyright: © 2022, The Author(s).
Keywords
Bow shock, Flux transfer events, Mirror mode, Surface waves, Transient foreshock phenomena, Ultra-low frequency waves
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Citation
Zhang, H, Zong, Q, Connor, H, Delamere, P, Facskó, G, Han, D, Hasegawa, H, Kallio, E, Kis, Á, Le, G, Lembège, B, Lin, Y, Liu, T, Oksavik, K, Omidi, N, Otto, A, Ren, J, Shi, Q, Sibeck, D & Yao, S 2022, ' Dayside Transient Phenomena and Their Impact on the Magnetosphere and Ionosphere ', Space Science Reviews, vol. 218, no. 5, 40 . https://doi.org/10.1007/s11214-021-00865-0