Journal cover Journal topic
Annales Geophysicae An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 1.490
IF1.490
IF 5-year value: 1.445
IF 5-year
1.445
CiteScore value: 2.9
CiteScore
2.9
SNIP value: 0.789
SNIP0.789
IPP value: 1.48
IPP1.48
SJR value: 0.74
SJR0.74
Scimago H <br class='widget-line-break'>index value: 88
Scimago H
index
88
h5-index value: 21
h5-index21
Download
Short summary
It has been supposed so far that the earth ionosphere is a passive load in changing weather in space (space weather) during the course of energy transfer from the Sun to the Earth. In this report, we present a new idea that ionosphere is not merely a load in the Sun-Earth system but takes the initiative in space weather.
Preprints
https://doi.org/10.5194/angeo-2020-92
https://doi.org/10.5194/angeo-2020-92

  04 Jan 2021

04 Jan 2021

Review status: this preprint is currently under review for the journal ANGEO.

Ionospheric control of space weather

Osuke Saka Osuke Saka
  • Office Geophysik, Ogoori, 838-0141, Japan

Abstract. We propose that ionospheric plasma injections to the magnetosphere (ionospheric injection) represent a new plasma process in the polar ionosphere. The ionospheric injection is first triggered by westward electric fields transmitted from the convection surge in the magnetosphere in association with dipolarization onset. Localized westward electric fields result in local accumulation of ionospheric electrons because of differing electron and ion mobility in the E-layer. This charge imbalance was quickly reduced by polarization electric fields generated in the ionosphere. Meanwhile, ion/electron populations are partially released as injections to the magnetosphere to sustain initial potential distributions in quasi-neutral equilibrium.

Resultant geomagnetic field lines are not in equipotential equilibrium during ionospheric injections but instead develop field-aligned potentials to extract ions/electrons ejected from the ionosphere. Field-aligned potential can exist in the magnetic mirror geometry of auroral field lines if the magnetospheric plasma follows quasi-neutral equilibrium. The parallel potential distribution may be global in scale varying monotonically along the field lines between the ionosphere and the equator. Amplified equatorial projection of ionospheric potentials then develop substorm dipolarization processes in a positive feedback loop. Cold plasmas from the ionosphere are distributed along the dynamical trajectories in the magnetosphere and conserve the total energy (including electrostatic potentials) and first adiabatic invariant. They distribute along a dynamical trajectory either leaving only the energetic part of ionospheric plasmas or not changing velocity space distributions from the ionospheric source.

Osuke Saka

Status: open (until 02 Mar 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Osuke Saka

Osuke Saka

Viewed

Total article views: 180 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
139 37 4 180 2 1
  • HTML: 139
  • PDF: 37
  • XML: 4
  • Total: 180
  • BibTeX: 2
  • EndNote: 1
Views and downloads (calculated since 04 Jan 2021)
Cumulative views and downloads (calculated since 04 Jan 2021)

Viewed (geographical distribution)

Total article views: 157 (including HTML, PDF, and XML) Thereof 154 with geography defined and 3 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 24 Jan 2021
Publications Copernicus
Download
Short summary
It has been supposed so far that the earth ionosphere is a passive load in changing weather in space (space weather) during the course of energy transfer from the Sun to the Earth. In this report, we present a new idea that ionosphere is not merely a load in the Sun-Earth system but takes the initiative in space weather.
Citation