Atmospheric escape from the Earth during geomagnetic reversal

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Published: 2020-05-26
DOI: https://doi.org/10.4401/ag-8354
Keywords:
atmospheric ion escape, geomagnetic reversal, axisymmetric quadrupole

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Olga O. Tsareva
Space Research Institute, Russian Academy of Sciences, ul. Profsoyuznaya 83/32, 117997 Moscow, Russian Federation
https://orcid.org/0000-0003-4835-3908
Eduard M. Dubinin
MPI fur Sonnensystemforschung, Katlenburg-Lindau, Germany
Helmi V. Malova
Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics, Leninskie gory 1, str. 2, 119991 Moscow, Russian Federation; Space Research Institute, Russian Academy of Sciences, ul. Profsoyuznaya 83/32, 117997 Moscow, Russian Federation
Victor Yu. Popov
National Research University "Higher School of Economics", ul. Myasnitskaya 20, 101000 Moscow, Russian Federation; Space Research Institute, Russian Academy of Sciences, ul. Profsoyuznaya 83/32, 117997 Moscow, Russian Federation
Lev M. Zelenyi
Space Research Institute, Russian Academy of Sciences, ul. Profsoyuznaya 83/32, 117997 Moscow, Russian Federation; Moscow Institute of Physics and Technology (State University), Institutskii per. 9, 141700 Dolgoprudnyi, Moscow region Russian Federation

Abstract

We considered basic mechanisms of atmospheric particle acceleration and estimated the escape rates of ionospheric ions (H+ and O+) during the geomagnetic field reversal. It is assumed that during the reversal the Earth's magnetic field deviates from the current dipole configuration, and the quadrupole component dominates. The standoff distance of the quadrupole magnetosphere is about of 3 Earth's radii and therefore a magnetic shielding protects the atmosphere from sputtering and ion pickup but not from the polar and auroral winds.

Article Details

Issue

Vol. 63 No. 2 (2020)

Section

Atmospheric Sciences

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How to Cite

(1)
Tsareva, O. O.; Dubinin, E. M.; Malova, H. V.; Popov, V. Y.; Zelenyi, L. M. Atmospheric Escape from the Earth During Geomagnetic Reversal. Ann. Geophys. 2020, 63 (2), PA223. https://doi.org/10.4401/ag-8354.