The interhemispheric and F region dynamo currents revisited with the Swarm constellation

Hermann Luehr, Guram Kervalishvili, Ingo Michaelis, Jan Rauberg, Patricia Ritter, Jaeheung Park, José M.G. Merayo, Peter Brauer

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Based on magnetic field data sampled by the Swarm satellite constellation it is possible for the first time to determine uniquely F region currents at low latitudes. Initial results are presented from the first 200days of formation flight (17 April to 5 November 2014). Detailed results have been obtained for interhemispheric field-aligned currents connecting the solar quiet day magnetic variation (Sq) current systems in the two hemispheres. We obtain prominent currents from the Southern (winter) Hemisphere to the Northern around noon. Weaker currents in opposite direction are observed during morning and evening hours. Furthermore, we could confirm the existence of vertical currents above the dip equator, downward around noon and upward around sunset. For both current systems we present and discuss longitudinal variations.
Original languageEnglish
JournalGeophysical Research Letters
Volume42
Issue number9
Pages (from-to)3069-3075
ISSN0094-8276
DOIs
Publication statusPublished - 2015

Cite this

Luehr, Hermann ; Kervalishvili, Guram ; Michaelis, Ingo ; Rauberg, Jan ; Ritter, Patricia ; Park, Jaeheung ; Merayo, José M.G. ; Brauer, Peter. / The interhemispheric and F region dynamo currents revisited with the Swarm constellation. In: Geophysical Research Letters. 2015 ; Vol. 42, No. 9. pp. 3069-3075.
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abstract = "Based on magnetic field data sampled by the Swarm satellite constellation it is possible for the first time to determine uniquely F region currents at low latitudes. Initial results are presented from the first 200days of formation flight (17 April to 5 November 2014). Detailed results have been obtained for interhemispheric field-aligned currents connecting the solar quiet day magnetic variation (Sq) current systems in the two hemispheres. We obtain prominent currents from the Southern (winter) Hemisphere to the Northern around noon. Weaker currents in opposite direction are observed during morning and evening hours. Furthermore, we could confirm the existence of vertical currents above the dip equator, downward around noon and upward around sunset. For both current systems we present and discuss longitudinal variations.",
author = "Hermann Luehr and Guram Kervalishvili and Ingo Michaelis and Jan Rauberg and Patricia Ritter and Jaeheung Park and Merayo, {Jos{\'e} M.G.} and Peter Brauer",
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The interhemispheric and F region dynamo currents revisited with the Swarm constellation. / Luehr, Hermann; Kervalishvili, Guram; Michaelis, Ingo; Rauberg, Jan; Ritter, Patricia; Park, Jaeheung; Merayo, José M.G.; Brauer, Peter.

In: Geophysical Research Letters, Vol. 42, No. 9, 2015, p. 3069-3075.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - The interhemispheric and F region dynamo currents revisited with the Swarm constellation

AU - Luehr, Hermann

AU - Kervalishvili, Guram

AU - Michaelis, Ingo

AU - Rauberg, Jan

AU - Ritter, Patricia

AU - Park, Jaeheung

AU - Merayo, José M.G.

AU - Brauer, Peter

PY - 2015

Y1 - 2015

N2 - Based on magnetic field data sampled by the Swarm satellite constellation it is possible for the first time to determine uniquely F region currents at low latitudes. Initial results are presented from the first 200days of formation flight (17 April to 5 November 2014). Detailed results have been obtained for interhemispheric field-aligned currents connecting the solar quiet day magnetic variation (Sq) current systems in the two hemispheres. We obtain prominent currents from the Southern (winter) Hemisphere to the Northern around noon. Weaker currents in opposite direction are observed during morning and evening hours. Furthermore, we could confirm the existence of vertical currents above the dip equator, downward around noon and upward around sunset. For both current systems we present and discuss longitudinal variations.

AB - Based on magnetic field data sampled by the Swarm satellite constellation it is possible for the first time to determine uniquely F region currents at low latitudes. Initial results are presented from the first 200days of formation flight (17 April to 5 November 2014). Detailed results have been obtained for interhemispheric field-aligned currents connecting the solar quiet day magnetic variation (Sq) current systems in the two hemispheres. We obtain prominent currents from the Southern (winter) Hemisphere to the Northern around noon. Weaker currents in opposite direction are observed during morning and evening hours. Furthermore, we could confirm the existence of vertical currents above the dip equator, downward around noon and upward around sunset. For both current systems we present and discuss longitudinal variations.

U2 - 10.1002/2015GL063662

DO - 10.1002/2015GL063662

M3 - Journal article

VL - 42

SP - 3069

EP - 3075

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 9

ER -