One year in the Earth's magnetosphere: A global MHD simulation and spacecraft measurements

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One year in the Earth's magnetosphere : A global MHD simulation and spacecraft measurements. / Facskó, G.; Honkonen, I.; Živković, T.; Palin, L.; Kallio, E.; Ågren, K.; Opgenoorth, H.; Tanskanen, E. I.; Milan, S.

In: Space Weather, Vol. 14, No. 5, 24.05.2016, p. 351-367.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Facskó, G, Honkonen, I, Živković, T, Palin, L, Kallio, E, Ågren, K, Opgenoorth, H, Tanskanen, EI & Milan, S 2016, 'One year in the Earth's magnetosphere: A global MHD simulation and spacecraft measurements' Space Weather, vol. 14, no. 5, pp. 351-367. https://doi.org/10.1002/2015SW001355

APA

Facskó, G., Honkonen, I., Živković, T., Palin, L., Kallio, E., Ågren, K., ... Milan, S. (2016). One year in the Earth's magnetosphere: A global MHD simulation and spacecraft measurements. Space Weather, 14(5), 351-367. https://doi.org/10.1002/2015SW001355

Vancouver

Author

Facskó, G. ; Honkonen, I. ; Živković, T. ; Palin, L. ; Kallio, E. ; Ågren, K. ; Opgenoorth, H. ; Tanskanen, E. I. ; Milan, S. / One year in the Earth's magnetosphere : A global MHD simulation and spacecraft measurements. In: Space Weather. 2016 ; Vol. 14, No. 5. pp. 351-367.

Bibtex - Download

@article{2db13f1604004fd5a7fee71694c86052,
title = "One year in the Earth's magnetosphere: A global MHD simulation and spacecraft measurements",
abstract = "The response of the Earth's magnetosphere to changing solar wind conditions is studied with a 3-D Magnetohydrodynamic (MHD) model. One full year (155 Cluster orbits) of the Earth's magnetosphere is simulated using Grand Unified Magnetosphere Ionosphere Coupling simulation (GUMICS-4) magnetohydrodynamic code. Real solar wind measurements are given to the code as input to create the longest lasting global magnetohydrodynamics simulation to date. The applicability of the results of the simulation depends critically on the input parameters used in the model. Therefore, the validity and the variance of the OMNIWeb data are first investigated thoroughly using Cluster measurement close to the bow shock. The OMNIWeb and the Cluster data were found to correlate very well before the bow shock. The solar wind magnetic field and plasma parameters are not changed significantly from the L1 Lagrange point to the foreshock; therefore, the OMNIWeb data are appropriate input to the GUMICS-4. The Cluster SC3 footprints are determined by magnetic field mapping from the simulation results and the Tsyganenko (T96) model in order to compare two methods. The determined footprints are in rather good agreement with the T96. However, it was found that the footprints agree better in the Northern Hemisphere than the Southern one during quiet conditions. If the By is not zero, the agreement of the GUMICS-4 and T96 footprint is worse in longitude in the Southern Hemisphere. Overall, the study implies that a 3-D MHD model can increase our insight of the response of the magnetosphere to solar wind conditions.",
keywords = "Cluster, Global MHD simulations, Magnetic field mapping",
author = "G. Facsk{\'o} and I. Honkonen and T. Živković and L. Palin and E. Kallio and K. {\AA}gren and H. Opgenoorth and Tanskanen, {E. I.} and S. Milan",
year = "2016",
month = "5",
day = "24",
doi = "10.1002/2015SW001355",
language = "English",
volume = "14",
pages = "351--367",
journal = "Space Weather",
issn = "1542-7390",
number = "5",

}

RIS - Download

TY - JOUR

T1 - One year in the Earth's magnetosphere

T2 - A global MHD simulation and spacecraft measurements

AU - Facskó, G.

AU - Honkonen, I.

AU - Živković, T.

AU - Palin, L.

AU - Kallio, E.

AU - Ågren, K.

AU - Opgenoorth, H.

AU - Tanskanen, E. I.

AU - Milan, S.

PY - 2016/5/24

Y1 - 2016/5/24

N2 - The response of the Earth's magnetosphere to changing solar wind conditions is studied with a 3-D Magnetohydrodynamic (MHD) model. One full year (155 Cluster orbits) of the Earth's magnetosphere is simulated using Grand Unified Magnetosphere Ionosphere Coupling simulation (GUMICS-4) magnetohydrodynamic code. Real solar wind measurements are given to the code as input to create the longest lasting global magnetohydrodynamics simulation to date. The applicability of the results of the simulation depends critically on the input parameters used in the model. Therefore, the validity and the variance of the OMNIWeb data are first investigated thoroughly using Cluster measurement close to the bow shock. The OMNIWeb and the Cluster data were found to correlate very well before the bow shock. The solar wind magnetic field and plasma parameters are not changed significantly from the L1 Lagrange point to the foreshock; therefore, the OMNIWeb data are appropriate input to the GUMICS-4. The Cluster SC3 footprints are determined by magnetic field mapping from the simulation results and the Tsyganenko (T96) model in order to compare two methods. The determined footprints are in rather good agreement with the T96. However, it was found that the footprints agree better in the Northern Hemisphere than the Southern one during quiet conditions. If the By is not zero, the agreement of the GUMICS-4 and T96 footprint is worse in longitude in the Southern Hemisphere. Overall, the study implies that a 3-D MHD model can increase our insight of the response of the magnetosphere to solar wind conditions.

AB - The response of the Earth's magnetosphere to changing solar wind conditions is studied with a 3-D Magnetohydrodynamic (MHD) model. One full year (155 Cluster orbits) of the Earth's magnetosphere is simulated using Grand Unified Magnetosphere Ionosphere Coupling simulation (GUMICS-4) magnetohydrodynamic code. Real solar wind measurements are given to the code as input to create the longest lasting global magnetohydrodynamics simulation to date. The applicability of the results of the simulation depends critically on the input parameters used in the model. Therefore, the validity and the variance of the OMNIWeb data are first investigated thoroughly using Cluster measurement close to the bow shock. The OMNIWeb and the Cluster data were found to correlate very well before the bow shock. The solar wind magnetic field and plasma parameters are not changed significantly from the L1 Lagrange point to the foreshock; therefore, the OMNIWeb data are appropriate input to the GUMICS-4. The Cluster SC3 footprints are determined by magnetic field mapping from the simulation results and the Tsyganenko (T96) model in order to compare two methods. The determined footprints are in rather good agreement with the T96. However, it was found that the footprints agree better in the Northern Hemisphere than the Southern one during quiet conditions. If the By is not zero, the agreement of the GUMICS-4 and T96 footprint is worse in longitude in the Southern Hemisphere. Overall, the study implies that a 3-D MHD model can increase our insight of the response of the magnetosphere to solar wind conditions.

KW - Cluster

KW - Global MHD simulations

KW - Magnetic field mapping

UR - http://www.scopus.com/inward/record.url?scp=84971324142&partnerID=8YFLogxK

U2 - 10.1002/2015SW001355

DO - 10.1002/2015SW001355

M3 - Article

VL - 14

SP - 351

EP - 367

JO - Space Weather

JF - Space Weather

SN - 1542-7390

IS - 5

ER -

ID: 4683565