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Three-dimensional MHD Simulation of Solar Wind Using a New Boundary Treatment: Comparison with In Situ Data at Earth
Shen, Fang1,2,3; Yang, Zicai1,2; Zhang, Jie; Wei4; Feng, Xueshang1,2,3
Department空间科学部
Source PublicationASTROPHYSICAL JOURNAL
2018
Volume866Issue:1Pages:18
DOI10.3847/1538-4357/aad8O6
ISSN0004-637X
Language英语
Keywordmagnetohydrodynamics (MHD) methods: numerical solar wind Sun: heliosphere
AbstractThree-dimensional magnetohydrodynamics (MHD) numerical simulation is an important tool in the prediction of solar wind parameters. In this study, we improve our corona interplanetary total variation diminishing MHD model by using a new boundary applicable to all phases of solar cycles. This model uses synoptic magnetogram maps from the Global Oscillation Network Group as the input data. The empirical Wang-Sheeley-Arge relation is used to assign solar wind speed at the lower boundary, while temperature is specified accordingly based on its empirical relation with the solar wind speed. Magnetic field intensity and solar wind density at the boundary are obtained from observational data in the immediate past Carrington rotations, permitting the persistence of these two parameters in a short time period. The boundary conditions depend on only five tunable parameters when simulating the solar wind for different phases of the solar cycle. We apply this model to simulate the background solar wind from 2007 to 2017 and compare the modeled results with the observational data in the OMNI database. Visual inspection shows that our model can capture the time patterns of solar wind parameters well at most times. Statistical analysis shows that the simulated solar wind parameters are all in good agreement with the observations. This study demonstrates that the improved interplanetary total variation diminishing model can be used for predicting all solar wind parameters near the Earth.
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/6549
Collection空间科学部
Affiliation1.Chinese Acad Sci, SIGMA Weather Grp, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.HIT Inst Space Sci & Appl Technol, Shenzhen 518055, Peoples R China;
4.George Mason Univ, Dept Phys & Astron, Fairfax, VA 22030 USA
Recommended Citation
GB/T 7714
Shen, Fang,Yang, Zicai,Zhang, Jie,et al. Three-dimensional MHD Simulation of Solar Wind Using a New Boundary Treatment: Comparison with In Situ Data at Earth[J]. ASTROPHYSICAL JOURNAL,2018,866(1):18.
APA Shen, Fang,Yang, Zicai,Zhang, Jie,Wei,&Feng, Xueshang.(2018).Three-dimensional MHD Simulation of Solar Wind Using a New Boundary Treatment: Comparison with In Situ Data at Earth.ASTROPHYSICAL JOURNAL,866(1),18.
MLA Shen, Fang,et al."Three-dimensional MHD Simulation of Solar Wind Using a New Boundary Treatment: Comparison with In Situ Data at Earth".ASTROPHYSICAL JOURNAL 866.1(2018):18.
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