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Solar wind-magnetosphere energy coupling function fitting: Results froma global MHD simulation
Wang, C.; Han, J. P.; Li, H.; Peng, Z.; Richardson, J. D.; Wang, C (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing, Peoples R China.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2014
Volume119Issue:8
ISSN2169-9380
Language英语
AbstractQuantitatively estimating the energy input from the solar wind into the magnetosphere on a global scale is still an observational challenge. We perform three- dimensional magnetohydrodynamic (MHD) simulations to derive the energy coupling function. Based on 240 numerical test runs, the energy coupling function is given by E-in = 3.78 x 10(7)n(sw)(0.24)V(sw)(1.47)B(T)(0.86) [sin(2.70)(theta/2) + 0.25]. We study the correlations between the energy coupling function and a wide variety of magnetospheric activity, such as the indices of Dst, Kp, ap, AE, AU, AL, the polar cap index, and the hemispheric auroral power. The results indicate that this energy coupling function gives better correlations than the epsilon function. This result is also applied to a storm event under northward interplanetary magnetic field conditions. About 13% of the solar wind kinetic energy is transferred into the magnetosphere and about 35% of the input energy is dissipated in the ionosphere, consistent with previous studies.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4481
Collection空间科学部
Corresponding AuthorWang, C (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Wang, C.,Han, J. P.,Li, H.,et al. Solar wind-magnetosphere energy coupling function fitting: Results froma global MHD simulation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2014,119(8).
APA Wang, C.,Han, J. P.,Li, H.,Peng, Z.,Richardson, J. D.,&Wang, C .(2014).Solar wind-magnetosphere energy coupling function fitting: Results froma global MHD simulation.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,119(8).
MLA Wang, C.,et al."Solar wind-magnetosphere energy coupling function fitting: Results froma global MHD simulation".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 119.8(2014).
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