DOI: 10.1029/2017JA025125
Scopus记录号: 2-s2.0-85050262584
论文题名: CESE-HLL Magnetic Field-Driven Modeling of the Background Solar Wind During Year 2008
作者: Li H. ; Feng X.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 6 起始页码: 4488
结束页码: 4509
语种: 英语
英文关键词: 3-D MHD model
; data-driven modeling
; solar wind background
英文摘要: In this paper, the CESE-HLL three-dimensional magnetohydrodynamic solar wind model is first modified to be able to work in a corona-heliosphere integrated approach and then used to simulate the evolution of solar wind from the solar surface to the Earth's orbit during year 2008. Here high-cadence photospheric magnetic field data are used to drive the model at the solar surface via the projected normal characteristic boundary equations. The simulated results are analyzed and quantitatively evaluated by comparing the simulated results with solar and interplanetary observations. The analyses demonstrate that our model reproduces the main pattern and the evolutionary feature of large-scale coronal structures. The simulated results show that the height of the pseudostreamer X point is positively correlated with the distance of the coronal holes connected by the pseudostreamer. During year 2008, the helmet streamer belt is found to have a net southward displacement from the equator while the pseudostreamer belts are biased to the Northern Hemisphere. Both helmet streamer belt and pseudostreamer belts exhibit a general trend of becoming more concentrated along the equator throughout 2008. The evaluation of the simulated results at the L1 point shows that the general structures can be generated by the model, and that speed is the best among the solar wind parameters reproduced. However, the temperature of the fast solar wind and the magnitude of the interplanetary magnetic field are underestimated. The success rate of prediction and arrival time error are also calculated for magnetic field polarity reversals and stream interaction regions. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113825
Appears in Collections: 气候减缓与适应
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作者单位: SIGMA Weather Group, State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China; College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, China; HIT Institute of Space Science and Applied Technology, Shenzhen, China
Recommended Citation:
Li H.,Feng X.. CESE-HLL Magnetic Field-Driven Modeling of the Background Solar Wind During Year 2008[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(6)