An operational solar wind prediction system transitioning fundamental science to operations

	An operational solar wind prediction system transitioning fundamental science to operations
	Wang, Jingjing; Ao, Xianzhi; Wang, Yuming; Wang, Chuanbing; Cai, Yanxia; Luo, Bingxian; Liu, Siqing; Shen, Chenglong; Zhuang, Bin; Xue, Xianghui
刊名	JOURNAL OF SPACE WEATHER AND SPACE CLIMATE
	2018
卷号	8 页码:A39
关键词	Forecasting Solar Wind Coronal Mass Ejection (Cme) Space Weather
ISSN号	2115-7251
英文摘要	We present in this paper an operational solar wind prediction system. The system is an outcome of the collaborative efforts between scientists in research communities and forecasters at Space Environment Prediction Center (SEPC) in China. This system is mainly composed of three modules: (1) a photospheric magnetic field extrapolation module, along with the Wang-Sheeley-Arge (WSA) empirical method, to obtain the background solar wind speed and the magnetic field strength on the source surface; (2) a modified Hakamada-Akasofu-Fry (HAF) kinematic module for simulating the propagation of solar wind structures in the interplanetary space; and (3) a coronal mass ejection (CME) detection module, which derives CME parameters using the ice-cream cone model based on coronagraph images. By bridging the gap between fundamental science and operational requirements, our system is finally capable of predicting solar wind conditions near Earth, especially the arrival times of the co-rotating interaction regions (CIRs) and CMEs. Our test against historical solar wind data from 2007 to 2016 shows that the hit rate (HR) of the high-speed enhancements (HSEs) is 0.60 and the false alarm rate (FAR) is 0.30. The mean error (ME) and the mean absolute error (MAE) of the maximum speed for the same period are -73.9 km s(-1) and 101.2 km s(-1), respectively. Meanwhile, the ME and MAE of the arrival time of the maximum speed are 0.15 days and 1.27 days, respectively. There are 25 CMEs simulated and the MAE of the arrival time is 18.0 h.
语种	英语
资助机构	National Natural Science Foundation of China [41604149, 41474164, 41574165, 41761134088, 41574167, 41774181] ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/6426]
专题	国家空间科学中心_空间环境部
通讯作者	Wang, JJ (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Beijing, Peoples R China.
推荐引用方式 GB/T 7714	Wang, Jingjing,Ao, Xianzhi,Wang, Yuming,et al. An operational solar wind prediction system transitioning fundamental science to operations[J]. JOURNAL OF SPACE WEATHER AND SPACE CLIMATE,2018,8:A39.
APA	Wang, Jingjing.,Ao, Xianzhi.,Wang, Yuming.,Wang, Chuanbing.,Cai, Yanxia.,...&Wang, JJ .(2018).An operational solar wind prediction system transitioning fundamental science to operations.JOURNAL OF SPACE WEATHER AND SPACE CLIMATE,8,A39.
MLA	Wang, Jingjing,et al."An operational solar wind prediction system transitioning fundamental science to operations".JOURNAL OF SPACE WEATHER AND SPACE CLIMATE 8(2018):A39.