Predicting SuperDARN cross polar cap potential by applying regression analysis and machine learning
Predicting SuperDARN cross polar cap potential by applying regression analysis and machine learning
复制标题
通过应用回归分析和机器学习预测 SuperDARN 跨极上限潜力
DOI:
10.1016/j.jastp.2019.105057
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发表时间:
2019-10
影响因子:
1.9
通讯作者:
Qiao Lei
中科院分区:
文献类型:
--
作者:
Liu Erxiao;Hu Hongqiao;Liu Jianjun;Teng Xuyang;Qiao Lei
The cross polar cap potential (CPCP) is one of the primary parameters characterizing the electrodynamic feature of the high latitude ionosphere convection. In this study, we perform a comprehensive investigation of the Super Dual Auroral Radar Network (SuperDARN) CPCP, based on a large database of measurements from 1999 to 2009, and its relationship with various parameters of the solar wind, interplanetary magnetic field (IMF) and geomagnetic indices. Specifically, the IMF clock angle, the IMF Bz, the solar wind velocity, the plasma proton density, AE index, SymH index and Dst index are under consideration. According to the results of the correlation, the input parameters are selected and two models of the CPCP based on the multivariate regression analysis and Back Propagation Artificial Neural Network (BP ANN) algorithm are proposed respectively. The regression and BP ANN models are validated and the accuracy as well as the stability of the models is tested by using independent datasets. The result shows that the root mean square error (RMSE) between the measured and the model values ranges from 3.7 to 6.7 kV and the linear correlation coefficients are close to, or above 0.7. The ANN model is shown to have a better performance than the regression model.
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