Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL095561 |
Machine Learning Prediction of Storm-time High-latitude Ionospheric Irregularities from GNSS-derived ROTI Maps | |
Lei Liu; Y. Jade Morton; Yunxiang Liu | |
2021-10-10 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | This paper presents an image-based convolutional long short-term memory (convLSTM) machine learning algorithm to predict storm-time ionospheric irregularities. Unlike existing methods that are either focused on irregularities at individual locations or treat the irregularity prediction as a classification problem, the convLSTM-based architecture forecasts an entire regions’ ionospheric irregularity occurrence and intensity values. We implemented the convLSTM-based model with a custom-designed loss function (convLSTM-Lc) that includes a dynamic penalty on the difference between the truth and the predicted rate of total electron content index (ROTI) maps. The convLSTM-Lc is trained with real ROTI data collected during January 1-August 7, 2015 from ∼550 GNSS receivers located in (45o-90o N, 0o-180o W). Test results show that the convLSTM-Lc algorithm can forecast irregularity structures more accurately than a convLSTM model that implements conventional loss functions. The model also outperforms the convLSTM-L1, convLSTM-L2 and persistence models according to statistical classification metrics with a lead time of up to 60 minutes. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/339791 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Lei Liu,Y. Jade Morton,Yunxiang Liu. Machine Learning Prediction of Storm-time High-latitude Ionospheric Irregularities from GNSS-derived ROTI Maps[J]. Geophysical Research Letters,2021. |
APA | Lei Liu,Y. Jade Morton,&Yunxiang Liu.(2021).Machine Learning Prediction of Storm-time High-latitude Ionospheric Irregularities from GNSS-derived ROTI Maps.Geophysical Research Letters. |
MLA | Lei Liu,et al."Machine Learning Prediction of Storm-time High-latitude Ionospheric Irregularities from GNSS-derived ROTI Maps".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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