Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031551 |
Detection of Non-Gaussian Behavior Using Machine Learning Techniques: A Case Study on the Lorenz 63 Model | |
Goodliff, Michael; Fletcher, Steven; Kliewer, Anton; Forsythe, John; Jones, Andrew | |
2020-01-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | An important assumption made in most variational, ensemble, and hybrid-based data assimilation systems is that all minimized errors are Gaussian random variables. A theory developed at the Cooperative Institute for Research in the Atmosphere enables for the Gaussian assumption for the different types of errors to be relaxed to a lognormally distributed random variable. While this is a first step toward using more consistent distributions to model the errors involved in numerical weather/ocean prediction, we still need to be able to identify when we need to assign a lognormal distribution in a mixed Gaussian-lognormal approach. In this paper, we present some machine learning techniques and experiments with the Lorenz 63 model. Using these machine learning techniques, we show detection of non-Gaussian distributions can be done using two methods: a support vector machine and a neural network. This is done by training past data to classify (1) differences with the distribution statistics (means and modes) and (2) the skewness of the probability density function. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000521080000012 |
WOS关键词 | NEURAL-NETWORKS ; WEATHER |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/280034 |
专题 | 气候变化 |
作者单位 | Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Goodliff, Michael,Fletcher, Steven,Kliewer, Anton,et al. Detection of Non-Gaussian Behavior Using Machine Learning Techniques: A Case Study on the Lorenz 63 Model[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(2). |
APA | Goodliff, Michael,Fletcher, Steven,Kliewer, Anton,Forsythe, John,&Jones, Andrew.(2020).Detection of Non-Gaussian Behavior Using Machine Learning Techniques: A Case Study on the Lorenz 63 Model.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(2). |
MLA | Goodliff, Michael,et al."Detection of Non-Gaussian Behavior Using Machine Learning Techniques: A Case Study on the Lorenz 63 Model".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.2(2020). |
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