中文
相关论文

相关论文: Neural network prediction of geomagnetic activity:…

200 篇论文

The atmosphere is chaotic. This fundamental property of the climate system makes forecasting weather incredibly challenging: it's impossible to expect weather models to ever provide perfect predictions of the Earth system beyond timescales…

大气与海洋物理 · 物理学 2020-12-15 Elizabeth A. Barnes , Kirsten Mayer , Benjamin Toms , Zane Martin , Emily Gordon

Recently, there has been a surge of research on data-driven weather forecasting systems, especially applications based on convolutional neural networks (CNNs). These are usually trained on atmospheric data represented on regular…

大气与海洋物理 · 物理学 2023-09-18 Sebastian Scher , Gabriele Messori

We study the applicability of GNNs to the problem of wind energy forecasting. We find that certain architectures achieve performance comparable to our best CNN-based benchmark. The study is conducted on three wind power facilities using…

机器学习 · 计算机科学 2025-07-02 Javier Castellano , Ignacio Villanueva

The success of deep learning techniques over the last decades has opened up a new avenue of research for weather forecasting. Here, we take the novel approach of using a neural network to predict full probability density functions at each…

机器学习 · 统计学 2022-01-05 Mariana Clare , Omar Jamil , Cyril Morcrette

Erroneous GNSS positioning, failures in spacecraft operations and power outages due to geomagnetically induced currents are severe threats originating from space weather. Having knowledge of potential impacts on modern society in advance is…

空间物理 · 物理学 2021-06-29 Carsten Baumann , Aoife E. McCloskey

Studies of solar wind turbulence traditionally employ high-resolution magnetic field data, but high-resolution measurements of ion and electron moments have been possible only recently. We report the first turbulence studies of ion and…

We investigate the transition of the solar wind turbulent cascade from MHD to sub-ion range by means of a detail comparison between in situ observations and hybrid numerical simulations. In particular we focus on the properties of the…

空间物理 · 物理学 2020-09-01 L. Matteini , L. Franci , O. Alexandrova , C. Lacombe , S. Landi , P. Hellinger , E. Papini , A. Verdini

The prediction of near surface wind speed is becoming increasingly vital for the operation of electrical energy grids as the capacity of installed wind power grows. The majority of predictive wind speed modeling has focused on point-based…

机器学习 · 计算机科学 2017-12-15 Jianan Cao , David J. Farnham , Upmanu Lall

The sun as an oscillator produces frequencies which propagate in the heliosphere, via solar wind, to the terrestrial magnetosphere. We searched for those frequencies in the parameters of the near Earth solar plasma and the geomagnetic…

太阳与恒星天体物理 · 物理学 2016-11-11 Ch. Katsavrias , P. Preka-Papadema , X. Moussas

Magnetic flux generated within the solar interior emerges to the surface, forming active regions (ARs) and sunspots. Flux emergence may trigger explosive events, such as flares and coronal mass ejections and therefore understanding…

太阳与恒星天体物理 · 物理学 2020-11-04 Dattaraj B. Dhuri , Shravan M. Hanasoge , Aaron C. Birch , Hannah Schunker

Spatial variation in the intensity of magnetospheric and ionospheric fluctuation during solar storms creates ground-induced currents, of importance in both infrastructure engineering and geophysical science. This activity is currently…

This first paper in a series describes the design of a study testing whether pre-appearance signatures of solar magnetic active regions were detectable using various tools of local helioseismology. The ultimate goal is to understand…

太阳与恒星天体物理 · 物理学 2013-03-07 K. D. Leka , G. Barnes , A. C. Birch , I. Gonzalez-Hernandez , T. Dunn , B. Javornik , D. C. Braun

Solar wind properties are determined by the conditions of their solar source region and transport history. Solar wind parameters, such as proton speed, proton density, proton temperature, magnetic field strength, and the charge state…

太阳与恒星天体物理 · 物理学 2023-10-11 Maximilian Hecht , Verena Heidrich-Meisner , Lars Berger , Robert F. Wimmer-Schweingruber

We make use of the Parker Solar Probe (PSP) data to explore the nature of solar wind turbulence focusing on the Alfv\'enic character and power spectra of the fluctuations and their dependence on distance and context (i.e. large scale solar…

Intermittency in fluid turbulence can be emphasized through the analysis of Probability Distribution Functions (PDF) for velocity fluctuations, which display a strong non-gaussian behavior at small scales. Castaing et al. (1990) have…

等离子体物理 · 物理学 2015-06-26 Luca Sorriso-Valvo , Vincenzo Carbone , Pierluigi Veltri , Giuseppe Consolini , Roberto Bruno

Solar wind classification is conducive to understand the physical processes ongoing at the Sun and solar wind evolution in the interplanetary space, and furthermore, it is helpful for early warning of space weather events. With rapid…

空间物理 · 物理学 2019-08-26 Hui Li , Chi Wang , Cui Tu , Fei Xu

Accurate short-term solar and wind power predictions play an important role in the planning and operation of power systems. However, the short-term power prediction of renewable energy has always been considered a complex regression…

系统与控制 · 电气工程与系统科学 2022-02-08 Wenlong Liao , Birgitte Bak-Jensen , Jayakrishnan Radhakrishna Pillai , Zhe Yang , Kuangpu Liu

A regression modeling method of space weather prediction is proposed. It allows forecasting Dst index up to 6 hours ahead with about 90% correlation. It can also be used for constructing phenomenological models of interaction between the…

空间物理 · 物理学 2010-01-12 Aleksei Parnowski

We apply the finite size scaling technique to quantify the statistical properties of fluctuations in AU, AL and AE indices and in the epsilon parameter that represents energy input from the solar wind into the magnetosphere. We find that…

空间物理 · 物理学 2015-06-26 B. Hnat , S. C. Chapman , G. Rowlands , N. W. Watkins , M. P. Freeman

(Abridged) Wavelet analysis can be used to measure the power spectrum of solar wind fluctuations along a line in any direction with respect to the local mean magnetic field. This technique is applied to study solar wind turbulence in…

地球与行星天体物理 · 物理学 2011-02-11 J. J. Podesta