A time dependent three‐dimensional simulation of the Earth's magnetosphere: Reconnection events

Brecht, S. H.; Lyon, J. G.; Fedder, J. A.; Hain, K.

doi:10.1029/ja087ia08p06098

Cited by 100 publications

(36 citation statements)

References 22 publications

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“…The very best available computers could sustain computational rates of tens of megaflops (as opposed to the present where sustained teraflop calculations are possible). The early 3D results by the NRL group Brecht et al (1982) could not cleanly resolve the the magnetosheath; the bowshock somewhat overlapped the magnetopause. While it was clear that computing power would increase in the future, the basic scaling laws involved in these calculations made rapid progress through computer power alone seem unlikely.…”

Section: Design Considerationsmentioning

confidence: 93%

The Lyon–Fedder–Mobarry (LFM) global MHD magnetospheric simulation code

Lyon¹,

Fedder²,

Mobarry³

2004

Journal of Atmospheric and Solar-Terrestrial Physics

488

498

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Section: Design Considerationsmentioning

confidence: 93%

The Lyon–Fedder–Mobarry (LFM) global MHD magnetospheric simulation code

Lyon¹,

Fedder²,

Mobarry³

2004

Journal of Atmospheric and Solar-Terrestrial Physics

488

498

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“…From the first global MHD simulation by Leboeuf et al (1978Leboeuf et al ( , 1981, through to the first real three-dimensional MHD models (Brecht et al, 1982;Ogino, 1986), to the codes in their present states (e.g. Janhunen, 1996;Powell et al, 1999;Raeder, 2003;Lyon et al, 2004) the models have developed and improved.…”

Section: Introductionmentioning

confidence: 99%

A general Cluster data and global MHD simulation comparison

et al. 2008

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Abstract. Among the many challenges facing the space weather modelling community today, is the need for validation and verification methods of the numerical models available describing the complex nonlinear Sun-Earth system. Magnetohydrodynamic (MHD) models represent the latest numerical models of this environment and have the unique ability to span the enormous distances present in the magnetosphere, from several hundred kilometres to several thousand kilometres above the Earth's surface. This makes it especially difficult to develop verification and validation methods which posses the same range spans as the models. In this paper we present a first general large-scale comparison between four years (2001)(2002)(2003)(2004) worth of in situ Cluster plasma observations and the corresponding simulated predictions from the coupled Block-Adaptive-Tree-SolarwindRoe-Upwind-Scheme (BATS-R-US) MHD code. The comparison between the in situ measurements and the model predictions reveals that by systematically constraining the MHD model inflow boundary conditions a good correlation between the in situ observations and the modeled data can be found. These results have an implication for modelling studies addressing also smaller scale features of the magnetosphere. The global MHD simulation can therefore be used to place localised satellite and/or ground-based observations into a global context and fill the gaps left by measurements.

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“…VisAn MHD comes with numerous functions (see Table 1 and add ons) which provide documentation and examples of how to access the model data, utilise the different tools to conduct detailed analysis and sophisticated visualisations of the model outputs. Obviously we cannot cover all these functions in great detail, so we have chosen to highlight the capability of the toolbox by showing one published (Daum and Wild, 2006) example of the 3-D large-scale representation of an flux-transfer-event (FTE; Russell and Elphic, 1979) using the BATS-R-US model (see Fig. 3).…”

Section: Software Infrastructurementioning

confidence: 99%

“…All models are based on the simultaneous combination of the Navier-Stokes equations of fluid dynamics and Maxwell's equations of electromagnetism. From the first global MHD simulation by Leboeuf et al (1978), through to the first real three-dimensional MHD models (Brecht et al, 1982;Ogino, 1986), to the codes in their present states the models have developed and improved so that they can now be used to span the enormous distances present in the magnetosphere to fill the gaps left by the point-to-point small-scale in situ measurements. The present MHD codes are capable of simulating the geospace from several hundred kilometers above the Earth surface (namely the ionosphere) to several hundred thousand kilometers (namely the magnetosphere) and beyond.…”

Section: Introductionmentioning

confidence: 99%

VisAn MHD: a toolbox in Matlab for MHD computer model data visualisation and analysis

Daum

2007

Ann. Geophys.

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Abstract. Among the many challenges facing modern space physics today is the need for a visualisation and analysis package which can examine the results from the diversity of numerical and empirical computer models as well as observational data. Magnetohydrodynamic (MHD) models represent the latest numerical models of the complex Earth's space environment and have the unique ability to span the enormous distances present in the magnetosphere from several hundred kilometres to several thousand kilometres above the Earth surface. This feature enables scientist to study complex structures of processes where otherwise only point measurements from satellites or ground-based instruments are available. Only by combining these observational data and the MHD simulations it is possible to enlarge the scope of the point-to-point observations and to fill the gaps left by measurements in order to get a full 3-D representation of the processes in our geospace environment. In this paper we introduce the VisAn MHD toolbox for Matlab as a tool for the visualisation and analysis of observational data and MHD simulations. We have created an easy to use tool which is capable of highly sophisticated visualisations and data analysis of the results from a diverse set of MHD models in combination with in situ measurements from satellites and groundbased instruments. The toolbox is being released under an open-source licensing agreement to facilitate and encourage community use and contribution.

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A time dependent three‐dimensional simulation of the Earth's magnetosphere: Reconnection events

Cited by 100 publications

References 22 publications

The Lyon–Fedder–Mobarry (LFM) global MHD magnetospheric simulation code

The Lyon–Fedder–Mobarry (LFM) global MHD magnetospheric simulation code

A general Cluster data and global MHD simulation comparison

VisAn MHD: a toolbox in Matlab for MHD computer model data visualisation and analysis

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