Abstract:
This dataset contains data produced by two Gorgon Global magnetohydrodynamic (MHD) simulations with steady solar wind conditions interacting with the Earth's magnetosphere, as utilised in the study of Desai et al. (2021b). Further description of the Gorgon MHD model can be found at Mejnertsen et al., (2016,2018), Eggington et al., (2020) and Desai et al., (2021a). The data was produced on the Imperial College High Performance Computing Service (doi: 10.14469/hpc/2232).
Two MHD simulations are contained; one with northward Interplanetary Magnetic Field (IMF) conditions and one with southward (IMF) conditions. The northward IMF condition is run with a grid resolution of 0.25 earth radii (RE) and the southward IMF conditions is run three times for grid resolutions of 0.5, 0.25 and 0.125 RE.
The MHD equations were solved in the magnetosphere on a regular 3-D Cartesian grid, covering a domain of dimensions (-20,100) RE in X, (-40,40) RE in Y and (-40,40) RE in Z with an inner boundary at 3 RE. In this coordinate system the Sun lies in the negative X-direction, the Z axis is aligned to the dipole in the 0 degree tilt case (where positive tilt points the north magnetic pole towards the Sun), and Y completes the right-handed set.
Output data is timestamped in seconds and is defined at the centre of the grid cells. The simulation data corresponding to each shock are stored in separate directories 'NorthwardX' and 'SouthwardX' where X is the grid resolution in RE of: 0.5 for the northward case and 0.5, 0.25 and 0.125 for the southward case. The data are stored in hdf5 format.
The magnetospheric variables are stored in the files: 'Gorgon_[YYYYMMDD]_MS_params_[XXXXX]s.hdf5' where XXXXX is the simulation time in seconds. The magnetospheric data includes the magnetic field, ('Bvec_c') and Electric field, ('Evec'), after 2hrs of simulation. The data are of shape (240,160,160,3) where the first 3 dimensions are the grid indices in (X,Y,Z) indexed from negative to positive, and the final dimension is the cartesian vector component in (i,j,k).
Funding was provided by NERC Highlight grant to NE/P017347/1 (Rad-Sat).
Keywords:
Global-MHD, interplanetary shocks, magnetopause, magnetosphere, solar wind
Desai, R., Eastwood, J., & Chittenden, J. (2021). Two Gorgon Global-MHD simulations of steady solar wind conditions (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/005fe820-fea8-4749-a37b-add14efe6353
| Use Constraints: | Data supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
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| Creation Date: | 2021-07-26 |
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| Dataset Progress: | Planned |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | UK PDC |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Ravindra T Desai |
| Role(s) | Technical Contact, Investigator |
| Organisation | Imperial College London |
| Name | Jonathan Eastwood |
| Role(s) | Investigator |
| Organisation | Imperial College London |
| Name | Jeremy Chittenden |
| Role(s) | Investigator |
| Organisation | Imperial College London |
| Name | Joseph Eggington |
| Role(s) | Investigator |
| Organisation | Imperial College London |
| Name | Martin Archer |
| Role(s) | Investigator |
| Organisation | Imperial College London |
| Parent Dataset: | N/A |
| Quality: | Output data is timestamped in seconds and is defined at the centre of the grid cells. The simulation data corresponding to each shock are stored in separate directories 'NorthwardX' and 'SouthwardX' where X is the grid resolution in RE of: 0.5 for the northward case and 0.5, 0.25 and 0.125 for the southward case. The data are stored in hdf5 format. The magnetospheric variables are stored in the files: 'Gorgon_[YYYYMMDD]_MS_params_[XXXXX]s.hdf5' where XXXXX is the simulation time in seconds. The magnetospheric data includes the magnetic field, ('Bvec_c') and Electric field, ('Evec'), after 2hrs of simulation. The data are of shape (240,160,160,3) where the first 3 dimensions are the grid indices in (X,Y,Z) indexed from negative to positive, and the final dimension is the cartesian vector component in (i,j,k). |
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| Lineage: | The MHD equations were solved in the magnetosphere on a regular 3-D Cartesian grid, covering a domain of dimensions (-20,100) RE in X, (-40,40) RE in Y and (-40,40) RE in Z with an inner boundary at 3 RE. In this coordinate system the Sun lies in the negative X-direction, the Z axis is aligned to the dipole in the 0 degree tilt case (where positive tilt points the north magnetic pole towards the Sun), and Y completes the right-handed set. | |
| Location: | |
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| Location | Magnetosphere (other) |
| Detailed Location | N/A |