BGS Hosted Metadata
SWIGS: Gorgon Magnetohydrodyamic Code Simulation Data: Magnetospheric and Ionospheric Conditions under Southward IMF for 0-90 degree Dipole Tilts
This dataset contains data outputs generated using the Gorgon Magnetohydrodynamic (MHD) code, for simulations of the steady-state magnetosphere-ionosphere system during southward interplanetary magnetic field (IMF) with dipole tilt angles from 0-90 degrees. This data were collected as part of the NERC project Space Weather Impacts on Ground-based Systems (SWIGS).
The MHD equations were solved in the magnetosphere on a regular 3-D cartesian grid of resolution 0.5 RE (Earth radii), covering a domain of dimensions (-30,90) RE in X, (-40,40) RE in Y and (-40,40) RE in Z with an inner boundary at 4 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. The ionospheric variables were calculated on a separate 2-D spherical grid of dimensions 66x128 in latitude and longitude (with the north pole at 90 degrees latitude and the sun at 180 degrees longitude), coupled to the magnetospheric domain at the inner boundary.
Output data is timestamped in seconds and is defined at the centre of the grid cells. The simulation data corresponding to each dipole tilt are stored in separate directories 'XXdeg', e.g. in '00deg' for a 0 degree tilt angle. The data are stored in hdf5 format.
The magnetospheric variables are stored in the files 'Gorgon_[YYYYMMDD]_[XX]deg_MS_params_[XXXXX]s.hdf5' where XX is the tilt angle in degrees and XXXXX is the simulation time in seconds. The magnetospheric data includes the magnetic field ('Bvec_c'), plasma bulk velocity ('vvec') and electric current density ('jvec') after 4h of simulation, as well as the magnetic field and velocity in 5 minute intervals for the preceding 30 minutes. The dataset for each magnetospheric variable is 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 components in (i,j,k).
Similarly, the ionospheric data are stored as 'Gorgon_[YYYYMMDD]_[XX]deg_IS_params_[XXXXX]s.hdf5', containing the field-aligned current ('FAC') and electric potential ('phi') after 4h of simulation, as well as the potential in 5 minute intervals for the preceding 30 minutes. The dataset for each ionospheric variable is of shape (66, 128) where the first dimension is the grid index in colatitude, indexed from the north towards the south (i.e. 0 to 180 degrees), and the second dimension is the grid index in longitude, indexed from midnight towards noon via dawn (i.e. 0 to 360 degrees).
Simple
- Date (Publication)
- 2020-02-26T14:16:38
- Date (Creation)
- 2020-02-26T14:16:38
- Citation identifier
- https://catalogue.ceda.ac.uk/uuid/77d63a69e3554412a40c9a9ba564e3f9
- Citation identifier
- Centre for Environmental Data Analysis (CEDA) / 77d63a69e3554412a40c9a9ba564e3f9
- Citation identifier
- doi / 10.5285/77d63a69e3554412a40c9a9ba564e3f9
- Point of contact
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Organisation name Individual name Electronic mail address Role Unavailable
Eggington, Joseph
Unavailable
Author Unavailable
Eastwood, Jonathan
Unavailable
Author Unavailable
Mejnertsen, Lars
Unavailable
Author Unavailable
Desai, Ravindra
Unavailable
Author Unavailable
Chittenden, Jeremy
Unavailable
Author Centre for Environmental Data Analysis (CEDA)
Custodian Centre for Environmental Data Analysis (CEDA)
Distributor Unavailable
Eastwood, Jonathan
Unavailable
Principal investigator Centre for Environmental Data Analysis (CEDA)
pointofContact Centre for Environmental Data Analysis (CEDA)
Publisher
- Maintenance and update frequency
- Not planned
- Update scope
- Dataset
- Keywords
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SWIGS
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Space
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weather
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Gorgon Magnetohydrodyamic Code
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GEMET - INSPIRE themes, version 1.0
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atmospheric conditions
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- Access constraints
- Other restrictions
- Other constraints
- Access to these data is available to any registered CEDA user. Please Login or Register for a CEDA account to gain access.
- Use constraints
- Other restrictions
- Spatial representation type
- Grid
- Language
- English
- Topic category
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- Climatology, meteorology, atmosphere
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- Begin date
- 2020-01-29T00:00:00
- End date
- 2020-01-29T00:00:00
- Unique resource identifier
- WGS 84
- Distribution format
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Name Version Data are HDF5 formatted.
- Distributor contact
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Organisation name Individual name Electronic mail address Role Centre for Environmental Data Analysis (CEDA)
Distributor
- OnLine resource
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Protocol Linkage Name https://catalogue.ceda.ac.uk/uuid/77d63a69e3554412a40c9a9ba564e3f9 CEDA Data Catalogue Page
- OnLine resource
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Protocol Linkage Name http://data.ceda.ac.uk/badc/deposited2020/swigs/data/gorgon-dip-tilt/ DOWNLOAD
- Hierarchy level
- Dataset
Conformance result
- Title
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Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
- Date (Publication)
- 2010-12-08
- Statement
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Data collected by the project participants and sent to the Centre for Environmental Data Analysis (CEDA) for archiving.
Metadata
- File identifier
- 77d63a69e3554412a40c9a9ba564e3f9 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2026-03-11T03:21:14
- Metadata standard name
- UK GEMINI
- Metadata standard version
-
2.3
- Metadata author
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Organisation name Individual name Electronic mail address Role Centre for Environmental Data Analysis (CEDA)
Point of contact
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