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Electromagnetic ion cyclotron electron diffusion coefficients calculated using Van Allen Probe EMFISIS data for a range of ion compositions
The banded structure of Electromagnetic Ion Cyclotron (EMIC) wave spectra and their resonant interactions with radiation belt electrons depend on the cold ion composition. However, there is a great deal of uncertainty in the composition in the inner magnetosphere due to difficulties in direct flux measurements. Here we determine the sensitivity of electron diffusion by EMIC waves to the cold ion composition. The diffusion coefficients are calculated using collocated EMIC waves spectra and plasma densities observed by Van Allen Probe Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) data, parameterised by Dst, using quasi-linear theory implemented in the Pitch-Angle Diffusion of Ions and Electrons (PADIE) code.
Funding was provided by NERC Highlight Topic grant: NE/P01738X/1 (Rad-Sat), NERC grant: NE/V00249X/1 (Sat-Risk) and NERC grant: NE/R016038/1
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- Date (Creation)
- 2022-08-05
- Date (Revision)
- 2022-08-05
- Date (Publication)
- 2022-08-05
- Date (released)
- 2022-08-05
- Edition
- 1.0
- Unique resource identifier
- https://doi.org/10.5285/2ba39ec4-c89e-4091-bdf9-e40491ec92a5
- Codespace
- doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01654
- Codespace
- https://data.bas.ac.uk/
- Unique resource identifier
- NE/P01738X/1
- Codespace
- award
- Unique resource identifier
- NE/R016038/1
- Codespace
- award
- Other citation details
- Please cite this item as: Ross, J. (2022). Electromagnetic ion cyclotron electron diffusion coefficients calculated using Van Allen Probe EMFISIS data for a range of ion compositions (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/2ba39ec4-c89e-4091-bdf9-e40491ec92a5
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- No credit.
- Status
- completed Completed
https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
- Maintenance and update frequency
- asNeeded As needed
- Maintenance note
- completed Completed
- Theme
-
- EMIC
- Radiation belts
- electromagnetic ion cyclotron
- ultrarelativistic electrons
- wave-particle interactions
- Place
-
- 3.0 <= L* <= 5.5 Van Allen Radiation Belts
- GEMET - INSPIRE themes, version 1.0
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- Open Government Licence v3.0
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- Data supplied under Open Government Licence v3.0
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- Codespace
- doi
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- crossReference Cross reference
- Spatial representation type
- textTable Text, table
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Topic category
-
- Climatology, meteorology, atmosphere
))
- Begin date
- 2012-09-01
- End date
- 2019-10-31
- Supplemental Information
- It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.
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Methodology:
Data sources:
* OMNIWeb (https://omniweb.gsfc.nasa.gov) for the geomagnetic and solar wind indices.
* Van Allen Probes data the Level 3 and Level 4 EMFISIS magnetometer data obtained from http://emfisis.physics.uiowa.edu/data/index.
The wave data was processed in Ross et al. (2021) and the technique for calculating the diffusion coefficients is given in that paper.
Data collection:
Code: PADIE (Glauert, S. A., and Horne, R. B. (2005), Calculation of pitch angle and energy diffusion coefficients with the PADIE code, J. Geophys. Res., 110, A04206, doi:10.1029/2004JA010851.)
Data quality:
The wave data used in this paper was from Ross et al. (2021).
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- Date stamp
- 2022-08-05
- Metadata standard name
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- Metadata standard version
- ISO 19115:2003(E)
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