2ba39ec4-c89e-4091-bdf9-e40491ec92a5 eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2022-08-05 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 Electromagnetic ion cyclotron electron diffusion coefficients calculated using Van Allen Probe EMFISIS data for a range of ion compositions 2022-08-05 creation 2022-08-05 revision 2022-08-05 publication 2022-08-05 released 1.0 https://doi.org/10.5285/2ba39ec4-c89e-4091-bdf9-e40491ec92a5 doi GB/NERC/BAS/PDC/01654 https://data.bas.ac.uk/ NE/P01738X/1 award NE/R016038/1 award 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 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 No credit. completed Ross, Johnathan British Antarctic Survey Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Sun-earth Interactions > Solar Energetic Particle Flux > Electron Flux EARTH SCIENCE > Sun-earth Interactions > Ionosphere/Magnetosphere Dynamics EARTH SCIENCE > Sun-earth Interactions > Solar Energetic Particle Properties theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher EMIC Radiation belts electromagnetic ion cyclotron ultrarelativistic electrons wave-particle interactions theme 3.0 <= L* <= 5.5 Van Allen Radiation Belts place Atmospheric conditions theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions Data supplied under Open Government Licence v3.0 otherRestrictions None url url crossReference doi doi crossReference doi doi crossReference doi doi crossReference textTable eng utf8 climatologyMeteorologyAtmosphere -180.0 180.0 -90.0 90.0 2012-09-01 2019-10-31 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. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor application/x-hdf application/netcdf bytes 174285 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=2ba39ec4-c89e-4091-bdf9-e40491ec92a5 WWW:LINK-1.0-http--link Get Data Download data download bytes 174285 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=2ba39ec4-c89e-4091-bdf9-e40491ec92a5 WWW:LINK-1.0-http--link Get Data Download data download dataset 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). asNeeded completed