Watt, CEJ;
Rae, IJ;
Murphy, KR;
Anekallu, C;
Bentley, SN;
Forsyth, C;
(2017)
The parameterization of wave-particle interactions in the Outer Radiation Belt.
Journal of Geophysical Research: Space Physics
, 122
(9)
pp. 9545-9551.
10.1002/2017JA024339.
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Abstract
We explore the use of mean value empirical wave models in diffusion models of the Outer Radiation Belt. We show that magnetospheric wave power is not normally distributed in time and that geomagnetic activity does not provide a deterministic proxy for the temporal variability of wave activity. Our findings indicate that current diffusion models significantly overestimate the action of wave-particle interactions due to extremely low frequency and very low frequency waves in the magnetosphere. We suggest that other techniques such as stochastic parameterization will lead to a better characterization of subgrid diffusion physics in the Outer Radiation Belt.
| Type: | Article |
|---|---|
| Title: | The parameterization of wave-particle interactions in the Outer Radiation Belt |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/2017JA024339 |
| Publisher version: | http://doi.org/10.1002/2017JA024339 |
| Language: | English |
| Additional information: | ©2017. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Radiation belt modeling |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1572229 |
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