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| Titel |
Reanalysis of Radiation Belt Electron Phase Space Density using the UCLA 1-D VERB code and Kalman filtering: Sensitivity to assumed boundary conditions and changes in the loss model |
| VerfasserIn |
M. Daae, Y. Y. Shprits, B. Ni, J. Koller, D. Kondrashov, Y. Chen |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250043425
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| Zusammenfassung |
| We present reanalysis of radiation belt electron phase space density using the VERB code and
a Kalman filter at higher L* than previously used. Simulations show that when setting up the
boundary at L* = 10, the heart of the outer radiation belt is negligibly affected for most of
the time. We analyze the sensitivity of the reanalysis to changes in the electron-loss
throughout the domain. In addition we examine the merits of including a boundary between
trapped an un-trapped electrons. We show that reanalysis can reproduce phase space
density and the dynamics in the heart of the outer radiation belt in a similar way for
different electron losses. Furthermore, peaks in the outer radiation belt are seen in all
the simulations presented in this study, supporting the idea that peaks develop in
the heart of the radiation belt as a consequence of local acceleration processes. |
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