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| Titel |
Estimating the energy deposition based on anisotropic fluxes measured by POES MEPED |
| VerfasserIn |
Marit Irene Sandanger, Johan Stadsnes, Hilde Nesse Tyssøy, Linn-Kristine Glesnes Ødegaard, Arne Åsnes |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250110697
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| Publikation (Nr.) |
 EGU/EGU2015-10724.pdf |
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| Zusammenfassung |
| The Medium Energy Proton and Electron Detector (MEPED) onboard the Polar Orbiting
Operational Environmental Satellites (POES) consists of two electron telescopes, one
viewing nearly radially outward from Earth (the 0o detector) and the other viewing
antiparallel to the satellite’s velocity (the 90o detector). Energetic particle measurements from
POES are often used to estimate the energy deposition in the mesosphere. The electron fluxes
usually show strong pitch angle anisotropy. Until now, it has been customary to derive a lower
estimate of the energy deposition in the mesosphere from the 0o detector, while an upper
estimate is derived from the 90odetector. We have developed a method using measurements
from both the 0o and 90o telescopes in a combination with theoretically determined
pitch angle distributions, in order to give a more precise estimate of the energy
deposition in the upper atmosphere. The derived anisotropic flux distributions are used to
calculate the energy deposition during Relativistic Electron Precipitation (REP) events. |
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