Outer Electron Belt Specification Model

Author

Bourdarie, S. ; Sicard-Piet, A. ; Friedel, R. ; Brien, T. P O ; Cayton, T. ; Blake, B. ; Boscher, D. ; Lazaro, D.

Author_Institution

Dept. Environnement Spatial, Office Nat. d´´Etudes et de Recherches Aerospatiales, Toulouse, France

Volume

56

Issue

4

fYear

2009

Firstpage

2251

Lastpage

2257

Abstract

Data assimilation techniques have already been developed and have shown to provide ldquothe bestrdquo estimate of the state of the electron radiation belts. Data assimilation proceeds in analysis cycles-in each analysis cycle, observations of the current (and possibly past) state of a system are combined with the results from a mathematical model (the forecast) to produce an analysis, which is considered as the best estimate of the current state of the system. In this paper, such an analysis has been performed from January 1990 to December 2006 and has produced full electron radiation belt state every 20 min. Then, based on this 17 year run, a new outer electron belt specification model is developed: we perform a data synthesis to deduce a yearly average electron belt state over a full solar cycle. Lastly, this new specification model for the Earth´s radiation belt is compared to existing specification models.

Keywords

data assimilation; radiation belts; AD 1990 01 to 2006 12; Earth radiation belt; data assimilation techniques; data synthesis; electron radiation belts; full solar cycle; outer electron belt specification model; Belts; Data assimilation; Electrons; Humans; Mathematical model; Performance analysis; Positron emission tomography; Protons; Space vehicles; State estimation; Space radiation environments; space radiation models;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2009.2014844

Filename

5204571