Development of a magnetospheric state-based trapped radiation database

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dc.contributor.authorFung, S.F.
dc.contributor.authorBell, E.V.
dc.contributor.authorTan, Lun C.
dc.contributor.authorCandey, R.M.
dc.contributor.authorGolightly, M.J.
dc.contributor.authorHuston, S.L.
dc.contributor.authorKing, J.H.
dc.contributor.authorMcGuire, R.E.
dc.date.accessioned2021-07-29T19:27:48Z
dc.date.available2021-07-29T19:27:48Z
dc.date.issued2005-07-05
dc.description.abstractAt the core of any empirical trapped radiation model is a database containing energetic particle observations. The usefulness of such a database and the performance of the resulting models depend on the database flexibility to respond to queries based on differing magnetospheric conditions, and the ability to locate, select, retrieve and analyze the relevant particle data. Current empirical trapped radiation models, such as the NASA AE-8 and AP-8 models, are essentially flux lookup tables on (E; B/B₀, L) grids based on processed data. Such lookup tables are inherently static, non-updateable, and non-extensible. Consequently, the models constructed from them would have limited performance. As an initial effort to construct a new generation of empirical trapped radiation models, a new magnetospheric state-based trapped radiation database is being constructed in order to overcome existing model limitations. We have adopted an object-oriented database design to accommodate the complex and dynamic space radiation environment. The technique encapsulates the particle data, ancillary data, and metadata into abstract objects in a common framework to handle heterogeneous data sources. The new database structure will allow users to query the database using combinations of geophysical, temporal and spatial parameters. In this paper, we will focus on the implementation issues that arise in integrating heterogeneous data sets. To mitigate against early obsolescence when updated or new data become available, the models’ underlying database must be updateable and extensible. In addition, to ensure high model performance, the database must be parameterizeable, so that the selection of data from the database for analysis or modeling can vary with magnetospheric conditions or states that vary with solar wind and IMF driving conditions and geomagnetic responses (see Fung, S. F. Recent development in the NASA trapped radiation models, in: Radiation Belts: Models and Standards, Geophys. Monogr. Ser., vol. 97, American Geophysical Union, Washington, DC, pp. 79–91, 1996). By following an object-oriented design, the new trapped-radiation database can be easily updated, extended and re-parameterized. Our effort in constructing a prototype particle radiation database will be applicable to the NASA Living With a Star Program.en_US
dc.description.urihttps://www.sciencedirect.com/science/article/pii/S0273117705004837#!en_US
dc.format.extent8 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2rcor-4w1a
dc.identifier.citationFung, S.F. et al.; Development of a magnetospheric state-based trapped radiation database; Advances in Space Research, Volume 36, Issue 10, Pages 1984-1991, 5 July, 2005; https://doi.org/10.1016/j.asr.2004.04.020en_US
dc.identifier.urihttps://doi.org/10.1016/j.asr.2004.04.020
dc.identifier.urihttp://hdl.handle.net/11603/22220
dc.language.isoen_USen_US
dc.publisherElsevieren_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Goddard Planetary Heliophysics Institute (GPHI)
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsPublic Domain Mark 1.0*
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleDevelopment of a magnetospheric state-based trapped radiation databaseen_US
dc.typeTexten_US

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