Performance evaluation of GIM‐TEC assimilation of the IRI‐Plas model at two equatorial stations in the American sector

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dc.contributor.authorAdebiyi, S. J.
dc.contributor.authorAdebesin, B. O.
dc.contributor.authorIkubanni, S. O.
dc.contributor.authorJoshua, B. W.
dc.date.accessioned2018-11-21T18:32:57Z
dc.date.available2018-11-21T18:32:57Z
dc.date.issued2017-05-15
dc.description.abstractEmpirical models of the ionosphere, such as the International Reference Ionosphere (IRI) model, play a vital role in evaluating the environmental effect on the operation of space‐based communication and navigation technologies. The IRI extended to Plasmasphere (IRI‐Plas) model can be adjusted with external data to update its electron density profile while still maintaining the overall integrity of the model representations. In this paper, the performance of the total electron content (TEC) assimilation option of the IRI‐Plas at two equatorial stations, Jicamarca, Peru (geographic: 12°S, 77°W, dip angle 0.8°) and Cachoeira Paulista, Brazil (Geographic: 22.7°S, 45°W, dip angle −26°), is examined during quiet and disturbed conditions. TEC, F2 layer critical frequency (foF2), and peak height (hmF2) predicted when the model is operated without external input were used as a baseline in our model evaluation. Results indicate that TEC predicted by the assimilation option generally produced smaller estimation errors compared to the “no extra input” option during quiet and disturbed conditions. Generally, the error is smaller at the equatorial trough than near the crest for both quiet and disturbed days. With assimilation option, there is a substantial improvement of storm time estimations when compared with quiet time predictions. The improvement is, however, independent on storm's severity. Furthermore, the modeled foF2 and hmF2 are generally poor with TEC assimilation, particularly the hmF2 prediction, at the two locations during both quiet and disturbed conditions. Consequently, IRI‐Plas model assimilated with TEC value only may not be sufficient where more realistic instantaneous values of peak parameters are required.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationAdebiyi, S. J., Adebesin, B. O., Ikubanni, S. O., & Joshua, B. W. (2017). Performance evaluation of GIM‐TEC assimilation of the IRI‐Plas model at two equatorial stations in the American sector.==$Space Weather, 15$==(5), 726-736. https://doi.org/10.1002/2017SW001596es_ES
dc.identifier.doihttps://doi.org/10.1002/2017SW001596es_ES
dc.identifier.journalSpace Weatheres_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/3786
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Uniones_ES
dc.relation.ispartofurn:issn:1542-7390
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectIRI‐Plas modeles_ES
dc.subjectTEC assimilationes_ES
dc.subjectfoF2es_ES
dc.subjecthmF2es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titlePerformance evaluation of GIM‐TEC assimilation of the IRI‐Plas model at two equatorial stations in the American sectores_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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