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dc.contributor.author Hysell, D. L.
dc.contributor.author Milla, Marco
dc.contributor.author Rodrigues, F. S.
dc.contributor.author Varney, R. H.
dc.contributor.author Huba, J. D.
dc.date.accessioned 2018-07-24T14:42:29Z
dc.date.available 2018-07-24T14:42:29Z
dc.date.issued 2015-12
dc.identifier.citation Hysell, D. L., Milla, M., Rodrigues, F. S., Varney, R. H., & Huba, J. D. (2015). Topside equatorial ionospheric density, temperature, and composition under equinox, low solar-flux conditions.==$Journal of Geophysical Research: Space Physics, 120$==(5), 3899-3912. https://doi.org/10.1002/2015JA021168 es_ES
dc.identifier.govdoc index-oti2018
dc.identifier.uri http://hdl.handle.net/20.500.12816/2060
dc.description.abstract We present observations of the topside ionosphere made at the Jicamarca Radio Observatory in March and September 2013, made using a full-profile analysis approach. Recent updates to the methodology employed at Jicamarca are also described. Measurements of plasma number density, electron and ion temperatures, and hydrogen and helium ion fractions up to 1500 km altitude are presented for 3 days in March and September. The main features of the observations include a sawtooth-like diurnal variation in ht, the transition height where the O+ ion fraction falls to 50%, the appearance of weak He+ layers just below ht, and a dramatic increase in plasma temperature at dawn followed by a sharp temperature depression around local noon. These features are consistent from day to day and between March and September. Coupled Ion Neutral Dynamics Investigation data from the Communication Navigation Outage Forecast System satellite are used to help validate the March Jicamarca data. The SAMI2-PE model was able to recover many of the features of the topside observations, including the morphology of the plasma density profiles and the light-ion composition. The model, forced using convection speeds and meridional thermospheric winds based on climatological averages, did not reproduce the extreme temperature changes in the topside between sunrise and noon. Some possible causes of the discrepancies are discussed. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:2169-9380
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Topside ionosphere es_ES
dc.subject Incoherent scatter es_ES
dc.subject CINDI es_ES
dc.subject SAMI2 es_ES
dc.title Topside equatorial ionospheric density, temperature, and composition under equinox, low solar-flux conditions es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.01 es_ES
dc.identifier.journal Journal of Geophysical Research: Space Physics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1002/2015JA021168 es_ES

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