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dc.contributor.authorOlivares Pulido, Germán
dc.contributor.authorHernández Pajares, Manuel
dc.contributor.authorAragón Ángel, Maria Angeles
dc.contributor.authorGarcía Rigo, Alberto
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtiques
dc.date.accessioned2017-03-07T06:46:07Z
dc.date.available2017-08-31T00:30:33Z
dc.date.issued2016-05
dc.identifier.citationOlivares-Pulido, G., Hernandez, M., Aragon-Angel, M.A., Garcia-Rigo, A. A linear scale height Chapman model supported by GNSS occultation measurements. A: "Journal of geophysical research: space physics". 2016, p. 7932-7940.
dc.identifier.issn2169-9380
dc.identifier.urihttp://hdl.handle.net/2117/101996
dc.descriptionThis is the accepted version of the following article: Olivares-Pulido, G., Hernandez, M., Aragon-Angel, M.A., Garcia-Rigo, A. A linear scale height Chapman model supported by GNSS occultation measurements. A: "Journal of geophysical research: space physics". 2016, p. 7932-7940, which has been published in final form at Doi: 10.1002/2016JA022337
dc.description.abstractGlobal Navigation Satellite Systems (GNSS) radio occultations allow the vertical sounding of the Earth's atmosphere, in particular, the ionosphere. The physical observables estimated with this technique permit to test theoretical models of the electron density such as, for example, the Chapman and the Vary-Chap models. The former is characterized by a constant scale height, whereas the latter considers a more general function of the scale height with respect to height. We propose to investigate the feasibility of the Vary-Chap model where the scale height varies linearly with respect to height. In order to test this hypothesis, the scale height data provided by radio occultations from a receiver on board a low Earth orbit (LEO) satellite, obtained by iterating with a local Chapman model at every point of the topside F2 layer provided by the GNSS satellite occultation, are fitted to height data by means of a linear least squares fit (LLS). Results, based on FORMOSAT-3/COSMIC GPS occultation data inverted by means of the Improved Abel transform inversion technique (which takes into account the horizontal electron content gradients) show that the scale height presents a more clear linear trend above the F2 layer peak height, hm, which is in good agreement with the expected linear temperature dependence. Moreover, the parameters of the linear fit obtained during four representative days for all seasons, depend significantly on local time and latitude, strongly suggesting that this approach can significantly contribute to build realistic models of the electron density directly derived from GNSS occultation data.
dc.format.extent9 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física::Astronomia i astrofísica::Radioastronomia
dc.subject.lcshAstronomy and astrophysics
dc.subject.otherionosphere modeling
dc.subject.otherradio occultation
dc.subject.otherGPS
dc.titleA linear scale height Chapman model supported by GNSS occultation measurements
dc.typeConference lecture
dc.subject.lemacAstronomia
dc.contributor.groupUniversitat Politècnica de Catalunya. IonSAT - Grup de determinació Ionosfèrica i navegació per SAtèl·lit i sistemes Terrestres
dc.identifier.doi10.1002/2016JA022337
dc.description.peerreviewedPeer Reviewed
dc.subject.amsClassificació AMS::85 Astronomy and astrophysics
dc.relation.publisherversionhttp://onlinelibrary.wiley.com/doi/10.1002/2016JA022337/abstract
dc.rights.accessOpen Access
local.identifier.drac19701363
dc.description.versionPostprint (author's final draft)
dc.audience.degreeThis is the peer reviewed version of the following article: Olivares-Pulido, G., Hernandez, M., Aragon-Angel, M.A., Garcia-Rigo, A. A linear scale height Chapman model supported by GNSS occultation measurements. A: "Journal of geophysical research: space physics". 2016, p. 7932-7940, which has been published in final form at DOI: 10.1002/2016JA022337. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
local.citation.authorOlivares-Pulido, G.; Hernandez, M.; Aragon-Angel, M.A.; Garcia-Rigo, A.
local.citation.publicationNameJournal of geophysical research: space physics
local.citation.volume121
local.citation.number8
local.citation.startingPage7932
local.citation.endingPage7940


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