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dc.contributor.authorWeimer, D. R.en_US
dc.contributor.authorMlynczak, M. G.en_US
dc.contributor.authorHunt, L. A.en_US
dc.contributor.authorTobiska, W. K.en_US
dc.date.accessioned2017-03-03T17:18:10Z
dc.date.available2017-03-03T17:18:10Z
dc.date.issued2015-07-01en_US
dc.identifier.issn2169-9380en_US
dc.identifier.urihttp://hdl.handle.net/10919/75225
dc.description.abstractObtaining accurate predictions of the neutral density in the thermosphere has been a long-standing problem. During geomagnetic storms the auroral heating in the polar ionospheres quickly raises the temperature of the thermosphere, resulting in higher neutral densities that exert a greater drag force on objects in low Earth orbit. Rapid increases and decreases in the temperature and density may occur within a couple days. A key parameter in the thermosphere is the total amount of nitric oxide (NO). The production of NO is accelerated by the auroral heating, and since NO is an efficient radiator of thermal energy, higher concentrations of this molecule accelerate the rate at which the thermosphere cools. This paper describes an improved technique that calculates changes in the global temperature of the thermosphere. Starting from an empirical model of the Poynting flux into the ionosphere, a set of differential equations derives the minimum, global value of the exospheric temperature, which can be used in a neutral density model to calculate the global values. The relative variations in NO content are used to obtain more accurate cooling rates. Comparisons with the global rate of NO emissions that are measured with the Sounding of the Atmosphere using Broadband Emission Radiometry instrument show that there is very good agreement with the predicted values. The NO emissions correlate highly with the total auroral heating that has been integrated over time. We also show that the NO emissions are highly correlated with thermospheric temperature, as well as indices of solar extreme ultraviolet radiation.en
dc.format.extent5998 - 6009 (12) page(s)en_US
dc.languageEnglishen_US
dc.publisherAmer Geophysical Unionen_US
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000360381400056&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1en_US
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectAstronomy & Astrophysicsen_US
dc.subjectnitric oxideen_US
dc.subjectthermosphereen_US
dc.subjectneutral densityen_US
dc.subjectexosphereen_US
dc.subjecttemperatureen_US
dc.subjectIONOSPHERIC ELECTRODYNAMIC MODELSen_US
dc.subjectPOLAR-CAP INDEXen_US
dc.subjectTERRESTRIAL THERMOSPHEREen_US
dc.subjectSOLAR STORMSen_US
dc.subjectAPRIL 2002en_US
dc.subjectART.en_US
dc.subjectDENSITYen_US
dc.subjectENERGYen_US
dc.titleHigh correlations between temperature and nitric oxide in the thermosphereen_US
dc.typeArticle - Refereed
dc.description.versionPublished (Publication status)en_US
dc.rights.holderThe Author(s)en
dc.contributor.departmentElectrical and Computer Engineeringen_US
dc.contributor.departmentCenter for Space Science and Engineering Research (Space@VT)en_US
dc.title.serialJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICSen_US
dc.identifier.doihttps://doi.org/10.1002/2015JA021461
dc.identifier.volume120en_US
dc.identifier.issue7en_US
pubs.organisational-group/Virginia Tech
pubs.organisational-group/Virginia Tech/Engineering
pubs.organisational-group/Virginia Tech/Engineering/Electrical and Computer Engineering


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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
License: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International