A Comparison of IRI-2016 foF2 Predictions with the Observations at Different Latitudes During Geomagnetic Storms

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dc.authoridÜNAL, İbrahim/0000-0001-8497-4459
dc.contributor.authorTimocin, E.
dc.contributor.authorUnal, I.
dc.contributor.authorGoker, U. D.
dc.date.accessioned2024-09-11T19:52:02Z
dc.date.available2024-09-11T19:52:02Z
dc.date.issued2018
dc.departmentİstanbul Gelişim Üniversitesien_US
dc.description.abstractThis study investigates the impacts of geomagnetic storms on the performance of the International Reference Ionosphere 2016 (IRI-2016) foF2 predictions at different latitudes during geomagnetically disturbed periods in different seasons of the year 1989 which is around maximum solar activity. For this purpose, hourly foF2 data measured from the ionosonde stations Manila (14.7 degrees N, 121.1 degrees E), Rome (41.8 degrees N, 12.5 degrees E), Argentia NF (47.3 degrees N, 54.0 degrees W) and Uppsala (59.8 degrees N, 17.6 degrees E) that are located at low, middle and high latitudes, and hourly foF2 data calculated from the IRI-2016 for the same locations are used. In our study, a comparison between observational results and that of the IRI-2016 foF2 predictions is made. Planetary geomagnetic activity 3h-K-p and 3h-a(p) indices are used as geomagnetic activity indicators. In order to test the performance of the IRI-2016 for disturbed geomagnetic conditions, the percentile deviations and root mean square errors (RMSE) are calculated using the foF2 data from the IRI-2016 and the ionosonde stations. These analyzes are done for four seasons based on geomagnetic stormy days around equinoxes (March 21, September 23) and solstices (June 21, December 21). Therefore, it is found that during geomagnetically disturbed periods, the IRI-2016 foF2 predictions deviate considerably from the foF2 data taken from the ionosonde stations and this deviation differs according to the seasons and latitudes. The results show that the last version of the IRI model that includes the foF2 storm model is not sufficient to properly represent the real conditions of a disturbed ionosphere and there is still space for improving the IRI model for geomagnetically disturbed conditions.en_US
dc.identifier.doi10.1134/S0016793218070216
dc.identifier.endpage856en_US
dc.identifier.issn0016-7932
dc.identifier.issn1555-645X
dc.identifier.issue7en_US
dc.identifier.scopus2-s2.0-85060164529en_US
dc.identifier.startpage846en_US
dc.identifier.urihttps://doi.org/10.1134/S0016793218070216
dc.identifier.urihttps://hdl.handle.net/11363/7895
dc.identifier.volume58en_US
dc.identifier.wosWOS:000455617800003en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherMaik Nauka/Interperiodica/Springeren_US
dc.relation.ispartofGeomagnetism And Aeronomyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240903_Gen_US
dc.titleA Comparison of IRI-2016 foF2 Predictions with the Observations at Different Latitudes During Geomagnetic Stormsen_US
dc.typeArticleen_US

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