{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1362825895502524032.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2018rs006748"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2018RS006748"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1029/2018RS006748"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/full-xml/10.1029/2018RS006748"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/am-pdf/10.1029/2018RS006748"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2018RS006748"}}],"dc:title":[{"@value":"A Bottomside Parameterization for the Empirical Canadian High Arctic Ionospheric Model"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>In this study, we present a bottomside model representation to be used by the Empirical Canadian High Arctic Ionospheric Model (E‐CHAIM). This model features a new approach to modeling the bottomside electron density; namely, instead of modelling electron density directly, E‐CHAIM models the altitude profile of the scale thickness of a single bottomside layer. In this approach, the curvature in the bottomside associated with the <jats:italic>E</jats:italic> region and <jats:italic>F</jats:italic>1 layer is represented in the scale thickness domain as a peak function centered at the layer peak altitude. The use of this approach ensures the production of explicitly doubly differentiable bottomside electron density profiles and directly avoids issues known to exist within current standards, such as the International Reference Ionosphere (IRI), which has discontinuities in space, time, and in the vertical electron density gradient. In terms of performance, after removing the impacts of <jats:italic>hmF</jats:italic>2 and <jats:italic>NmF</jats:italic>2, the new E‐CHAIM profile function generally performs comparably to the IRI, with bottomside TEC from both models within 2.0 TECU (1 TECU = 10<jats:sup>16</jats:sup> e/m<jats:sup>3</jats:sup>) of observations. More specifically, the E‐CHAIM bottomside is demonstrated to outperform the IRI bottomside function in the <jats:italic>F</jats:italic> region during low solar activity periods with respect to incoherent scatter radar observations. At high latitudes, E‐CHAIM tends to outperform the IRI during winter months by between 10% and 40% of <jats:italic>NmF</jats:italic>2 while being outperformed by the IRI by between 10% and 25% of <jats:italic>NmF</jats:italic>2 during summer periods, mainly during the daytime at high solar activity.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382825895502524035","@type":"Researcher","foaf:name":[{"@value":"David R. Themens"}],"jpcoar:affiliationName":[{"@value":"Department of Physics University of New Brunswick  Fredericton New Brunswick Canada"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895502524033","@type":"Researcher","foaf:name":[{"@value":"P.T. Jayachandran"}],"jpcoar:affiliationName":[{"@value":"Department of Physics University of New Brunswick  Fredericton New Brunswick Canada"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895502524036","@type":"Researcher","foaf:name":[{"@value":"Anthony M. McCaffrey"}],"jpcoar:affiliationName":[{"@value":"Department of Physics University of New Brunswick  Fredericton New Brunswick Canada"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895502524032","@type":"Researcher","foaf:name":[{"@value":"Benjamin Reid"}],"jpcoar:affiliationName":[{"@value":"Department of Physics University of New Brunswick  Fredericton New Brunswick Canada"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895502524034","@type":"Researcher","foaf:name":[{"@value":"Roger H. Varney"}],"jpcoar:affiliationName":[{"@value":"SRI International  Menlo Park CA USA"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00486604"},{"@type":"EISSN","@value":"1944799X"}],"prism:publicationName":[{"@value":"Radio Science"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2019-05","prism:volume":"54","prism:number":"5","prism:startingPage":"397","prism:endingPage":"414"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#am","http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2018RS006748"},{"@id":"https://onlinelibrary.wiley.com/doi/pdf/10.1029/2018RS006748"},{"@id":"https://onlinelibrary.wiley.com/doi/full-xml/10.1029/2018RS006748"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/am-pdf/10.1029/2018RS006748"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2018RS006748"}],"createdAt":"2019-04-17","modifiedAt":"2023-09-11","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360302866854431360","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Review of Environmental Monitoring by Means of Radio Waves in the Polar Regions: From Atmosphere to Geospace"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433317026704640","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Comparison of SuperDARN peak electron density estimates based on elevation angle measurements to ionosonde and incoherent scatter radar measurements"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2018rs006748"},{"@type":"CROSSREF","@value":"10.1186/s40623-020-01170-w_references_DOI_C7Ktn649zPyxFzbE9P3XUGv5KTI"},{"@type":"CROSSREF","@value":"10.1007/s10712-022-09734-z_references_DOI_C7Ktn649zPyxFzbE9P3XUGv5KTI"}]}