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Comparisons of IRI model and electron density data for the sub-equatorial station, Natal

2003· article· en· 0 citations· W7018023811 on OpenAlex

Why is this work in the frame?

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

About CanadaIts subject is Canada, wherever its authors sit.

No Canadian affiliation. An affiliation-only frame — the usual design — would never have seen this work. It is one of the works that make the case for inverting the frame.

The three-model screen

all 1,000 screened works →

All three models called this out of scope.

stratum: about_only · design weight: 3321.24 (the sample is stratified; any rate computed without the weight is wrong)
Claude Opus 4.8OUT
genre: empirical
about Canada: no
confidence: high

Space physics comparison of ionospheric model predictions with electron density observations.

GPT-5.6 (high)OUT
genre: empirical
about Canada: no
confidence: high

It compares ionospheric observations with a scientific model, not research practice.

Grok 4.5OUT
genre: empirical
about Canada: no
confidence: high

Ionospheric model-data comparison at Natal; geophysics, not scholarly research as object.

Abstract

Database from CADI (Canadian Digital Ionosonde) recorded at Natal (5.2degrees S, 36degrees W) near solar maximum are used to compare with the International Reference Ionosphere (IRI) predictions. Such comparison is done using vertical profiles of electron density and F region peak parameters, the maximum electron density (NmF2) and its corresponding height (HmF2), for geomagnetically quiet and disturbed conditions. The mean behavior of the observed vertical electron density profiles at 0300, 0900, 1500 and 2100 UT (UT = LT + 2.4 hr) for quiet and disturbed periods was compared with IRI profiles. Generally, good agreement between the two sets is noted, but IRI underestimates the heights of the bottomside F region at 0900 and 2100 UT. Also, discrepancies are found between the observed values of NmF2 and HmF2 and those obtained from IRI using URSI coefficients during evening-nighttime period.

Stored with the screening record, where it is evidence for the labels above.

The record

Venue
Biblioteca Digital da Memória Científica do INPE (National Institute for Space Research)
Topic
Ionosphere and magnetosphere dynamics
Field
Physics and Astronomy
Canadian institutions
Funders
Keywords
Electron densityQUIETIonosphereInternational Reference IonosphereIonospheric soundingElectronElectron precipitation
Has abstract in OpenAlex
yes